24 Hour Summary, based on data provided by Environment Agency
Here you can view the detailed data behind the latest measurement summary displayed on UK-AIR, and also a summary of information that has been displayed over the previous 24 hours. The detailed data tabulated below are from monitoring sites within the AURN. Graphs of hourly monitoring data are also available to view as weekly time series. You can also subscribe to this information as an email alert.
- View the legend
- Maximum pollutant levels displayed on UK-AIR for the 24 hour period up to midday Sat 2nd May 2026
A
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Aberdeen Erroll Park Timeseries Graph |
83 (3 Low) | 21 (1 Low) | n/m | 8 (1 Low) | 22 (2 Low) *2 | 02/05/2026 01:00:00 |
| Aberdeen Wellington Road Timeseries Graph |
n/m | 38 (1 Low) | n/m | n/m | n/m | 01/05/2026 19:00:00 |
| Armagh Roadside Timeseries Graph |
n/m | 42 (1 Low) | n/m | n/m | 26 (2 Low) *1 | 01/05/2026 15:00:00 |
| Aston Hill Timeseries Graph |
87 (3 Low) | 8 (1 Low) | n/m | n/m | n/m | 02/05/2026 12:00:00 |
| Auchencorth Moss Timeseries Graph |
78 (3 Low) | n/m | n/m | 9 (1 Low) | 15 (1 Low) *2 | 02/05/2026 12:00:00 |
| Aylesbury A4157 Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | n/m | 02/05/2026 11:00:00 |
B
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Ballymena Antrim Road Timeseries Graph |
n/m | 26 (1 Low) | n/m | n/m | n/m | 01/05/2026 22:00:00 |
| Ballymena Ballykeel Timeseries Graph |
n/m | 25 (1 Low) | 5 (1 Low) | n/m | n/m | 01/05/2026 14:15:00 |
| Barnsley Gawber Timeseries Graph |
104 (4 Moderate) | 15 (1 Low) | 4 (1 Low) | 12 (2 Low) | 28 (2 Low) *2 | 01/05/2026 20:15:00 |
| Barnstaple A39 Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 17 (2 Low) *2 | 02/05/2026 12:00:00 |
| Bath A4 Roadside Timeseries Graph |
n/m | n/a | n/m | n/m | n/m | 22/03/2026 17:00:00 |
| Belfast Centre Timeseries Graph |
84 (3 Low) | 27 (1 Low) | 2 (1 Low) | 17 (2 Low) | 28 (2 Low) *2 | 01/05/2026 12:15:00 |
| Belfast Stockman's Lane Timeseries Graph |
n/m | 58 (1 Low) | n/m | n/m | 35 (3 Low) *1 | 01/05/2026 16:00:00 |
| Birkenhead Borough Road Timeseries Graph |
n/m | 25 (1 Low) | n/m | 13 (2 Low) | n/m | 02/05/2026 01:00:00 |
| Birmingham A4540 Roadside Timeseries Graph |
84 (3 Low) | 35 (1 Low) | n/m | 12 (2 Low) | 29 (2 Low) *2 | 02/05/2026 12:00:00 |
| Birmingham Hall Green Timeseries Graph |
106 (4 Moderate) | 16 (1 Low) | n/m | 11 (1 Low) | 26 (2 Low) *2 | 02/05/2026 11:00:00 |
| Birmingham Ladywood Timeseries Graph |
69 (3 Low) | 18 (1 Low) | 2 (1 Low) | 11 (1 Low) | 24 (2 Low) *2 | 01/05/2026 13:00:00 |
| Birmingham University Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 23 (2 Low) *2 | 02/05/2026 12:00:00 |
| Blackburn Accrington Road Timeseries Graph |
n/m | 31 (1 Low) | n/m | n/m | n/m | 01/05/2026 19:00:00 |
| Blackburn Audley Park Timeseries Graph |
85 (3 Low) | n/m | n/m | 13 (2 Low) | 23 (2 Low) *2 | 02/05/2026 06:00:00 |
| Blackpool Marton Timeseries Graph |
82 (3 Low) | 29 (1 Low) | n/m | 13 (2 Low) | 24 (2 Low) *2 | 02/05/2026 03:00:00 |
| Blackpool Whitegate Drive Timeseries Graph |
n/m | n/m | n/m | 14 (2 Low) | n/m | 02/05/2026 03:00:00 |
| Borehamwood Meadow Park Timeseries Graph |
n/m | 21 (1 Low) | n/m | 12 (2 Low) | 21 (2 Low) *2 | 02/05/2026 12:00:00 |
| Bournemouth Timeseries Graph |
100 (3 Low) | 11 (1 Low) | n/m | 14 (2 Low) | n/m | 02/05/2026 12:00:00 |
| Bradford Mayo Avenue Timeseries Graph |
n/m | 49 (1 Low) | n/m | n/m | n/m | 01/05/2026 17:00:00 |
| Bradford Shipley Airedale Road Timeseries Graph |
n/m | n/m | n/m | 14 (2 Low) | 39 (3 Low) *2 | 02/05/2026 01:00:00 |
| Brighton Preston Park Timeseries Graph |
86 (3 Low) | 23 (1 Low) | n/m | 13 (2 Low) | 19 (2 Low) *2 | 02/05/2026 12:00:00 |
| Bristol Patchway Timeseries Graph |
n/m | n/m | n/m | 12 (2 Low) | 21 (2 Low) *2 | 02/05/2026 08:00:00 |
| Bristol St Paul's Timeseries Graph |
84 (3 Low) | 56 (1 Low) | n/m | 12 (2 Low) | 25 (2 Low) *1 | 02/05/2026 10:00:00 |
| Bristol Temple Way Timeseries Graph |
n/m | 54 (1 Low) | n/m | 11 (1 Low) | 21 (2 Low) *2 | 02/05/2026 11:00:00 |
| Burton-on-Trent Horninglow Timeseries Graph |
107 (4 Moderate) | 31 (1 Low) | n/m | 12 (2 Low) | 25 (2 Low) *2 | 02/05/2026 01:00:00 |
| Bury Whitefield Roadside Timeseries Graph |
n/m | 23 (1 Low) | n/m | n/m | 34 (3 Low) *1 | 01/05/2026 16:00:00 |
| Bush Estate Timeseries Graph |
83 (3 Low) | 20 (1 Low) | n/m | n/m | n/m | 02/05/2026 02:00:00 |
C
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Cambridge King's Hedges Timeseries Graph |
n/m | n/m | n/m | 12 (2 Low) | 23 (2 Low) *2 | 02/05/2026 11:00:00 |
| Cambridge Roadside Timeseries Graph |
n/m | 46 (1 Low) | n/m | n/m | n/m | 01/05/2026 17:00:00 |
| Camden Kerbside Timeseries Graph |
n/m | 40 (1 Low) | n/m | 14 (2 Low) | 32 (2 Low) *1 | 02/05/2026 12:00:00 |
| Cannock A5190 Roadside Timeseries Graph |
n/m | 20 (1 Low) | n/m | 14 (2 Low) | n/m | 02/05/2026 11:00:00 |
| Cardiff Centre Timeseries Graph |
105 (4 Moderate) | 30 (1 Low) | 3 (1 Low) | 10 (1 Low) | 26 (2 Low) *1 | 30/04/2026 15:15:00 |
| Cardiff Newport Road Timeseries Graph |
n/m | 30 (1 Low) | n/m | n/m | 24 (2 Low) *1 | 02/05/2026 10:00:00 |
| Carlisle Morton A595 Timeseries Graph |
n/m | 25 (1 Low) | n/m | 12 (2 Low) | 25 (2 Low) *1 | 02/05/2026 07:00:00 |
| Charlton Mackrell Timeseries Graph |
92 (3 Low) | 11 (1 Low) | n/m | 11 (1 Low) | 17 (2 Low) *2 | 02/05/2026 11:00:00 |
| Chatham Roadside Timeseries Graph |
n/m | 21 (1 Low) | n/m | 9 (1 Low) | 28 (2 Low) *1 | 02/05/2026 12:00:00 |
| Cheltenham A40 Gloucester Road Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | n/m | 02/05/2026 10:00:00 |
| Chepstow A48 Timeseries Graph |
n/m | 50 (1 Low) | n/m | 14 (2 Low) | 25 (2 Low) *1 | 02/05/2026 03:00:00 |
| Chesterfield Loundsley Green Timeseries Graph |
107 (4 Moderate) | 18 (1 Low) | n/m | 13 (2 Low) | 24 (2 Low) *2 | 02/05/2026 12:00:00 |
| Chesterfield Roadside Timeseries Graph |
n/m | 29 (1 Low) | n/m | 14 (2 Low) | 27 (2 Low) *2 | 02/05/2026 12:00:00 |
| Chilbolton Observatory Timeseries Graph |
100 (3 Low) | 12 (1 Low) | 3 (1 Low) | 11 (1 Low) | 19 (2 Low) *2 | 01/05/2026 13:30:00 |
| Christchurch Barrack Road Timeseries Graph |
n/m | 15 (1 Low) | n/m | 12 (2 Low) | n/m | 02/05/2026 12:00:00 |
| Coventry Allesley Timeseries Graph |
99 (3 Low) | 11 (1 Low) | n/m | 11 (1 Low) | 23 (2 Low) *2 | 02/05/2026 12:00:00 |
| Coventry Binley Road Timeseries Graph |
n/m | 41 (1 Low) | n/m | 11 (1 Low) | 24 (2 Low) *2 | 02/05/2026 12:00:00 |
| Crewe Coppenhall Timeseries Graph |
86 (3 Low) | 22 (1 Low) | n/m | 14 (2 Low) | 27 (2 Low) *2 | 02/05/2026 04:00:00 |
| Cwmbran Crownbridge Timeseries Graph |
87 (3 Low) | 25 (1 Low) | n/m | n/m | n/m | 01/05/2026 22:00:00 |
D
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Darlington Firthmoor Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 21 (2 Low) *2 | 02/05/2026 01:00:00 |
| Derby St Alkmund's Way Timeseries Graph |
n/m | 48 (1 Low) | n/m | 14 (2 Low) | n/m | 02/05/2026 12:00:00 |
| Derby Stockbrook Park Timeseries Graph |
102 (4 Moderate) | n/m | n/m | 12 (2 Low) | 26 (2 Low) *2 | 02/05/2026 06:00:00 |
| Derry Rosemount Timeseries Graph |
86 (3 Low) | 13 (1 Low) | 2 (1 Low) | 8 (1 Low) | 23 (2 Low) *1 | 02/05/2026 01:45:00 |
| Dewsbury Ashworth Grange Timeseries Graph |
91 (3 Low) | 16 (1 Low) | n/m | 13 (2 Low) | 28 (2 Low) *2 | 02/05/2026 01:00:00 |
| Doncaster A630 Cleveland Street Timeseries Graph |
n/m | 39 (1 Low) | n/m | 12 (2 Low) | n/m | 02/05/2026 07:00:00 |
| Dumbarton Roadside Timeseries Graph |
n/m | 19 (1 Low) | n/m | n/m | n/m | 01/05/2026 17:00:00 |
| Dumfries Timeseries Graph |
n/m | 38 (1 Low) | n/m | n/m | n/m | 01/05/2026 13:00:00 |
| Dundee Mains Loan Timeseries Graph |
n/m | 29 (1 Low) | n/m | n/m | n/m | 01/05/2026 16:00:00 |
E
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Ealing Horn Lane Timeseries Graph |
n/m | n/m | n/m | n/m | 43 (3 Low) *1 | 02/05/2026 11:00:00 |
| Eastbourne Timeseries Graph |
87 (3 Low) | 10 (1 Low) | n/m | 11 (1 Low) | 18 (2 Low) *2 | 02/05/2026 12:00:00 |
| Edinburgh Nicolson Street Timeseries Graph |
n/m | 59 (1 Low) | n/m | n/m | n/m | 01/05/2026 19:00:00 |
| Edinburgh St Leonards Timeseries Graph |
80 (3 Low) | 28 (1 Low) | 3 (1 Low) | 10 (1 Low) | 18 (2 Low) *2 | 01/05/2026 12:15:00 |
| Eskdalemuir Timeseries Graph |
102 (4 Moderate) | 6 (1 Low) | n/m | n/m | n/m | 01/05/2026 17:00:00 |
| Exeter Roadside Timeseries Graph |
76 (3 Low) | 38 (1 Low) | n/m | n/m | n/m | 01/05/2026 24:00: |
F
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Farnborough Cherrywood Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 17 (2 Low) *2 | 02/05/2026 11:00:00 |
| Fort William Timeseries Graph |
98 (3 Low) | 30 (1 Low) | n/m | n/m | n/m | 02/05/2026 04:00:00 |
G
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Glasgow Great Western Road Timeseries Graph |
n/m | 36 (1 Low) | n/m | n/m | n/m | 01/05/2026 17:00:00 |
| Glasgow High Street Timeseries Graph |
n/m | 31 (1 Low) | n/m | 14 (2 Low) | 26 (2 Low) *2 | 02/05/2026 12:00:00 |
| Glasgow Kerbside Timeseries Graph |
n/m | 77 (2 Low) | n/m | n/m | n/m | 01/05/2026 24:00: |
| Glasgow Townhead Timeseries Graph |
87 (3 Low) | 37 (1 Low) | n/m | 12 (2 Low) | 22 (2 Low) *2 | 02/05/2026 12:00:00 |
| Glazebury Timeseries Graph |
90 (3 Low) | 25 (1 Low) | n/m | 13 (2 Low) | 24 (2 Low) *2 | 02/05/2026 06:00:00 |
| Gloucester Tredworth Timeseries Graph |
n/m | n/m | n/m | 15 (2 Low) | 25 (2 Low) *2 | 02/05/2026 11:00:00 |
| Grangemouth Timeseries Graph |
n/m | 34 (1 Low) | 5 (1 Low) | 11 (1 Low) | 21 (2 Low) *1 | 01/05/2026 13:15:00 |
| Grangemouth Moray Timeseries Graph |
n/m | 35 (1 Low) | n/m | n/m | n/m | 01/05/2026 16:00:00 |
| Greenock A8 Roadside Timeseries Graph |
n/m | 42 (1 Low) | n/m | 11 (1 Low) | 21 (2 Low) *2 | 02/05/2026 12:00:00 |
H
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Hafod-yr-ynys Hill Roadside Timeseries Graph |
n/m | 57 (1 Low) | n/m | n/m | n/m | 01/05/2026 21:00:00 |
| Haringey Roadside Timeseries Graph |
n/m | 32 (1 Low) | n/m | n/m | n/m | 01/05/2026 13:00:00 |
| Harrogate Woodlands Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 23 (2 Low) *2 | 02/05/2026 05:00:00 |
| Hartlepool St Abbs Walk Timeseries Graph |
91 (3 Low) | 29 (1 Low) | n/m | 13 (2 Low) | 31 (2 Low) *2 | 02/05/2026 01:00:00 |
| High Muffles Timeseries Graph |
106 (4 Moderate) | 7 (1 Low) | n/m | 8 (1 Low) | 23 (2 Low) *2 | 02/05/2026 02:00:00 |
| Honiton Timeseries Graph |
90 (3 Low) | 13 (1 Low) | n/m | 11 (1 Low) | 19 (2 Low) *2 | 02/05/2026 11:00:00 |
| Horley Timeseries Graph |
n/m | 29 (1 Low) | n/m | 14 (2 Low) | 21 (2 Low) *2 | 02/05/2026 12:00:00 |
| Hull Freetown Timeseries Graph |
94 (3 Low) | 41 (1 Low) | 2 (1 Low) | 12 (2 Low) | 28 (2 Low) *2 | 01/05/2026 15:15:00 |
| Hull Holderness Road Timeseries Graph |
n/m | 55 (1 Low) | n/m | 10 (1 Low) | 22 (2 Low) *2 | 02/05/2026 07:00:00 |
I
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Immingham Woodlands Avenue Timeseries Graph |
95 (3 Low) | 23 (1 Low) | n/m | 12 (2 Low) | 26 (2 Low) *2 | 02/05/2026 12:00:00 |
| Inverness Timeseries Graph |
n/m | 25 (1 Low) | n/m | 6 (1 Low) | 15 (1 Low) *2 | 02/05/2026 12:00:00 |
K
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Kielder Water Timeseries Graph |
96 (3 Low) | n/m | n/m | 9 (1 Low) | 15 (1 Low) *2 | 02/05/2026 12:00:00 |
L
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Ladybower Timeseries Graph |
118 (4 Moderate) | 14 (1 Low) | 6 (1 Low) | 18 (2 Low) | 28 (2 Low) *2 | 01/05/2026 14:00:00 |
| Leamington Spa Timeseries Graph |
103 (4 Moderate) | 22 (1 Low) | n/m | 12 (2 Low) | 22 (2 Low) *2 | 02/05/2026 12:00:00 |
| Leamington Spa Rugby Road Timeseries Graph |
n/m | 17 (1 Low) | n/m | 12 (2 Low) | 19 (2 Low) *2 | 02/05/2026 12:00:00 |
| Leeds Centre Timeseries Graph |
92 (3 Low) | 30 (1 Low) | 5 (1 Low) | 14 (2 Low) | 30 (2 Low) *2 | 01/05/2026 14:45:00 |
| Leeds Headingley Kerbside Timeseries Graph |
n/m | 34 (1 Low) | n/m | 17 (2 Low) | 35 (3 Low) *1 | 02/05/2026 06:00:00 |
| Leicester A594 Roadside Timeseries Graph |
n/m | 54 (1 Low) | n/m | 13 (2 Low) | 27 (2 Low) *2 | 02/05/2026 12:00:00 |
| Leicester University Timeseries Graph |
109 (4 Moderate) | 29 (1 Low) | n/m | 13 (2 Low) | 22 (2 Low) *2 | 02/05/2026 12:00:00 |
| Leominster Timeseries Graph |
71 (3 Low) | 10 (1 Low) | n/m | n/m | n/m | 01/05/2026 16:00:00 |
| Lerwick Timeseries Graph |
95 (3 Low) | n/m | n/m | n/m | n/m | 01/05/2026 13:00:00 |
| Lincoln Canwick Road Timeseries Graph |
n/m | 72 (2 Low) | n/m | n/m | n/m | 01/05/2026 20:00:00 |
| Liverpool Speke Timeseries Graph |
76 (3 Low) | 51 (1 Low) | 74 (1 Low) | 17 (2 Low) | 30 (2 Low) *1 | 02/05/2026 08:45:00 |
| Liverpool Thirlmere Park Timeseries Graph |
76 (3 Low) | n/m | n/m | 12 (2 Low) | 27 (2 Low) *2 | 02/05/2026 01:00:00 |
| London A406 N Circular Timeseries Graph |
n/m | n/m | n/m | 13 (2 Low) | n/m | 02/05/2026 11:00:00 |
| London Bexley Timeseries Graph |
n/m | 15 (1 Low) | n/m | 9 (1 Low) | 20 (2 Low) *2 | 02/05/2026 12:00:00 |
| London Bloomsbury Timeseries Graph |
99 (3 Low) | 21 (1 Low) | 2 (1 Low) | 12 (2 Low) | 23 (2 Low) *2 | 01/05/2026 12:15:00 |
| London Farringdon Street Timeseries Graph |
n/m | 38 (1 Low) | n/m | 14 (2 Low) | n/m | 02/05/2026 12:00:00 |
| London Haringey Priory Park South Timeseries Graph |
109 (4 Moderate) | 21 (1 Low) | n/m | 11 (1 Low) | 22 (2 Low) *2 | 02/05/2026 12:00:00 |
| London Harlington Timeseries Graph |
103 (4 Moderate) | 38 (1 Low) | n/m | 10 (1 Low) | 19 (2 Low) *2 | 02/05/2026 10:00:00 |
| London Hillingdon Timeseries Graph |
89 (3 Low) | 45 (1 Low) | n/m | 14 (2 Low) | 27 (2 Low) *2 | 02/05/2026 12:00:00 |
| London Honor Oak Park Timeseries Graph |
117 (4 Moderate) | n/m | n/m | 10 (1 Low) | 17 (2 Low) *2 | 02/05/2026 12:00:00 |
| London Marylebone Road Timeseries Graph |
70 (3 Low) | 53 (1 Low) | 6 (1 Low) | 14 (2 Low) | 43 (3 Low) *1 | 01/05/2026 12:45:00 |
| London N. Kensington Timeseries Graph |
108 (4 Moderate) | 19 (1 Low) | 3 (1 Low) | 11 (1 Low) | 19 (2 Low) *2 | 01/05/2026 15:45:00 |
| London Norbury Manor School Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 17 (2 Low) *2 | 02/05/2026 11:00:00 |
| London Teddington Bushy Park Timeseries Graph |
n/m | n/m | n/m | n/a | n/a | 27/04/2026 05:00:00 |
| London Westminster Timeseries Graph |
96 (3 Low) | 15 (1 Low) | n/m | n/m | n/m | 01/05/2026 20:00:00 |
| Lough Navar Timeseries Graph |
87 (3 Low) | n/m | n/m | 6 (1 Low) | 10 (1 Low) *2 | 02/05/2026 01:00:00 |
| Loughborough Thorpe Acre Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 23 (2 Low) *2 | 02/05/2026 05:00:00 |
| Lullington Heath Timeseries Graph |
93 (3 Low) | 12 (1 Low) | 18 (1 Low) | 12 (2 Low) | 17 (2 Low) *2 | 01/05/2026 19:30:00 |
| Luton A505 Roadside Timeseries Graph |
n/m | 37 (1 Low) | n/m | 11 (1 Low) | n/m | 02/05/2026 12:00:00 |
M
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Mace Head Timeseries Graph |
107 (4 Moderate) | n/m | n/m | n/m | n/m | 01/05/2026 23:00:00 |
| Maidstone Upper Stone Street Timeseries Graph |
n/m | n/m | n/m | 15 (2 Low) | 29 (2 Low) *2 | 02/05/2026 11:00:00 |
| Manchester Piccadilly Timeseries Graph |
83 (3 Low) | 23 (1 Low) | 3 (1 Low) | 19 (2 Low) | 34 (3 Low) *2 | 01/05/2026 16:00:00 |
| Manchester Sharston Timeseries Graph |
93 (3 Low) | 24 (1 Low) | n/m | 15 (2 Low) | 27 (2 Low) *2 | 02/05/2026 11:00:00 |
| Mansfield Ladybrook Timeseries Graph |
n/m | n/m | n/m | 15 (2 Low) | 27 (2 Low) *2 | 02/05/2026 11:00:00 |
| Middlesbrough Timeseries Graph |
111 (4 Moderate) | 25 (1 Low) | 3 (1 Low) | 9 (1 Low) | 27 (2 Low) *1 | 01/05/2026 12:15:00 |
| Middlewich St Michael's Way Timeseries Graph |
n/m | n/m | n/m | 14 (2 Low) | n/m | 02/05/2026 06:00:00 |
| Milton Keynes Civic Centre Timeseries Graph |
110 (4 Moderate) | n/m | n/m | 11 (1 Low) | 23 (2 Low) *2 | 02/05/2026 12:00:00 |
N
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Narberth Timeseries Graph |
93 (3 Low) | 5 (1 Low) | 2 (1 Low) | 11 (1 Low) | 17 (2 Low) *2 | 01/05/2026 14:15:00 |
| Newcastle Centre Timeseries Graph |
72 (3 Low) | 28 (1 Low) | n/m | 15 (2 Low) | 32 (2 Low) *1 | 02/05/2026 05:00:00 |
| Newcastle Cradlewell Roadside Timeseries Graph |
n/m | 64 (1 Low) | n/m | 12 (2 Low) | 26 (2 Low) *2 | 02/05/2026 07:00:00 |
| Newport Timeseries Graph |
n/m | 26 (1 Low) | n/m | 12 (2 Low) | 27 (2 Low) *2 | 02/05/2026 12:00:00 |
| Northampton Spring Park Timeseries Graph |
110 (4 Moderate) | 19 (1 Low) | n/m | 16 (2 Low) | n/m | 02/05/2026 10:00:00 |
| Norwich Lakenfields Timeseries Graph |
102 (4 Moderate) | 14 (1 Low) | n/m | 11 (1 Low) | 20 (2 Low) *2 | 02/05/2026 12:00:00 |
| Nottingham Bilborough Timeseries Graph |
n/m | n/m | n/m | 13 (2 Low) | 26 (2 Low) *2 | 02/05/2026 06:00:00 |
| Nottingham Kenmore Gardens Timeseries Graph |
104 (4 Moderate) | 15 (1 Low) | 2 (1 Low) | 15 (2 Low) | 29 (2 Low) *2 | 01/05/2026 15:45:00 |
| Nottingham Western Boulevard Timeseries Graph |
n/m | 35 (1 Low) | n/m | 14 (2 Low) | 28 (2 Low) *2 | 02/05/2026 12:00:00 |
O
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Oldbury Birmingham Road Timeseries Graph |
n/m | 37 (1 Low) | n/m | 13 (2 Low) | 28 (2 Low) *2 | 02/05/2026 12:00:00 |
| Oxford Centre Roadside Timeseries Graph |
n/m | 25 (1 Low) | n/m | n/m | n/m | 01/05/2026 13:00:00 |
| Oxford St Ebbes Timeseries Graph |
95 (3 Low) | 24 (1 Low) | n/m | 11 (1 Low) | 18 (2 Low) *2 | 02/05/2026 12:00:00 |
P
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Peebles Timeseries Graph |
93 (3 Low) | 8 (1 Low) | n/m | n/m | n/m | 01/05/2026 18:00:00 |
| Perth Glasgow Road Timeseries Graph |
n/m | 42 (1 Low) | n/m | n/m | n/m | 01/05/2026 20:00:00 |
| Peterborough Garton End Timeseries Graph |
n/m | n/m | n/m | 12 (2 Low) | 28 (2 Low) *2 | 02/05/2026 11:00:00 |
| Plymouth Centre Timeseries Graph |
89 (3 Low) | 61 (1 Low) | n/m | 19 (2 Low) | 55 (4 Moderate) *2 | 02/05/2026 08:00:00 |
| Plymouth Tavistock Road Timeseries Graph |
n/m | 24 (1 Low) | n/m | n/m | n/m | 01/05/2026 24:00: |
| Port Talbot Margam Timeseries Graph |
91 (3 Low) | 20 (1 Low) | 1 (1 Low) | 9 (1 Low) | 20 (2 Low) *3 | 01/05/2026 22:30:00 |
| Portsmouth Timeseries Graph |
86 (3 Low) | 28 (1 Low) | n/m | 13 (2 Low) | 20 (2 Low) *2 | 02/05/2026 12:00:00 |
| Portsmouth Anglesea Road Timeseries Graph |
n/m | 41 (1 Low) | n/m | 13 (2 Low) | 21 (2 Low) *2 | 02/05/2026 12:00:00 |
| Preston Timeseries Graph |
84 (3 Low) | 27 (1 Low) | n/m | 13 (2 Low) | 24 (2 Low) *2 | 02/05/2026 06:00:00 |
R
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Reading London Road Timeseries Graph |
n/m | 12 (1 Low) | n/m | n/m | 23 (2 Low) *1 | 02/05/2026 10:00:00 |
| Reading New Town Timeseries Graph |
99 (3 Low) | 13 (1 Low) | n/m | 11 (1 Low) | 19 (2 Low) *2 | 02/05/2026 12:00:00 |
| Reading Rose Kiln Lane Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | n/m | 02/05/2026 11:00:00 |
| Redcar Milford Walk Timeseries Graph |
n/m | n/m | n/m | 13 (2 Low) | 33 (2 Low) *2 | 02/05/2026 03:00:00 |
| Rochester Stoke Timeseries Graph |
95 (3 Low) | 31 (1 Low) | 3 (1 Low) | 13 (2 Low) | 21 (2 Low) *2 | 01/05/2026 13:15:00 |
| Rotherham East Dene Timeseries Graph |
n/m | n/m | n/m | 14 (2 Low) | 28 (2 Low) *2 | 02/05/2026 08:00:00 |
S
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Salford Eccles Timeseries Graph |
97 (3 Low) | 33 (1 Low) | n/m | 16 (2 Low) | 34 (3 Low) *2 | 02/05/2026 05:00:00 |
| Saltash Callington Road Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 23 (2 Low) *1 | 02/05/2026 12:00:00 |
| Scunthorpe Town Timeseries Graph |
n/m | 22 (1 Low) | 6 (1 Low) | 13 (2 Low) | 36 (3 Low) *1 | 01/05/2026 20:45:00 |
| Shaw Crompton Way Timeseries Graph |
n/m | 51 (1 Low) | n/m | n/m | n/m | 01/05/2026 17:00:00 |
| Sheffield Barnsley Road Timeseries Graph |
n/m | 42 (1 Low) | n/m | 17 (2 Low) | n/m | 02/05/2026 08:00:00 |
| Sheffield Devonshire Green Timeseries Graph |
113 (4 Moderate) | 19 (1 Low) | n/m | 16 (2 Low) | 29 (2 Low) *2 | 02/05/2026 09:00:00 |
| Sheffield Tinsley Timeseries Graph |
97 (3 Low) | 30 (1 Low) | n/m | 14 (2 Low) | 28 (2 Low) *2 | 02/05/2026 08:00:00 |
| Shrewsbury Underdale Timeseries Graph |
n/m | n/m | n/m | 16 (2 Low) | 29 (2 Low) *2 | 02/05/2026 03:00:00 |
| Sibton Timeseries Graph |
100 (3 Low) | n/m | n/m | 12 (2 Low) | 21 (2 Low) *2 | 02/05/2026 12:00:00 |
| Slough Windmill Bath Road Timeseries Graph |
n/m | n/m | n/m | 12 (2 Low) | 25 (2 Low) *2 | 02/05/2026 11:00:00 |
| Southampton A33 Timeseries Graph |
n/m | 86 (2 Low) | n/m | 14 (2 Low) | 22 (2 Low) *2 | 02/05/2026 12:00:00 |
| Southampton Centre Timeseries Graph |
87 (3 Low) | 90 (2 Low) | 17 (1 Low) | 17 (2 Low) | 26 (2 Low) *2 | 02/05/2026 12:00:00 |
| Southend Shoeburyness Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 19 (2 Low) *2 | 02/05/2026 11:00:00 |
| Southend-on-Sea Timeseries Graph |
100 (3 Low) | 24 (1 Low) | n/m | 12 (2 Low) | 21 (2 Low) *2 | 02/05/2026 12:00:00 |
| Southwark A2 Old Kent Road Timeseries Graph |
n/m | 9 (1 Low) | n/m | n/m | 31 (2 Low) *1 | 01/05/2026 13:00:00 |
| St Helens Linkway Timeseries Graph |
n/m | 52 (1 Low) | n/m | n/m | 26 (2 Low) *1 | 01/05/2026 07:00:00 |
| St Osyth Timeseries Graph |
102 (4 Moderate) | 18 (1 Low) | n/m | 13 (2 Low) | 26 (2 Low) *2 | 02/05/2026 12:00:00 |
| Stanford-le-Hope Roadside Timeseries Graph |
n/m | 20 (1 Low) | n/m | 14 (2 Low) | 22 (2 Low) *1 | 02/05/2026 12:00:00 |
| Stevenage St Georges Way South Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | n/m | 02/05/2026 11:00:00 |
| Stockton-on-Tees A1305 Roadside Timeseries Graph |
n/m | 16 (1 Low) | n/m | 10 (1 Low) | n/m | 02/05/2026 06:00:00 |
| Stockton-on-Tees Eaglescliffe Timeseries Graph |
n/m | 14 (1 Low) | n/m | 9 (1 Low) | 24 (2 Low) *1 | 02/05/2026 03:00:00 |
| Stoke-on-Trent A50 Roadside Timeseries Graph |
n/m | 72 (2 Low) | n/m | 16 (2 Low) | 33 (2 Low) *2 | 02/05/2026 03:00:00 |
| Stoke-on-Trent Centre Timeseries Graph |
81 (3 Low) | 29 (1 Low) | n/m | 16 (2 Low) | 33 (2 Low) *2 | 02/05/2026 10:00:00 |
| Storrington Roadside Timeseries Graph |
n/m | 26 (1 Low) | n/m | 15 (2 Low) | 24 (2 Low) *2 | 02/05/2026 12:00:00 |
| Strathvaich Timeseries Graph |
117 (4 Moderate) | n/m | n/m | n/m | n/m | 01/05/2026 21:00:00 |
| Sunderland Silksworth Timeseries Graph |
86 (3 Low) | 50 (1 Low) | n/m | 15 (2 Low) | 29 (2 Low) *2 | 02/05/2026 07:00:00 |
| Sunderland Wessington Way Timeseries Graph |
n/m | 28 (1 Low) | n/m | 13 (2 Low) | n/m | 02/05/2026 07:00:00 |
| Swansea Roadside Timeseries Graph |
n/m | 22 (1 Low) | n/m | 12 (2 Low) | 21 (2 Low) *1 | 02/05/2026 12:00:00 |
| Swindon Walcot Timeseries Graph |
84 (3 Low) | 12 (1 Low) | n/m | 11 (1 Low) | 20 (2 Low) *2 | 02/05/2026 12:00:00 |
T
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Tallington Timeseries Graph |
124 (5 Moderate) | n/m | n/m | 12 (2 Low) | 26 (2 Low) *2 | 02/05/2026 07:00:00 |
| Tameside A635 Manchester Road Timeseries Graph |
n/m | n/m | n/m | 17 (2 Low) | n/m | 02/05/2026 04:00:00 |
| Telford Hollinswood Timeseries Graph |
91 (3 Low) | 16 (1 Low) | n/m | 11 (1 Low) | 25 (2 Low) *2 | 02/05/2026 11:00:00 |
| Thurrock Timeseries Graph |
n/a | n/a | 2 (1 Low) | 11 (1 Low) | 22 (2 Low) *2 | 02/05/2026 05:30:00 |
| Toft Newton Timeseries Graph |
128 (5 Moderate) | 14 (1 Low) | n/m | 12 (2 Low) | 24 (2 Low) *2 | 02/05/2026 12:00:00 |
W
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Wakefield Alverthorpe Timeseries Graph |
n/m | n/m | n/m | 13 (2 Low) | 29 (2 Low) *2 | 02/05/2026 08:00:00 |
| Walsall Caldmore Timeseries Graph |
n/m | n/m | n/m | 13 (2 Low) | 24 (2 Low) *2 | 02/05/2026 11:00:00 |
| Walsall Woodlands Timeseries Graph |
104 (4 Moderate) | 13 (1 Low) | n/m | n/m | n/m | 01/05/2026 19:00:00 |
| Warrington Timeseries Graph |
n/m | 20 (1 Low) | n/m | 13 (2 Low) | 26 (2 Low) *1 | 02/05/2026 12:00:00 |
| West Bromwich Kenrick Park Timeseries Graph |
90 (3 Low) | 21 (1 Low) | n/m | n/m | n/m | 01/05/2026 19:00:00 |
| Weybourne Timeseries Graph |
112 (4 Moderate) | n/m | n/m | 12 (2 Low) | 22 (2 Low) *2 | 02/05/2026 12:00:00 |
| Wicken Fen Timeseries Graph |
105 (4 Moderate) | 10 (1 Low) | 2 (1 Low) | 11 (1 Low) | 22 (2 Low) *2 | 01/05/2026 18:15:00 |
| Widnes Milton Road Timeseries Graph |
n/m | 46 (1 Low) | n/m | n/m | n/m | 01/05/2026 14:00:00 |
| Wigan Centre Timeseries Graph |
83 (3 Low) | n/a | n/m | 15 (2 Low) | 31 (2 Low) *2 | 02/05/2026 01:00:00 |
| Wirral Tranmere Timeseries Graph |
77 (3 Low) | 23 (1 Low) | n/m | 12 (2 Low) | 23 (2 Low) *2 | 02/05/2026 01:00:00 |
| Worcester Tolladine Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 22 (2 Low) *2 | 02/05/2026 11:00:00 |
| Worthing A27 Roadside Timeseries Graph |
n/m | 28 (1 Low) | n/m | 15 (2 Low) | n/m | 02/05/2026 12:00:00 |
| Worthing East Ten Acres Timeseries Graph |
n/m | n/m | n/m | 14 (2 Low) | 22 (2 Low) *2 | 02/05/2026 11:00:00 |
| Wrexham Timeseries Graph |
n/m | 40 (1 Low) | 4 (1 Low) | 12 (2 Low) | 24 (2 Low) *2 | 01/05/2026 15:30:00 |
Y
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Yarner Wood Timeseries Graph |
97 (3 Low) | 17 (1 Low) | n/m | 9 (1 Low) | 16 (1 Low) *2 | 02/05/2026 01:00:00 |
| York Bootham Timeseries Graph |
100 (3 Low) | 18 (1 Low) | n/m | 11 (1 Low) | 26 (2 Low) *1 | 02/05/2026 04:00:00 |
| York Fishergate Timeseries Graph |
n/m | 27 (1 Low) | n/m | 8 (1 Low) | 33 (2 Low) *1 | 02/05/2026 01:00:00 |
Legend
- n/m means that the pollutant is not measured at that site
- n/a means that no data were recorded for the period
- *1: measurements are PM10 BAM 1020 heated
- *2: measurements are PM10 FIDAS
- *3: measurements are PM10 SEQ 47/50