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 10pm Fri 1st May 2026
Central Scotland
| 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 |
| Auchencorth Moss Timeseries Graph |
82 (3 Low) | n/m | n/m | 6 (1 Low) | 14 (1 Low) *2 | 01/05/2026 22:00:00 |
| Bush Estate Timeseries Graph |
99 (3 Low) | 20 (1 Low) | n/m | n/m | n/m | 30/04/2026 23:00:00 |
| Dumbarton Roadside Timeseries Graph |
n/m | 30 (1 Low) | n/m | n/m | n/m | 01/05/2026 09:00:00 |
| 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 |
90 (3 Low) | 28 (1 Low) | 3 (1 Low) | 8 (1 Low) | 18 (2 Low) *2 | 01/05/2026 12:15:00 |
| 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 | 28 (1 Low) | n/m | 10 (1 Low) | 25 (2 Low) *2 | 01/05/2026 22:00:00 |
| Glasgow Kerbside Timeseries Graph |
n/m | 93 (2 Low) | n/m | n/m | n/m | 01/05/2026 10:00:00 |
| Glasgow Townhead Timeseries Graph |
92 (3 Low) | 22 (1 Low) | n/m | 9 (1 Low) | 21 (2 Low) *2 | 01/05/2026 22:00:00 |
| Grangemouth Timeseries Graph |
n/m | 34 (1 Low) | 5 (1 Low) | 10 (1 Low) | 24 (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 | 41 (1 Low) | n/m | 9 (1 Low) | 21 (2 Low) *2 | 01/05/2026 22:00:00 |
East Midlands
| 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 |
| Chesterfield Loundsley Green Timeseries Graph |
107 (4 Moderate) | 35 (1 Low) | n/m | 9 (1 Low) | 24 (2 Low) *2 | 01/05/2026 22:00:00 |
| Chesterfield Roadside Timeseries Graph |
n/m | 45 (1 Low) | n/m | 10 (1 Low) | 26 (2 Low) *2 | 01/05/2026 22:00:00 |
| Derby St Alkmund's Way Timeseries Graph |
n/m | 54 (1 Low) | n/m | 12 (2 Low) | n/m | 01/05/2026 21:00:00 |
| Derby Stockbrook Park Timeseries Graph |
102 (4 Moderate) | n/m | n/m | 11 (1 Low) | 28 (2 Low) *2 | 01/05/2026 21:00:00 |
| Ladybower Timeseries Graph |
118 (4 Moderate) | 14 (1 Low) | 6 (1 Low) | 14 (2 Low) | 29 (2 Low) *2 | 01/05/2026 14:00:00 |
| Leicester A594 Roadside Timeseries Graph |
n/m | 54 (1 Low) | n/m | 11 (1 Low) | 28 (2 Low) *2 | 01/05/2026 22:00:00 |
| Leicester University Timeseries Graph |
109 (4 Moderate) | 29 (1 Low) | n/m | 9 (1 Low) | 23 (2 Low) *2 | 01/05/2026 22:00:00 |
| Lincoln Canwick Road Timeseries Graph |
n/m | 77 (2 Low) | n/m | n/m | n/m | 01/05/2026 08:00:00 |
| Loughborough Thorpe Acre Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 24 (2 Low) *2 | 01/05/2026 22:00:00 |
| Mansfield Ladybrook Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 26 (2 Low) *2 | 01/05/2026 22:00:00 |
| Northampton Spring Park Timeseries Graph |
110 (4 Moderate) | 23 (1 Low) | n/m | 11 (1 Low) | n/m | 01/05/2026 08:00:00 |
| Nottingham Bilborough Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 27 (2 Low) *2 | 01/05/2026 22:00:00 |
| Nottingham Kenmore Gardens Timeseries Graph |
104 (4 Moderate) | 19 (1 Low) | 6 (1 Low) | 12 (2 Low) | 29 (2 Low) *2 | 30/04/2026 23:00:00 |
| Nottingham Western Boulevard Timeseries Graph |
n/m | 55 (1 Low) | n/m | 11 (1 Low) | 29 (2 Low) *2 | 01/05/2026 22:00:00 |
| Tallington Timeseries Graph |
124 (5 Moderate) | n/m | n/m | 10 (1 Low) | 26 (2 Low) *2 | 01/05/2026 22:00:00 |
| Toft Newton Timeseries Graph |
128 (5 Moderate) | 12 (1 Low) | n/m | 8 (1 Low) | 22 (2 Low) *2 | 01/05/2026 22:00:00 |
Eastern
| 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 |
| Borehamwood Meadow Park Timeseries Graph |
n/m | 36 (1 Low) | n/m | 8 (1 Low) | 26 (2 Low) *2 | 01/05/2026 20:00:00 |
| Cambridge King's Hedges Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | 26 (2 Low) *2 | 01/05/2026 22:00:00 |
| Cambridge Roadside Timeseries Graph |
n/m | 46 (1 Low) | n/m | n/m | n/m | 01/05/2026 17:00:00 |
| Luton A505 Roadside Timeseries Graph |
n/m | 47 (1 Low) | n/m | 8 (1 Low) | n/m | 01/05/2026 16:00:00 |
| Norwich Lakenfields Timeseries Graph |
102 (4 Moderate) | 22 (1 Low) | n/m | 7 (1 Low) | 18 (2 Low) *2 | 01/05/2026 22:00:00 |
| Peterborough Garton End Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 30 (2 Low) *2 | 01/05/2026 22:00:00 |
| Sibton Timeseries Graph |
100 (3 Low) | n/m | n/m | 11 (1 Low) | 25 (2 Low) *2 | 01/05/2026 21:00:00 |
| Southend Shoeburyness Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 23 (2 Low) *2 | 01/05/2026 22:00:00 |
| Southend-on-Sea Timeseries Graph |
100 (3 Low) | 28 (1 Low) | n/m | 7 (1 Low) | 27 (2 Low) *2 | 01/05/2026 02:00:00 |
| St Osyth Timeseries Graph |
102 (4 Moderate) | 19 (1 Low) | n/m | 9 (1 Low) | 31 (2 Low) *2 | 01/05/2026 20:00:00 |
| Stanford-le-Hope Roadside Timeseries Graph |
n/m | 61 (1 Low) | n/m | 11 (1 Low) | 28 (2 Low) *1 | 01/05/2026 12:00:00 |
| Stevenage St Georges Way South Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | n/m | 01/05/2026 22:00:00 |
| Thurrock Timeseries Graph |
n/a | n/a | 2 (1 Low) | 9 (1 Low) | 29 (2 Low) *2 | 01/05/2026 21:00:00 |
| Weybourne Timeseries Graph |
112 (4 Moderate) | n/m | n/m | 6 (1 Low) | 17 (2 Low) *2 | 01/05/2026 01:00:00 |
| Wicken Fen Timeseries Graph |
105 (4 Moderate) | 12 (1 Low) | 4 (1 Low) | 8 (1 Low) | 25 (2 Low) *2 | 01/05/2026 07:45:00 |
Greater London
| 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 |
| Camden Kerbside Timeseries Graph |
n/m | 70 (2 Low) | n/m | 13 (2 Low) | 43 (3 Low) *1 | 01/05/2026 12:00:00 |
| Ealing Horn Lane Timeseries Graph |
n/m | n/m | n/m | n/m | 45 (3 Low) *1 | 01/05/2026 17:00:00 |
| Haringey Roadside Timeseries Graph |
n/m | 57 (1 Low) | n/m | n/m | n/m | 01/05/2026 03:00:00 |
| London A406 N Circular Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | n/m | 01/05/2026 14:00:00 |
| London Bexley Timeseries Graph |
n/m | 71 (2 Low) | n/m | 8 (1 Low) | 27 (2 Low) *2 | 01/05/2026 12:00:00 |
| London Bloomsbury Timeseries Graph |
99 (3 Low) | 56 (1 Low) | 2 (1 Low) | 9 (1 Low) | 32 (2 Low) *2 | 30/04/2026 22:15:00 |
| London Farringdon Street Timeseries Graph |
n/m | 59 (1 Low) | n/m | 10 (1 Low) | n/m | 01/05/2026 12:00:00 |
| London Haringey Priory Park South Timeseries Graph |
109 (4 Moderate) | 40 (1 Low) | n/m | 8 (1 Low) | 29 (2 Low) *2 | 01/05/2026 13:00:00 |
| London Harlington Timeseries Graph |
103 (4 Moderate) | 62 (1 Low) | n/m | 7 (1 Low) | 27 (2 Low) *2 | 01/05/2026 02:00:00 |
| London Hillingdon Timeseries Graph |
90 (3 Low) | 62 (1 Low) | n/m | 10 (1 Low) | 35 (3 Low) *2 | 01/05/2026 12:00:00 |
| London Honor Oak Park Timeseries Graph |
117 (4 Moderate) | n/m | n/m | 8 (1 Low) | 26 (2 Low) *2 | 01/05/2026 03:00:00 |
| London Marylebone Road Timeseries Graph |
71 (3 Low) | 80 (2 Low) | 6 (1 Low) | 14 (2 Low) | 43 (3 Low) *1 | 01/05/2026 11:00:00 |
| London N. Kensington Timeseries Graph |
108 (4 Moderate) | 45 (1 Low) | 3 (1 Low) | 8 (1 Low) | 27 (2 Low) *2 | 01/05/2026 10:45:00 |
| London Norbury Manor School Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | 25 (2 Low) *2 | 01/05/2026 01:00:00 |
| 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) | 49 (1 Low) | n/m | n/m | n/m | 01/05/2026 20:00:00 |
| Southwark A2 Old Kent Road Timeseries Graph |
n/m | 55 (1 Low) | n/m | n/m | 54 (4 Moderate) *1 | 01/05/2026 07:00:00 |
Highland
| 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 |
| Fort William Timeseries Graph |
94 (3 Low) | 30 (1 Low) | n/m | n/m | n/m | 30/04/2026 23:00:00 |
| Inverness Timeseries Graph |
n/m | 24 (1 Low) | n/m | 4 (1 Low) | 13 (1 Low) *2 | 01/05/2026 22:00:00 |
| Lerwick Timeseries Graph |
97 (3 Low) | n/m | n/m | n/m | n/m | 01/05/2026 07:00:00 |
| Strathvaich Timeseries Graph |
117 (4 Moderate) | n/m | n/m | n/m | n/m | 01/05/2026 21:00:00 |
North East
| 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) | 23 (2 Low) *2 | 01/05/2026 22:00:00 |
| Hartlepool St Abbs Walk Timeseries Graph |
101 (4 Moderate) | 33 (1 Low) | n/m | 12 (2 Low) | 31 (2 Low) *2 | 01/05/2026 22:00:00 |
| Kielder Water Timeseries Graph |
96 (3 Low) | n/m | n/m | 6 (1 Low) | 15 (1 Low) *2 | 01/05/2026 22:00:00 |
| Middlesbrough Timeseries Graph |
111 (4 Moderate) | 27 (1 Low) | 3 (1 Low) | 9 (1 Low) | 28 (2 Low) *1 | 01/05/2026 12:30:00 |
| Newcastle Centre Timeseries Graph |
72 (3 Low) | 63 (1 Low) | n/m | 13 (2 Low) | 34 (3 Low) *1 | 01/05/2026 22:00:00 |
| Newcastle Cradlewell Roadside Timeseries Graph |
n/m | 80 (2 Low) | n/m | 11 (1 Low) | 27 (2 Low) *2 | 01/05/2026 22:00:00 |
| Redcar Milford Walk Timeseries Graph |
n/m | n/m | n/m | 13 (2 Low) | 34 (3 Low) *2 | 01/05/2026 22:00:00 |
| Stockton-on-Tees A1305 Roadside Timeseries Graph |
n/m | 24 (1 Low) | n/m | 10 (1 Low) | n/m | 01/05/2026 22:00:00 |
| Stockton-on-Tees Eaglescliffe Timeseries Graph |
n/m | 15 (1 Low) | n/m | 8 (1 Low) | 26 (2 Low) *1 | 01/05/2026 22:00:00 |
| Sunderland Silksworth Timeseries Graph |
96 (3 Low) | 50 (1 Low) | n/m | 12 (2 Low) | 29 (2 Low) *2 | 01/05/2026 22:00:00 |
| Sunderland Wessington Way Timeseries Graph |
n/m | 31 (1 Low) | n/m | 11 (1 Low) | n/m | 01/05/2026 22:00:00 |
North East Scotland
| 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 |
84 (3 Low) | 36 (1 Low) | n/m | 9 (1 Low) | 23 (2 Low) *2 | 01/05/2026 18:00:00 |
| Aberdeen Wellington Road Timeseries Graph |
n/m | 54 (1 Low) | n/m | n/m | n/m | 01/05/2026 09:00:00 |
| Dundee Mains Loan Timeseries Graph |
n/m | 29 (1 Low) | n/m | n/m | n/m | 01/05/2026 16:00:00 |
| Perth Glasgow Road Timeseries Graph |
n/m | 42 (1 Low) | n/m | n/m | n/m | 01/05/2026 20:00:00 |
North Wales
| 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 |
| Aston Hill Timeseries Graph |
110 (4 Moderate) | 9 (1 Low) | n/m | n/m | n/m | 30/04/2026 23:00:00 |
| Wrexham Timeseries Graph |
n/m | 40 (1 Low) | 4 (1 Low) | 12 (2 Low) | 26 (2 Low) *2 | 01/05/2026 15:30:00 |
North West & Merseyside
| 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 |
| Birkenhead Borough Road Timeseries Graph |
n/m | 45 (1 Low) | n/m | 12 (2 Low) | n/m | 01/05/2026 22:00:00 |
| Blackburn Accrington Road Timeseries Graph |
n/m | 32 (1 Low) | n/m | n/m | n/m | 01/05/2026 10:00:00 |
| Blackburn Audley Park Timeseries Graph |
89 (3 Low) | n/m | n/m | 11 (1 Low) | 25 (2 Low) *2 | 01/05/2026 22:00:00 |
| Blackpool Marton Timeseries Graph |
96 (3 Low) | 29 (1 Low) | n/m | 12 (2 Low) | 25 (2 Low) *2 | 01/05/2026 22:00:00 |
| Blackpool Whitegate Drive Timeseries Graph |
n/m | n/m | n/m | 12 (2 Low) | n/m | 01/05/2026 22:00:00 |
| Bury Whitefield Roadside Timeseries Graph |
n/m | 37 (1 Low) | n/m | n/m | 36 (3 Low) *1 | 01/05/2026 03:00:00 |
| Carlisle Morton A595 Timeseries Graph |
n/m | 26 (1 Low) | n/m | 11 (1 Low) | 25 (2 Low) *1 | 01/05/2026 22:00:00 |
| Crewe Coppenhall Timeseries Graph |
104 (4 Moderate) | 27 (1 Low) | n/m | 12 (2 Low) | 27 (2 Low) *2 | 01/05/2026 22:00:00 |
| Glazebury Timeseries Graph |
93 (3 Low) | 34 (1 Low) | n/m | 11 (1 Low) | 26 (2 Low) *2 | 01/05/2026 22:00:00 |
| Liverpool Speke Timeseries Graph |
102 (4 Moderate) | 47 (1 Low) | 15 (1 Low) | 15 (2 Low) | 30 (2 Low) *1 | 01/05/2026 11:30:00 |
| Liverpool Thirlmere Park Timeseries Graph |
98 (3 Low) | n/m | n/m | 12 (2 Low) | 27 (2 Low) *2 | 01/05/2026 22:00:00 |
| Manchester Piccadilly Timeseries Graph |
83 (3 Low) | 57 (1 Low) | 10 (1 Low) | 14 (2 Low) | 33 (2 Low) *2 | 01/05/2026 07:45:00 |
| Manchester Sharston Timeseries Graph |
93 (3 Low) | 47 (1 Low) | n/m | 10 (1 Low) | 26 (2 Low) *2 | 01/05/2026 22:00:00 |
| Middlewich St Michael's Way Timeseries Graph |
n/m | n/m | n/m | 12 (2 Low) | n/m | 01/05/2026 22:00:00 |
| Preston Timeseries Graph |
91 (3 Low) | 27 (1 Low) | n/m | 12 (2 Low) | 25 (2 Low) *2 | 01/05/2026 22:00:00 |
| Salford Eccles Timeseries Graph |
101 (4 Moderate) | 59 (1 Low) | n/m | 15 (2 Low) | 37 (3 Low) *2 | 01/05/2026 22:00:00 |
| Shaw Crompton Way Timeseries Graph |
n/m | 59 (1 Low) | n/m | n/m | n/m | 01/05/2026 08:00:00 |
| St Helens Linkway Timeseries Graph |
n/m | 52 (1 Low) | n/m | n/m | 27 (2 Low) *1 | 01/05/2026 07:00:00 |
| Tameside A635 Manchester Road Timeseries Graph |
n/m | n/m | n/m | 19 (2 Low) | n/m | 01/05/2026 22:00:00 |
| Warrington Timeseries Graph |
n/m | 35 (1 Low) | n/m | 9 (1 Low) | 29 (2 Low) *1 | 01/05/2026 22:00:00 |
| Widnes Milton Road Timeseries Graph |
n/m | 51 (1 Low) | n/m | n/m | n/m | 01/05/2026 08:00:00 |
| Wigan Centre Timeseries Graph |
90 (3 Low) | n/a | n/m | 14 (2 Low) | 34 (3 Low) *2 | 01/05/2026 22:00:00 |
| Wirral Tranmere Timeseries Graph |
103 (4 Moderate) | 23 (1 Low) | n/m | 11 (1 Low) | 24 (2 Low) *2 | 01/05/2026 22:00:00 |
Northern Ireland
| 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 |
| Armagh Roadside Timeseries Graph |
n/m | 42 (1 Low) | n/m | n/m | 30 (2 Low) *1 | 01/05/2026 15:00:00 |
| Ballymena Antrim Road Timeseries Graph |
n/m | 37 (1 Low) | n/m | n/m | n/m | 01/05/2026 08:00:00 |
| Ballymena Ballykeel Timeseries Graph |
n/m | 25 (1 Low) | 5 (1 Low) | n/m | n/m | 01/05/2026 14:15:00 |
| Belfast Centre Timeseries Graph |
84 (3 Low) | 45 (1 Low) | 2 (1 Low) | 14 (2 Low) | 26 (2 Low) *2 | 30/04/2026 24:00: |
| Belfast Stockman's Lane Timeseries Graph |
n/m | 79 (2 Low) | n/m | n/m | 32 (2 Low) *1 | 01/05/2026 08:00:00 |
| Derry Rosemount Timeseries Graph |
97 (3 Low) | 22 (1 Low) | 3 (1 Low) | 8 (1 Low) | 23 (2 Low) *1 | 30/04/2026 23:30:00 |
| Lough Navar Timeseries Graph |
87 (3 Low) | n/m | n/m | 7 (1 Low) | 14 (1 Low) *2 | 01/05/2026 12:00:00 |
Scottish Borders
| 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 |
| Dumfries Timeseries Graph |
n/m | 51 (1 Low) | n/m | n/m | n/m | 01/05/2026 11:00:00 |
| Eskdalemuir Timeseries Graph |
102 (4 Moderate) | 6 (1 Low) | n/m | n/m | n/m | 01/05/2026 17:00:00 |
| Peebles Timeseries Graph |
97 (3 Low) | 9 (1 Low) | n/m | n/m | n/m | 30/04/2026 23:00:00 |
South East
| 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 |
| Aylesbury A4157 Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | n/m | 01/05/2026 22:00:00 |
| Brighton Preston Park Timeseries Graph |
90 (3 Low) | 23 (1 Low) | n/m | 7 (1 Low) | 19 (2 Low) *2 | 01/05/2026 22:00:00 |
| Chatham Roadside Timeseries Graph |
n/m | 42 (1 Low) | n/m | 8 (1 Low) | 35 (3 Low) *1 | 01/05/2026 01:00:00 |
| Chilbolton Observatory Timeseries Graph |
112 (4 Moderate) | 15 (1 Low) | 3 (1 Low) | 7 (1 Low) | 20 (2 Low) *2 | 01/05/2026 13:30:00 |
| Eastbourne Timeseries Graph |
94 (3 Low) | 29 (1 Low) | n/m | 8 (1 Low) | 20 (2 Low) *2 | 01/05/2026 22:00:00 |
| Farnborough Cherrywood Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 21 (2 Low) *2 | 01/05/2026 17:00:00 |
| Horley Timeseries Graph |
n/m | 23 (1 Low) | n/m | 9 (1 Low) | 24 (2 Low) *2 | 01/05/2026 19:00:00 |
| Lullington Heath Timeseries Graph |
106 (4 Moderate) | 12 (1 Low) | 18 (1 Low) | 7 (1 Low) | 17 (2 Low) *2 | 01/05/2026 19:30:00 |
| Maidstone Upper Stone Street Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 35 (3 Low) *2 | 01/05/2026 22:00:00 |
| Milton Keynes Civic Centre Timeseries Graph |
110 (4 Moderate) | n/m | n/m | 8 (1 Low) | 26 (2 Low) *2 | 01/05/2026 22:00:00 |
| Oxford Centre Roadside Timeseries Graph |
n/m | 49 (1 Low) | n/m | n/m | n/m | 01/05/2026 04:00:00 |
| Oxford St Ebbes Timeseries Graph |
102 (4 Moderate) | 12 (1 Low) | n/m | 7 (1 Low) | 20 (2 Low) *2 | 01/05/2026 22:00:00 |
| Portsmouth Timeseries Graph |
94 (3 Low) | 27 (1 Low) | n/m | 7 (1 Low) | 19 (2 Low) *2 | 01/05/2026 22:00:00 |
| Portsmouth Anglesea Road Timeseries Graph |
n/m | 35 (1 Low) | n/m | 8 (1 Low) | 22 (2 Low) *2 | 01/05/2026 22:00:00 |
| Reading London Road Timeseries Graph |
n/m | 54 (1 Low) | n/m | n/m | 27 (2 Low) *1 | 01/05/2026 07:00:00 |
| Reading New Town Timeseries Graph |
99 (3 Low) | 46 (1 Low) | n/m | 8 (1 Low) | 24 (2 Low) *2 | 01/05/2026 17:00:00 |
| Reading Rose Kiln Lane Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | n/m | 01/05/2026 17:00:00 |
| Rochester Stoke Timeseries Graph |
95 (3 Low) | 31 (1 Low) | 3 (1 Low) | 8 (1 Low) | 25 (2 Low) *2 | 01/05/2026 13:15:00 |
| Slough Windmill Bath Road Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 33 (2 Low) *2 | 01/05/2026 13:00:00 |
| Southampton A33 Timeseries Graph |
n/m | 86 (2 Low) | n/m | 8 (1 Low) | 24 (2 Low) *2 | 01/05/2026 22:00:00 |
| Southampton Centre Timeseries Graph |
98 (3 Low) | 36 (1 Low) | 10 (1 Low) | 8 (1 Low) | 29 (2 Low) *2 | 01/05/2026 12:45:00 |
| Storrington Roadside Timeseries Graph |
n/m | 58 (1 Low) | n/m | 8 (1 Low) | 28 (2 Low) *2 | 01/05/2026 22:00:00 |
| Worthing A27 Roadside Timeseries Graph |
n/m | 34 (1 Low) | n/m | 11 (1 Low) | n/m | 01/05/2026 22:00:00 |
| Worthing East Ten Acres Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 24 (2 Low) *2 | 01/05/2026 22:00:00 |
South Wales
| 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 |
| 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 | 55 (1 Low) | n/m | n/m | 31 (2 Low) *1 | 01/05/2026 09:00:00 |
| Chepstow A48 Timeseries Graph |
n/m | 50 (1 Low) | n/m | 14 (2 Low) | 25 (2 Low) *1 | 01/05/2026 20:00:00 |
| Cwmbran Crownbridge Timeseries Graph |
102 (4 Moderate) | 27 (1 Low) | n/m | n/m | n/m | 30/04/2026 23:00:00 |
| Hafod-yr-ynys Hill Roadside Timeseries Graph |
n/m | 57 (1 Low) | n/m | n/m | n/m | 01/05/2026 21:00:00 |
| Narberth Timeseries Graph |
103 (4 Moderate) | 6 (1 Low) | 2 (1 Low) | 10 (1 Low) | 37 (3 Low) *2 | 01/05/2026 14:15:00 |
| Newport Timeseries Graph |
n/m | 29 (1 Low) | n/m | 9 (1 Low) | 30 (2 Low) *2 | 01/05/2026 22:00:00 |
| Port Talbot Margam Timeseries Graph |
105 (4 Moderate) | 20 (1 Low) | 5 (1 Low) | 8 (1 Low) | 22 (2 Low) *3 | 01/05/2026 06:15:00 |
| Swansea Roadside Timeseries Graph |
n/m | 36 (1 Low) | n/m | 11 (1 Low) | 30 (2 Low) *1 | 01/05/2026 22:00:00 |
South West
| 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 |
| Barnstaple A39 Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 24 (2 Low) *2 | 01/05/2026 22:00:00 |
| Bath A4 Roadside Timeseries Graph |
n/m | n/a | n/m | n/m | n/m | 22/03/2026 17:00:00 |
| Bournemouth Timeseries Graph |
101 (4 Moderate) | 14 (1 Low) | n/m | 11 (1 Low) | n/m | 01/05/2026 22:00:00 |
| Bristol Patchway Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 21 (2 Low) *2 | 01/05/2026 22:00:00 |
| Bristol St Paul's Timeseries Graph |
99 (3 Low) | 35 (1 Low) | n/m | 10 (1 Low) | 25 (2 Low) *1 | 01/05/2026 22:00:00 |
| Bristol Temple Way Timeseries Graph |
n/m | 63 (1 Low) | n/m | 9 (1 Low) | 24 (2 Low) *2 | 01/05/2026 22:00:00 |
| Charlton Mackrell Timeseries Graph |
103 (4 Moderate) | 14 (1 Low) | n/m | 8 (1 Low) | 19 (2 Low) *2 | 01/05/2026 22:00:00 |
| Cheltenham A40 Gloucester Road Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | n/m | 01/05/2026 18:00:00 |
| Christchurch Barrack Road Timeseries Graph |
n/m | 23 (1 Low) | n/m | 8 (1 Low) | n/m | 01/05/2026 22:00:00 |
| Exeter Roadside Timeseries Graph |
103 (4 Moderate) | 44 (1 Low) | n/m | n/m | n/m | 30/04/2026 23:00:00 |
| Gloucester Tredworth Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 27 (2 Low) *2 | 01/05/2026 22:00:00 |
| Honiton Timeseries Graph |
105 (4 Moderate) | 20 (1 Low) | n/m | 10 (1 Low) | 20 (2 Low) *2 | 01/05/2026 22:00:00 |
| Plymouth Centre Timeseries Graph |
89 (3 Low) | 24 (1 Low) | n/m | 21 (2 Low) | 119 (10 Very High) *2 | 01/05/2026 12:00:00 |
| Plymouth Tavistock Road Timeseries Graph |
n/m | 31 (1 Low) | n/m | n/m | n/m | 01/05/2026 08:00:00 |
| Saltash Callington Road Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | 30 (2 Low) *1 | 01/05/2026 22:00:00 |
| Swindon Walcot Timeseries Graph |
102 (4 Moderate) | 20 (1 Low) | n/m | 9 (1 Low) | 22 (2 Low) *2 | 01/05/2026 22:00:00 |
| Yarner Wood Timeseries Graph |
109 (4 Moderate) | 14 (1 Low) | n/m | 8 (1 Low) | 21 (2 Low) *2 | 01/05/2026 22:00:00 |
West Ireland
| 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 |
106 (4 Moderate) | n/m | n/m | n/m | n/m | 01/05/2026 21:00:00 |
West Midlands
| 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 |
| Birmingham A4540 Roadside Timeseries Graph |
95 (3 Low) | 71 (2 Low) | n/m | 10 (1 Low) | 29 (2 Low) *2 | 01/05/2026 22:00:00 |
| Birmingham Hall Green Timeseries Graph |
111 (4 Moderate) | 40 (1 Low) | n/m | 9 (1 Low) | 30 (2 Low) *2 | 01/05/2026 20:00:00 |
| Birmingham Ladywood Timeseries Graph |
76 (3 Low) | 62 (1 Low) | 6 (1 Low) | 9 (1 Low) | 25 (2 Low) *2 | 01/05/2026 02:30:00 |
| Birmingham University Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 25 (2 Low) *2 | 01/05/2026 22:00:00 |
| Burton-on-Trent Horninglow Timeseries Graph |
107 (4 Moderate) | 59 (1 Low) | n/m | 11 (1 Low) | 27 (2 Low) *2 | 01/05/2026 22:00:00 |
| Cannock A5190 Roadside Timeseries Graph |
n/m | 42 (1 Low) | n/m | 13 (2 Low) | n/m | 01/05/2026 22:00:00 |
| Coventry Allesley Timeseries Graph |
99 (3 Low) | 15 (1 Low) | n/m | 8 (1 Low) | 24 (2 Low) *2 | 01/05/2026 22:00:00 |
| Coventry Binley Road Timeseries Graph |
n/m | 44 (1 Low) | n/m | 9 (1 Low) | 25 (2 Low) *2 | 01/05/2026 22:00:00 |
| Leamington Spa Timeseries Graph |
113 (4 Moderate) | 21 (1 Low) | n/m | 8 (1 Low) | 23 (2 Low) *2 | 01/05/2026 22:00:00 |
| Leamington Spa Rugby Road Timeseries Graph |
n/m | 26 (1 Low) | n/m | 8 (1 Low) | 20 (2 Low) *2 | 01/05/2026 22:00:00 |
| Leominster Timeseries Graph |
111 (4 Moderate) | 21 (1 Low) | n/m | n/m | n/m | 30/04/2026 23:00:00 |
| Oldbury Birmingham Road Timeseries Graph |
n/m | 70 (2 Low) | n/m | 11 (1 Low) | 29 (2 Low) *2 | 01/05/2026 22:00:00 |
| Shrewsbury Underdale Timeseries Graph |
n/m | n/m | n/m | 15 (2 Low) | 30 (2 Low) *2 | 01/05/2026 22:00:00 |
| Stoke-on-Trent A50 Roadside Timeseries Graph |
n/m | 72 (2 Low) | n/m | 15 (2 Low) | 33 (2 Low) *2 | 01/05/2026 22:00:00 |
| Stoke-on-Trent Centre Timeseries Graph |
98 (3 Low) | 29 (1 Low) | n/m | 14 (2 Low) | 33 (2 Low) *2 | 01/05/2026 22:00:00 |
| Telford Hollinswood Timeseries Graph |
113 (4 Moderate) | 34 (1 Low) | n/m | 11 (1 Low) | 26 (2 Low) *2 | 01/05/2026 22:00:00 |
| Walsall Caldmore Timeseries Graph |
n/m | n/m | n/m | n/a | n/a | 01/05/2026 01:00:00 |
| Walsall Woodlands Timeseries Graph |
109 (4 Moderate) | 37 (1 Low) | n/m | n/m | n/m | 30/04/2026 23:00:00 |
| West Bromwich Kenrick Park Timeseries Graph |
100 (3 Low) | 57 (1 Low) | n/m | n/m | n/m | 30/04/2026 22:00:00 |
| Worcester Tolladine Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 23 (2 Low) *2 | 01/05/2026 22:00:00 |
Yorkshire & Humberside
| 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 |
| Barnsley Gawber Timeseries Graph |
104 (4 Moderate) | 33 (1 Low) | 7 (1 Low) | 11 (1 Low) | 30 (2 Low) *2 | 01/05/2026 09:00:00 |
| Bradford Mayo Avenue Timeseries Graph |
n/m | 64 (1 Low) | n/m | n/m | n/m | 01/05/2026 09:00:00 |
| Bradford Shipley Airedale Road Timeseries Graph |
n/m | n/m | n/m | 14 (2 Low) | 44 (3 Low) *2 | 01/05/2026 22:00:00 |
| Dewsbury Ashworth Grange Timeseries Graph |
91 (3 Low) | 41 (1 Low) | n/m | 13 (2 Low) | 30 (2 Low) *2 | 01/05/2026 22:00:00 |
| Doncaster A630 Cleveland Street Timeseries Graph |
n/m | 56 (1 Low) | n/m | 11 (1 Low) | n/m | 01/05/2026 22:00:00 |
| Harrogate Woodlands Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 24 (2 Low) *2 | 01/05/2026 22:00:00 |
| High Muffles Timeseries Graph |
106 (4 Moderate) | 7 (1 Low) | n/m | 8 (1 Low) | 23 (2 Low) *2 | 01/05/2026 22:00:00 |
| Hull Freetown Timeseries Graph |
94 (3 Low) | 41 (1 Low) | 3 (1 Low) | 11 (1 Low) | 29 (2 Low) *2 | 01/05/2026 08:00:00 |
| Hull Holderness Road Timeseries Graph |
n/m | 47 (1 Low) | n/m | 9 (1 Low) | 22 (2 Low) *2 | 01/05/2026 22:00:00 |
| Immingham Woodlands Avenue Timeseries Graph |
98 (3 Low) | 37 (1 Low) | n/m | 10 (1 Low) | 25 (2 Low) *2 | 01/05/2026 22:00:00 |
| Leeds Centre Timeseries Graph |
92 (3 Low) | 48 (1 Low) | 7 (1 Low) | 13 (2 Low) | 31 (2 Low) *2 | 01/05/2026 09:45:00 |
| Leeds Headingley Kerbside Timeseries Graph |
n/m | 56 (1 Low) | n/m | 16 (2 Low) | 37 (3 Low) *1 | 01/05/2026 22:00:00 |
| Rotherham East Dene Timeseries Graph |
n/m | n/m | n/m | 13 (2 Low) | 29 (2 Low) *2 | 01/05/2026 22:00:00 |
| Scunthorpe Town Timeseries Graph |
n/m | 49 (1 Low) | 6 (1 Low) | 13 (2 Low) | 49 (3 Low) *1 | 01/05/2026 20:45:00 |
| Sheffield Barnsley Road Timeseries Graph |
n/m | 77 (2 Low) | n/m | 16 (2 Low) | n/m | 01/05/2026 22:00:00 |
| Sheffield Devonshire Green Timeseries Graph |
113 (4 Moderate) | 48 (1 Low) | n/m | 12 (2 Low) | 29 (2 Low) *2 | 01/05/2026 22:00:00 |
| Sheffield Tinsley Timeseries Graph |
97 (3 Low) | 46 (1 Low) | n/m | 12 (2 Low) | 29 (2 Low) *2 | 01/05/2026 22:00:00 |
| Wakefield Alverthorpe Timeseries Graph |
n/m | n/m | n/m | 12 (2 Low) | 30 (2 Low) *2 | 01/05/2026 22:00:00 |
| York Bootham Timeseries Graph |
100 (3 Low) | 20 (1 Low) | n/m | 11 (1 Low) | 28 (2 Low) *1 | 01/05/2026 22:00:00 |
| York Fishergate Timeseries Graph |
n/m | 29 (1 Low) | n/m | 8 (1 Low) | 34 (3 Low) *1 | 01/05/2026 22:00:00 |
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