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 9am Wed 18th Mar 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 |
73 (3 Low) | 45 (1 Low) | n/m | 9 (1 Low) | 16 (1 Low) *2 | 18/03/2026 01:00 |
| Aberdeen Wellington Road Timeseries Graph |
n/m | 73 (2 Low) | n/m | n/m | n/m | 18/03/2026 08:00 |
| Armagh Roadside Timeseries Graph |
n/m | 56 (1 Low) | n/m | n/m | 15 (1 Low) *1 | 17/03/2026 19:00 |
| Aston Hill Timeseries Graph |
80 (3 Low) | 4 (1 Low) | n/m | n/m | n/m | 17/03/2026 12:00 |
| Auchencorth Moss Timeseries Graph |
77 (3 Low) | n/m | n/m | 5 (1 Low) | 7 (1 Low) *2 | 18/03/2026 01:00 |
| Aylesbury A4157 Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | n/m | 18/03/2026 09:00 |
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 | 40 (1 Low) | n/m | n/m | n/m | 18/03/2026 08:00 |
| Ballymena Ballykeel Timeseries Graph |
n/m | 37 (1 Low) | 85 (1 Low) | n/m | n/m | 18/03/2026 02:15 |
| Barnsley Gawber Timeseries Graph |
84 (3 Low) | 39 (1 Low) | 4 (1 Low) | 9 (1 Low) | 16 (1 Low) *2 | 18/03/2026 07:45 |
| Barnstaple A39 Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 20 (2 Low) *2 | 18/03/2026 03:00 |
| Bath A4 Roadside Timeseries Graph |
n/m | 34 (1 Low) | n/m | n/m | n/m | 18/03/2026 09:00 |
| Belfast Centre Timeseries Graph |
66 (2 Low) | 62 (1 Low) | 3 (1 Low) | 7 (1 Low) | 13 (1 Low) *2 | 18/03/2026 09:00 |
| Belfast Stockman's Lane Timeseries Graph |
n/m | 95 (2 Low) | n/m | n/m | 19 (2 Low) *1 | 18/03/2026 09:00 |
| Birkenhead Borough Road Timeseries Graph |
n/m | 31 (1 Low) | n/m | 11 (1 Low) | n/m | 18/03/2026 09:00 |
| Birmingham A4540 Roadside Timeseries Graph |
65 (2 Low) | 60 (1 Low) | n/m | 12 (2 Low) | 23 (2 Low) *2 | 18/03/2026 09:00 |
| Birmingham Hall Green Timeseries Graph |
83 (3 Low) | 36 (1 Low) | n/m | 9 (1 Low) | 14 (1 Low) *2 | 18/03/2026 09:00 |
| Birmingham Ladywood Timeseries Graph |
n/a | 55 (1 Low) | 4 (1 Low) | 9 (1 Low) | 15 (1 Low) *2 | 18/03/2026 07:30 |
| Birmingham University Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 16 (1 Low) *2 | 18/03/2026 09:00 |
| Blackburn Accrington Road Timeseries Graph |
n/m | 46 (1 Low) | n/m | n/m | n/m | 18/03/2026 07:00 |
| Blackburn Audley Park Timeseries Graph |
82 (3 Low) | n/m | n/m | 8 (1 Low) | 14 (1 Low) *2 | 18/03/2026 09:00 |
| Blackpool Marton Timeseries Graph |
80 (3 Low) | 18 (1 Low) | n/m | 10 (1 Low) | 17 (2 Low) *2 | 18/03/2026 09:00 |
| Blackpool Whitegate Drive Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | n/m | 18/03/2026 09:00 |
| Borehamwood Meadow Park Timeseries Graph |
n/m | 53 (1 Low) | n/m | 10 (1 Low) | 17 (2 Low) *2 | 18/03/2026 09:00 |
| Bournemouth Timeseries Graph |
77 (3 Low) | 22 (1 Low) | n/m | 12 (2 Low) | n/m | 18/03/2026 03:00 |
| Bradford Mayo Avenue Timeseries Graph |
n/m | 65 (1 Low) | n/m | n/m | n/m | 18/03/2026 07:00 |
| Bradford Shipley Airedale Road Timeseries Graph |
n/m | n/m | n/m | 12 (2 Low) | 25 (2 Low) *2 | 18/03/2026 09:00 |
| Brighton Preston Park Timeseries Graph |
70 (3 Low) | 21 (1 Low) | n/m | 9 (1 Low) | 16 (1 Low) *2 | 18/03/2026 05:00 |
| Bristol Patchway Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 17 (2 Low) *2 | 18/03/2026 09:00 |
| Bristol St Paul's Timeseries Graph |
75 (3 Low) | 62 (1 Low) | n/m | 11 (1 Low) | 27 (2 Low) *1 | 18/03/2026 08:00 |
| Bristol Temple Way Timeseries Graph |
n/m | 64 (1 Low) | n/m | 12 (2 Low) | 20 (2 Low) *2 | 18/03/2026 09:00 |
| Burton-on-Trent Horninglow Timeseries Graph |
77 (3 Low) | 34 (1 Low) | n/m | 10 (1 Low) | 16 (1 Low) *2 | 18/03/2026 09:00 |
| Bury Whitefield Roadside Timeseries Graph |
n/m | 37 (1 Low) | n/m | n/m | 24 (2 Low) *1 | 18/03/2026 07:00 |
| Bush Estate Timeseries Graph |
91 (3 Low) | 4 (1 Low) | n/m | n/m | n/m | 17/03/2026 24:00 |
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 | 10 (1 Low) | 15 (1 Low) *2 | 18/03/2026 09:00 |
| Cambridge Roadside Timeseries Graph |
n/m | 39 (1 Low) | n/m | n/m | n/m | 18/03/2026 09:00 |
| Camden Kerbside Timeseries Graph |
n/m | 59 (1 Low) | n/m | 14 (2 Low) | 28 (2 Low) *1 | 18/03/2026 09:00 |
| Cannock A5190 Roadside Timeseries Graph |
n/m | 44 (1 Low) | n/m | 11 (1 Low) | n/m | 18/03/2026 09:00 |
| Cardiff Centre Timeseries Graph |
74 (3 Low) | 37 (1 Low) | 2 (1 Low) | 14 (2 Low) | 25 (2 Low) *1 | 18/03/2026 08:00 |
| Cardiff Newport Road Timeseries Graph |
n/m | 64 (1 Low) | n/m | n/m | 31 (2 Low) *1 | 17/03/2026 22:00 |
| Carlisle Morton A595 Timeseries Graph |
n/m | 17 (1 Low) | n/m | 8 (1 Low) | 19 (2 Low) *1 | 18/03/2026 09:00 |
| Charlton Mackrell Timeseries Graph |
80 (3 Low) | 11 (1 Low) | n/m | 10 (1 Low) | 16 (1 Low) *2 | 18/03/2026 05:00 |
| Chatham Roadside Timeseries Graph |
n/m | 29 (1 Low) | n/m | 9 (1 Low) | 25 (2 Low) *1 | 18/03/2026 06:00 |
| Cheltenham A40 Gloucester Road Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | n/m | 18/03/2026 09:00 |
| Chepstow A48 Timeseries Graph |
n/m | 57 (1 Low) | n/m | 13 (2 Low) | 25 (2 Low) *1 | 18/03/2026 09:00 |
| Chesterfield Loundsley Green Timeseries Graph |
80 (3 Low) | 15 (1 Low) | n/m | 8 (1 Low) | 13 (1 Low) *2 | 18/03/2026 09:00 |
| Chesterfield Roadside Timeseries Graph |
n/m | 37 (1 Low) | n/m | 9 (1 Low) | 16 (1 Low) *2 | 18/03/2026 09:00 |
| Chilbolton Observatory Timeseries Graph |
88 (3 Low) | 12 (1 Low) | 2 (1 Low) | 9 (1 Low) | 14 (1 Low) *2 | 17/03/2026 16:45 |
| Christchurch Barrack Road Timeseries Graph |
n/m | 48 (1 Low) | n/m | 10 (1 Low) | n/m | 18/03/2026 08:00 |
| Coventry Allesley Timeseries Graph |
70 (3 Low) | 37 (1 Low) | n/m | 9 (1 Low) | 15 (1 Low) *2 | 18/03/2026 09:00 |
| Coventry Binley Road Timeseries Graph |
n/m | 48 (1 Low) | n/m | 10 (1 Low) | 17 (2 Low) *2 | 18/03/2026 09:00 |
| Crewe Coppenhall Timeseries Graph |
79 (3 Low) | 36 (1 Low) | n/m | 10 (1 Low) | 16 (1 Low) *2 | 18/03/2026 09:00 |
| Cwmbran Crownbridge Timeseries Graph |
81 (3 Low) | 35 (1 Low) | n/m | n/m | n/m | 17/03/2026 18:00 |
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 |
| Derby St Alkmund's Way Timeseries Graph |
n/m | 57 (1 Low) | n/m | 10 (1 Low) | n/m | 18/03/2026 09:00 |
| Derby Stockbrook Park Timeseries Graph |
75 (3 Low) | n/m | n/m | 11 (1 Low) | 16 (1 Low) *2 | 18/03/2026 09:00 |
| Derry Rosemount Timeseries Graph |
71 (3 Low) | 37 (1 Low) | 6 (1 Low) | 4 (1 Low) | 9 (1 Low) *1 | 17/03/2026 22:15 |
| Dewsbury Ashworth Grange Timeseries Graph |
74 (3 Low) | 54 (1 Low) | n/m | 10 (1 Low) | 18 (2 Low) *2 | 18/03/2026 09:00 |
| Doncaster A630 Cleveland Street Timeseries Graph |
n/m | 48 (1 Low) | n/m | 11 (1 Low) | n/m | 18/03/2026 09:00 |
| Dumbarton Roadside Timeseries Graph |
n/m | 35 (1 Low) | n/m | n/m | n/m | 18/03/2026 07:00 |
| Dumfries Timeseries Graph |
n/m | 37 (1 Low) | n/m | n/m | n/m | 18/03/2026 09:00 |
| Dundee Mains Loan Timeseries Graph |
n/m | n/a | n/m | n/m | n/m | 09/02/2026 02:00 |
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 | 46 (3 Low) *1 | 18/03/2026 07:00 |
| Eastbourne Timeseries Graph |
75 (3 Low) | 38 (1 Low) | n/m | 9 (1 Low) | 16 (1 Low) *2 | 18/03/2026 03:00 |
| Edinburgh Nicolson Street Timeseries Graph |
n/m | 23 (1 Low) | n/m | n/m | n/m | 17/03/2026 19:00 |
| Edinburgh St Leonards Timeseries Graph |
84 (3 Low) | 20 (1 Low) | 1 (1 Low) | 6 (1 Low) | 10 (1 Low) *2 | 17/03/2026 15:15 |
| Eskdalemuir Timeseries Graph |
85 (3 Low) | 3 (1 Low) | n/m | n/m | n/m | 17/03/2026 21:00 |
| Exeter Roadside Timeseries Graph |
79 (3 Low) | 55 (1 Low) | n/m | n/m | n/m | 17/03/2026 10:00 |
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 | 9 (1 Low) | 14 (1 Low) *2 | 18/03/2026 09:00 |
| Fort William Timeseries Graph |
88 (3 Low) | 26 (1 Low) | n/m | n/m | n/m | 17/03/2026 24:00 |
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 | 33 (1 Low) | n/m | n/m | n/m | 18/03/2026 07:00 |
| Glasgow High Street Timeseries Graph |
n/m | 33 (1 Low) | n/m | 11 (1 Low) | 19 (2 Low) *2 | 18/03/2026 09:00 |
| Glasgow Kerbside Timeseries Graph |
n/m | 65 (1 Low) | n/m | n/m | n/m | 18/03/2026 09:00 |
| Glasgow Townhead Timeseries Graph |
85 (3 Low) | 35 (1 Low) | n/m | 10 (1 Low) | 17 (2 Low) *2 | 18/03/2026 09:00 |
| Glazebury Timeseries Graph |
82 (3 Low) | 34 (1 Low) | n/m | 8 (1 Low) | 13 (1 Low) *2 | 18/03/2026 09:00 |
| Gloucester Tredworth Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 18 (2 Low) *2 | 18/03/2026 09:00 |
| Grangemouth Timeseries Graph |
n/m | 19 (1 Low) | 1 (1 Low) | 7 (1 Low) | 16 (1 Low) *1 | 17/03/2026 10:30 |
| Grangemouth Moray Timeseries Graph |
n/m | 27 (1 Low) | n/m | n/m | n/m | 18/03/2026 08:00 |
| Greenock A8 Roadside Timeseries Graph |
n/m | 55 (1 Low) | n/m | 9 (1 Low) | 16 (1 Low) *2 | 18/03/2026 09:00 |
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 | 43 (1 Low) | n/m | n/m | n/m | 17/03/2026 22:00 |
| Haringey Roadside Timeseries Graph |
n/m | 63 (1 Low) | n/m | n/m | n/m | 17/03/2026 24:00 |
| Harrogate Woodlands Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 14 (1 Low) *2 | 18/03/2026 09:00 |
| Hartlepool St Abbs Walk Timeseries Graph |
78 (3 Low) | 26 (1 Low) | n/m | 9 (1 Low) | 15 (1 Low) *2 | 18/03/2026 09:00 |
| High Muffles Timeseries Graph |
76 (3 Low) | 6 (1 Low) | n/m | 8 (1 Low) | 13 (1 Low) *2 | 18/03/2026 09:00 |
| Honiton Timeseries Graph |
81 (3 Low) | 13 (1 Low) | n/m | 10 (1 Low) | 17 (2 Low) *2 | 18/03/2026 04:00 |
| Horley Timeseries Graph |
n/m | 31 (1 Low) | n/m | 12 (2 Low) | 18 (2 Low) *2 | 18/03/2026 09:00 |
| Hull Freetown Timeseries Graph |
70 (3 Low) | 50 (1 Low) | 4 (1 Low) | 10 (1 Low) | 18 (2 Low) *2 | 18/03/2026 08:45 |
| Hull Holderness Road Timeseries Graph |
n/m | 56 (1 Low) | n/m | 10 (1 Low) | 18 (2 Low) *2 | 18/03/2026 09:00 |
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 |
81 (3 Low) | 33 (1 Low) | n/m | 8 (1 Low) | 12 (1 Low) *2 | 18/03/2026 09:00 |
| Inverness Timeseries Graph |
n/m | 17 (1 Low) | n/m | 3 (1 Low) | 5 (1 Low) *2 | 18/03/2026 09:00 |
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 |
78 (3 Low) | n/m | n/m | 7 (1 Low) | 12 (1 Low) *2 | 18/03/2026 09:00 |
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 |
89 (3 Low) | 11 (1 Low) | 4 (1 Low) | 8 (1 Low) | 13 (1 Low) *2 | 17/03/2026 16:15 |
| Leamington Spa Timeseries Graph |
79 (3 Low) | 30 (1 Low) | n/m | 9 (1 Low) | 15 (1 Low) *2 | 18/03/2026 09:00 |
| Leamington Spa Rugby Road Timeseries Graph |
n/m | 39 (1 Low) | n/m | 9 (1 Low) | 13 (1 Low) *2 | 18/03/2026 09:00 |
| Leeds Centre Timeseries Graph |
69 (3 Low) | 47 (1 Low) | 3 (1 Low) | 11 (1 Low) | 19 (2 Low) *2 | 18/03/2026 09:00 |
| Leeds Headingley Kerbside Timeseries Graph |
n/m | 55 (1 Low) | n/m | 14 (2 Low) | 28 (2 Low) *1 | 18/03/2026 09:00 |
| Leicester A594 Roadside Timeseries Graph |
n/m | 37 (1 Low) | n/m | 11 (1 Low) | 20 (2 Low) *2 | 18/03/2026 09:00 |
| Leicester University Timeseries Graph |
75 (3 Low) | 21 (1 Low) | n/m | 10 (1 Low) | 14 (1 Low) *2 | 18/03/2026 09:00 |
| Leominster Timeseries Graph |
79 (3 Low) | 19 (1 Low) | n/m | n/m | n/m | 17/03/2026 16:00 |
| Lerwick Timeseries Graph |
88 (3 Low) | n/m | n/m | n/m | n/m | 18/03/2026 02:00 |
| Lincoln Canwick Road Timeseries Graph |
n/m | 84 (2 Low) | n/m | n/m | n/m | 17/03/2026 18:00 |
| Liverpool Speke Timeseries Graph |
73 (3 Low) | 43 (1 Low) | 22 (1 Low) | 11 (1 Low) | 22 (2 Low) *1 | 17/03/2026 15:30 |
| Liverpool Thirlmere Park Timeseries Graph |
72 (3 Low) | n/m | n/m | 11 (1 Low) | 18 (2 Low) *2 | 18/03/2026 09:00 |
| London A406 N Circular Timeseries Graph |
n/m | n/m | n/m | 13 (2 Low) | n/m | 18/03/2026 09:00 |
| London Bexley Timeseries Graph |
n/m | 60 (1 Low) | n/m | 9 (1 Low) | 16 (1 Low) *2 | 18/03/2026 09:00 |
| London Bloomsbury Timeseries Graph |
72 (3 Low) | 54 (1 Low) | 7 (1 Low) | 10 (1 Low) | 17 (2 Low) *2 | 18/03/2026 08:45 |
| London Farringdon Street Timeseries Graph |
n/m | 63 (1 Low) | n/m | 12 (2 Low) | n/m | 18/03/2026 09:00 |
| London Haringey Priory Park South Timeseries Graph |
80 (3 Low) | 41 (1 Low) | n/m | 10 (1 Low) | 16 (1 Low) *2 | 18/03/2026 09:00 |
| London Harlington Timeseries Graph |
69 (3 Low) | 61 (1 Low) | n/m | 9 (1 Low) | 14 (1 Low) *2 | 18/03/2026 09:00 |
| London Hillingdon Timeseries Graph |
61 (2 Low) | 74 (2 Low) | n/m | 11 (1 Low) | 23 (2 Low) *2 | 18/03/2026 09:00 |
| London Honor Oak Park Timeseries Graph |
88 (3 Low) | n/m | n/m | 9 (1 Low) | 14 (1 Low) *2 | 18/03/2026 09:00 |
| London Marylebone Road Timeseries Graph |
9 (1 Low) | 57 (1 Low) | 4 (1 Low) | 15 (2 Low) | 23 (2 Low) *1 | 18/03/2026 08:45 |
| London N. Kensington Timeseries Graph |
83 (3 Low) | 53 (1 Low) | 2 (1 Low) | 10 (1 Low) | 16 (1 Low) *2 | 17/03/2026 20:45 |
| London Norbury Manor School Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 15 (1 Low) *2 | 18/03/2026 09:00 |
| London Teddington Bushy Park Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 16 (1 Low) *2 | 18/03/2026 09:00 |
| London Westminster Timeseries Graph |
72 (3 Low) | 47 (1 Low) | n/m | n/m | n/m | 17/03/2026 18:00 |
| Lough Navar Timeseries Graph |
72 (3 Low) | n/m | n/m | 3 (1 Low) | 5 (1 Low) *2 | 18/03/2026 09:00 |
| Loughborough Thorpe Acre Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 14 (1 Low) *2 | 18/03/2026 09:00 |
| Lullington Heath Timeseries Graph |
90 (3 Low) | 11 (1 Low) | 2 (1 Low) | 8 (1 Low) | 13 (1 Low) *2 | 17/03/2026 16:45 |
| Luton A505 Roadside Timeseries Graph |
n/m | 79 (2 Low) | n/m | 11 (1 Low) | n/m | 18/03/2026 09:00 |
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 |
103 (4 Moderate) | n/m | n/m | n/m | n/m | 17/03/2026 16:00 |
| Maidstone Upper Stone Street Timeseries Graph |
n/m | n/m | n/m | 13 (2 Low) | 26 (2 Low) *2 | 18/03/2026 07:00 |
| Manchester Piccadilly Timeseries Graph |
64 (2 Low) | 38 (1 Low) | 3 (1 Low) | 12 (2 Low) | 22 (2 Low) *2 | 18/03/2026 08:15 |
| Manchester Sharston Timeseries Graph |
82 (3 Low) | 33 (1 Low) | n/m | 9 (1 Low) | 15 (1 Low) *2 | 18/03/2026 09:00 |
| Mansfield Ladybrook Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 16 (1 Low) *2 | 18/03/2026 09:00 |
| Middlesbrough Timeseries Graph |
62 (2 Low) | 23 (1 Low) | 4 (1 Low) | 7 (1 Low) | 18 (2 Low) *1 | 17/03/2026 17:15 |
| Middlewich St Michael's Way Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | n/m | 18/03/2026 09:00 |
| Milton Keynes Civic Centre Timeseries Graph |
79 (3 Low) | n/m | n/m | 12 (2 Low) | 17 (2 Low) *2 | 18/03/2026 09:00 |
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 |
81 (3 Low) | 7 (1 Low) | 1 (1 Low) | 11 (1 Low) | 20 (2 Low) *2 | 17/03/2026 23:00 |
| Newcastle Centre Timeseries Graph |
74 (3 Low) | 34 (1 Low) | n/m | 9 (1 Low) | 20 (2 Low) *1 | 18/03/2026 09:00 |
| Newcastle Cradlewell Roadside Timeseries Graph |
n/m | 61 (1 Low) | n/m | 8 (1 Low) | 17 (2 Low) *2 | 18/03/2026 09:00 |
| Newport Timeseries Graph |
n/m | 48 (1 Low) | n/m | 12 (2 Low) | 21 (2 Low) *2 | 18/03/2026 06:00 |
| Northampton Spring Park Timeseries Graph |
76 (3 Low) | 31 (1 Low) | n/m | 14 (2 Low) | n/m | 18/03/2026 09:00 |
| Norwich Lakenfields Timeseries Graph |
69 (3 Low) | 16 (1 Low) | n/m | 9 (1 Low) | 14 (1 Low) *2 | 18/03/2026 09:00 |
| Nottingham Bilborough Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 15 (1 Low) *2 | 18/03/2026 09:00 |
| Nottingham Kenmore Gardens Timeseries Graph |
71 (3 Low) | 25 (1 Low) | 1 (1 Low) | 10 (1 Low) | 17 (2 Low) *2 | 17/03/2026 19:15 |
| Nottingham Western Boulevard Timeseries Graph |
n/m | 61 (1 Low) | n/m | 11 (1 Low) | 19 (2 Low) *2 | 18/03/2026 09:00 |
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 | 59 (1 Low) | n/m | 11 (1 Low) | 19 (2 Low) *2 | 18/03/2026 09:00 |
| Oxford Centre Roadside Timeseries Graph |
n/m | 41 (1 Low) | n/m | n/m | n/m | 18/03/2026 01:00 |
| Oxford St Ebbes Timeseries Graph |
75 (3 Low) | 46 (1 Low) | n/m | 9 (1 Low) | 16 (1 Low) *2 | 18/03/2026 09:00 |
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 |
88 (3 Low) | 11 (1 Low) | n/m | n/m | n/m | 17/03/2026 22:00 |
| Perth Glasgow Road Timeseries Graph |
n/m | 51 (1 Low) | n/m | n/m | n/m | 18/03/2026 08:00 |
| Peterborough Garton End Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 17 (2 Low) *2 | 18/03/2026 09:00 |
| Plymouth Centre Timeseries Graph |
75 (3 Low) | 55 (1 Low) | n/m | 14 (2 Low) | 29 (2 Low) *2 | 17/03/2026 24:00 |
| Plymouth Tavistock Road Timeseries Graph |
n/m | 32 (1 Low) | n/m | n/m | n/m | 17/03/2026 20:00 |
| Port Talbot Margam Timeseries Graph |
73 (3 Low) | 40 (1 Low) | 1 (1 Low) | 9 (1 Low) | 22 (2 Low) *3 | 18/03/2026 06:30 |
| Portsmouth Timeseries Graph |
76 (3 Low) | 24 (1 Low) | n/m | 9 (1 Low) | 16 (1 Low) *2 | 18/03/2026 05:00 |
| Portsmouth Anglesea Road Timeseries Graph |
n/m | 36 (1 Low) | n/m | 11 (1 Low) | 19 (2 Low) *2 | 18/03/2026 05:00 |
| Preston Timeseries Graph |
74 (3 Low) | 31 (1 Low) | n/m | 9 (1 Low) | 16 (1 Low) *2 | 18/03/2026 09:00 |
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 | 54 (1 Low) | n/m | n/m | 22 (2 Low) *1 | 17/03/2026 22:00 |
| Reading New Town Timeseries Graph |
74 (3 Low) | 53 (1 Low) | n/m | 11 (1 Low) | 16 (1 Low) *2 | 18/03/2026 08:00 |
| Reading Rose Kiln Lane Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | n/m | 18/03/2026 09:00 |
| Redcar Milford Walk Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | 14 (1 Low) *2 | 18/03/2026 09:00 |
| Rochester Stoke Timeseries Graph |
83 (3 Low) | 33 (1 Low) | 3 (1 Low) | 12 (2 Low) | 18 (2 Low) *2 | 17/03/2026 21:45 |
| Rotherham East Dene Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 16 (1 Low) *2 | 18/03/2026 09:00 |
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 |
79 (3 Low) | 50 (1 Low) | n/m | 13 (2 Low) | 25 (2 Low) *2 | 18/03/2026 09:00 |
| Saltash Callington Road Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 27 (2 Low) *1 | 18/03/2026 03:00 |
| Scunthorpe Town Timeseries Graph |
n/m | 40 (1 Low) | 4 (1 Low) | 12 (2 Low) | 20 (2 Low) *1 | 17/03/2026 19:45 |
| Shaw Crompton Way Timeseries Graph |
n/m | 50 (1 Low) | n/m | n/m | n/m | 18/03/2026 07:00 |
| Sheffield Barnsley Road Timeseries Graph |
n/m | 49 (1 Low) | n/m | 12 (2 Low) | n/m | 18/03/2026 09:00 |
| Sheffield Devonshire Green Timeseries Graph |
74 (3 Low) | 47 (1 Low) | n/m | 10 (1 Low) | 18 (2 Low) *2 | 18/03/2026 09:00 |
| Sheffield Tinsley Timeseries Graph |
67 (3 Low) | 48 (1 Low) | n/m | 12 (2 Low) | 25 (2 Low) *2 | 18/03/2026 09:00 |
| Shrewsbury Underdale Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 15 (1 Low) *2 | 18/03/2026 09:00 |
| Sibton Timeseries Graph |
76 (3 Low) | n/m | n/m | 9 (1 Low) | 14 (1 Low) *2 | 18/03/2026 09:00 |
| Slough Windmill Bath Road Timeseries Graph |
n/m | n/m | n/m | 12 (2 Low) | 22 (2 Low) *2 | 18/03/2026 09:00 |
| Southampton A33 Timeseries Graph |
n/m | 78 (2 Low) | n/m | 11 (1 Low) | 24 (2 Low) *2 | 18/03/2026 06:00 |
| Southampton Centre Timeseries Graph |
75 (3 Low) | 47 (1 Low) | 4 (1 Low) | 11 (1 Low) | 19 (2 Low) *2 | 17/03/2026 14:00 |
| Southend Shoeburyness Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 14 (1 Low) *2 | 18/03/2026 09:00 |
| Southend-on-Sea Timeseries Graph |
75 (3 Low) | 28 (1 Low) | n/m | 9 (1 Low) | 14 (1 Low) *2 | 18/03/2026 09:00 |
| Southwark A2 Old Kent Road Timeseries Graph |
n/m | 65 (1 Low) | n/m | n/m | 29 (2 Low) *1 | 18/03/2026 01:00 |
| St Helens Linkway Timeseries Graph |
n/m | 63 (1 Low) | n/m | n/m | 29 (2 Low) *1 | 18/03/2026 07:00 |
| St Osyth Timeseries Graph |
84 (3 Low) | 43 (1 Low) | n/m | 9 (1 Low) | 14 (1 Low) *2 | 18/03/2026 09:00 |
| Stanford-le-Hope Roadside Timeseries Graph |
n/m | 56 (1 Low) | n/m | 12 (2 Low) | n/a | 18/03/2026 09:00 |
| Stockton-on-Tees A1305 Roadside Timeseries Graph |
n/m | 51 (1 Low) | n/m | 8 (1 Low) | n/m | 18/03/2026 09:00 |
| Stockton-on-Tees Eaglescliffe Timeseries Graph |
n/m | 26 (1 Low) | n/m | 7 (1 Low) | 21 (2 Low) *1 | 17/03/2026 21:00 |
| Stoke-on-Trent A50 Roadside Timeseries Graph |
n/m | 62 (1 Low) | n/m | 12 (2 Low) | 22 (2 Low) *2 | 18/03/2026 09:00 |
| Stoke-on-Trent Centre Timeseries Graph |
70 (3 Low) | 18 (1 Low) | n/m | 10 (1 Low) | 17 (2 Low) *2 | 18/03/2026 09:00 |
| Storrington Roadside Timeseries Graph |
n/m | 42 (1 Low) | n/m | 11 (1 Low) | 22 (2 Low) *2 | 18/03/2026 08:00 |
| Strathvaich Timeseries Graph |
102 (4 Moderate) | n/m | n/m | n/m | n/m | 17/03/2026 23:00 |
| Sunderland Silksworth Timeseries Graph |
83 (3 Low) | 12 (1 Low) | n/m | 8 (1 Low) | 15 (1 Low) *2 | 18/03/2026 09:00 |
| Sunderland Wessington Way Timeseries Graph |
n/m | 28 (1 Low) | n/m | 8 (1 Low) | n/m | 18/03/2026 09:00 |
| Swansea Roadside Timeseries Graph |
n/m | 54 (1 Low) | n/m | 12 (2 Low) | 27 (2 Low) *1 | 18/03/2026 09:00 |
| Swindon Walcot Timeseries Graph |
78 (3 Low) | 32 (1 Low) | n/m | 8 (1 Low) | 13 (1 Low) *2 | 18/03/2026 08:00 |
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 |
79 (3 Low) | n/m | n/m | 8 (1 Low) | 13 (1 Low) *2 | 18/03/2026 09:00 |
| Tameside A635 Manchester Road Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | n/m | 18/03/2026 09:00 |
| Telford Hollinswood Timeseries Graph |
84 (3 Low) | 32 (1 Low) | n/m | 9 (1 Low) | 14 (1 Low) *2 | 18/03/2026 09:00 |
| Thurrock Timeseries Graph |
75 (3 Low) | 66 (1 Low) | 2 (1 Low) | 10 (1 Low) | 17 (2 Low) *2 | 18/03/2026 03:00 |
| Toft Newton Timeseries Graph |
85 (3 Low) | 9 (1 Low) | n/m | 8 (1 Low) | 13 (1 Low) *2 | 18/03/2026 09:00 |
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 | 11 (1 Low) | 19 (2 Low) *2 | 18/03/2026 09:00 |
| Walsall Caldmore Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 17 (2 Low) *2 | 18/03/2026 09:00 |
| Walsall Woodlands Timeseries Graph |
84 (3 Low) | 29 (1 Low) | n/m | n/m | n/m | 17/03/2026 17:00 |
| Warrington Timeseries Graph |
n/m | 39 (1 Low) | n/m | 10 (1 Low) | 21 (2 Low) *1 | 18/03/2026 09:00 |
| West Bromwich Kenrick Park Timeseries Graph |
72 (3 Low) | 55 (1 Low) | n/m | n/m | n/m | 17/03/2026 12:00 |
| Weybourne Timeseries Graph |
71 (3 Low) | n/m | n/m | 9 (1 Low) | 12 (1 Low) *2 | 18/03/2026 09:00 |
| Wicken Fen Timeseries Graph |
66 (2 Low) | 14 (1 Low) | 10 (1 Low) | 8 (1 Low) | 13 (1 Low) *2 | 17/03/2026 13:45 |
| Widnes Milton Road Timeseries Graph |
n/m | 53 (1 Low) | n/m | n/m | n/m | 18/03/2026 08:00 |
| Wigan Centre Timeseries Graph |
73 (3 Low) | 48 (1 Low) | n/m | 11 (1 Low) | 20 (2 Low) *2 | 18/03/2026 09:00 |
| Wirral Tranmere Timeseries Graph |
79 (3 Low) | 26 (1 Low) | n/m | 9 (1 Low) | 15 (1 Low) *2 | 18/03/2026 09:00 |
| Worcester Tolladine Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 16 (1 Low) *2 | 18/03/2026 09:00 |
| Worthing A27 Roadside Timeseries Graph |
n/m | 49 (1 Low) | n/m | 13 (2 Low) | n/m | 18/03/2026 07:00 |
| Worthing East Ten Acres Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 19 (2 Low) *2 | 18/03/2026 06:00 |
| Wrexham Timeseries Graph |
n/m | 46 (1 Low) | 3 (1 Low) | 9 (1 Low) | 16 (1 Low) *2 | 18/03/2026 08:45 |
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 |
85 (3 Low) | 10 (1 Low) | n/m | 9 (1 Low) | 15 (1 Low) *2 | 18/03/2026 02:00 |
| York Bootham Timeseries Graph |
69 (3 Low) | 21 (1 Low) | n/m | 11 (1 Low) | 23 (2 Low) *1 | 18/03/2026 09:00 |
| York Fishergate Timeseries Graph |
n/m | 33 (1 Low) | n/m | 9 (1 Low) | 27 (2 Low) *1 | 18/03/2026 09:00 |
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