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 9pm Mon 21st Sep 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 |
58 (2 Low) | n/m | n/m | 4 (1 Low) | 8 (1 Low) *2 | 21/09/2026 11:00:00 |
| Bush Estate Timeseries Graph |
65 (2 Low) | 3 (1 Low) | n/m | n/m | n/m | 20/09/2026 22:00:00 |
| Dumbarton Roadside Timeseries Graph |
n/m | 33 (1 Low) | n/m | n/m | n/m | 21/09/2026 12:00:00 |
| Edinburgh Nicolson Street Timeseries Graph |
n/m | 65 (1 Low) | n/m | n/m | n/m | 21/09/2026 10:00:00 |
| Edinburgh St Leonards Timeseries Graph |
59 (2 Low) | 33 (1 Low) | 2 (1 Low) | 6 (1 Low) | 12 (1 Low) *2 | 21/09/2026 10:00:00 |
| Glasgow Great Western Road Timeseries Graph |
n/m | 37 (1 Low) | n/m | n/m | n/m | 21/09/2026 11:00:00 |
| Glasgow High Street Timeseries Graph |
n/m | 34 (1 Low) | n/m | 8 (1 Low) | 16 (1 Low) *2 | 21/09/2026 20:00:00 |
| Glasgow Kerbside Timeseries Graph |
n/m | 63 (1 Low) | n/m | n/m | n/m | 21/09/2026 08:00:00 |
| Glasgow Townhead Timeseries Graph |
53 (2 Low) | 38 (1 Low) | n/m | 6 (1 Low) | 13 (1 Low) *2 | 21/09/2026 20:00:00 |
| Grangemouth Timeseries Graph |
n/m | 22 (1 Low) | 8 (1 Low) | 9 (1 Low) | 15 (1 Low) *1 | 20/09/2026 21:30:00 |
| Grangemouth Moray Timeseries Graph |
n/m | 24 (1 Low) | n/m | n/m | n/m | 21/09/2026 08:00:00 |
| Greenock A8 Roadside Timeseries Graph |
n/m | 46 (1 Low) | n/m | 8 (1 Low) | 15 (1 Low) *2 | 21/09/2026 19:00:00 |
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 |
61 (2 Low) | 25 (1 Low) | n/m | 6 (1 Low) | 12 (1 Low) *2 | 21/09/2026 01:00:00 |
| Chesterfield Roadside Timeseries Graph |
n/m | 34 (1 Low) | n/m | 6 (1 Low) | 13 (1 Low) *2 | 21/09/2026 01:00:00 |
| Derby St Alkmund's Way Timeseries Graph |
n/m | 57 (1 Low) | n/m | 8 (1 Low) | n/m | 21/09/2026 15:00:00 |
| Derby Stockbrook Park Timeseries Graph |
58 (2 Low) | n/m | n/m | 8 (1 Low) | 14 (1 Low) *2 | 21/09/2026 14:00:00 |
| Ladybower Timeseries Graph |
75 (3 Low) | 7 (1 Low) | 2 (1 Low) | 6 (1 Low) | 12 (1 Low) *2 | 21/09/2026 09:45:00 |
| Leicester A594 Roadside Timeseries Graph |
n/m | 65 (1 Low) | n/m | 8 (1 Low) | 18 (2 Low) *2 | 21/09/2026 16:00:00 |
| Leicester University Timeseries Graph |
56 (2 Low) | 52 (1 Low) | n/m | 7 (1 Low) | 13 (1 Low) *2 | 21/09/2026 15:00:00 |
| Lincoln Canwick Road Timeseries Graph |
n/m | 52 (1 Low) | n/m | n/m | n/m | 21/09/2026 08:00:00 |
| Loughborough Thorpe Acre Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | 16 (1 Low) *2 | 21/09/2026 12:00:00 |
| Mansfield Ladybrook Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 13 (1 Low) *2 | 21/09/2026 16:00:00 |
| Northampton Spring Park Timeseries Graph |
68 (3 Low) | 28 (1 Low) | n/m | 8 (1 Low) | n/m | 21/09/2026 01:00:00 |
| Nottingham Bilborough Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | 16 (1 Low) *2 | 21/09/2026 20:00:00 |
| Nottingham Kenmore Gardens Timeseries Graph |
56 (2 Low) | 43 (1 Low) | 2 (1 Low) | 9 (1 Low) | 18 (2 Low) *2 | 21/09/2026 12:30:00 |
| Nottingham Western Boulevard Timeseries Graph |
n/m | 40 (1 Low) | n/m | 8 (1 Low) | 16 (1 Low) *2 | 21/09/2026 16:00:00 |
| Tallington Timeseries Graph |
79 (3 Low) | n/m | n/m | 6 (1 Low) | 12 (1 Low) *2 | 21/09/2026 16:00:00 |
| Toft Newton Timeseries Graph |
75 (3 Low) | 7 (1 Low) | n/m | 6 (1 Low) | 12 (1 Low) *2 | 21/09/2026 17:00:00 |
| Wigston Centre Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 14 (1 Low) *2 | 21/09/2026 15:00:00 |
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 | 42 (1 Low) | n/m | 7 (1 Low) | 13 (1 Low) *2 | 21/09/2026 13:00:00 |
| Cambridge King's Hedges Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 13 (1 Low) *2 | 21/09/2026 01:00:00 |
| Cambridge Roadside Timeseries Graph |
n/m | 64 (1 Low) | n/m | n/m | n/m | 21/09/2026 21:00:00 |
| Luton A505 Roadside Timeseries Graph |
n/m | 77 (2 Low) | n/m | 8 (1 Low) | n/m | 21/09/2026 19:00:00 |
| Norwich Lakenfields Timeseries Graph |
73 (3 Low) | 16 (1 Low) | n/m | 6 (1 Low) | 12 (1 Low) *2 | 21/09/2026 20:00:00 |
| Peterborough Garton End Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 14 (1 Low) *2 | 21/09/2026 15:00:00 |
| Sibton Timeseries Graph |
75 (3 Low) | n/m | n/m | 6 (1 Low) | 12 (1 Low) *2 | 21/09/2026 21:00:00 |
| Southend Shoeburyness Timeseries Graph |
n/m | n/m | n/m | n/a | n/a | 09/09/2026 01:00:00 |
| Southend-on-Sea Timeseries Graph |
64 (2 Low) | 27 (1 Low) | n/m | 7 (1 Low) | 13 (1 Low) *2 | 21/09/2026 21:00:00 |
| St Osyth Timeseries Graph |
83 (3 Low) | 15 (1 Low) | n/m | 7 (1 Low) | 14 (1 Low) *2 | 21/09/2026 21:00:00 |
| Stanford-le-Hope Roadside Timeseries Graph |
n/m | 49 (1 Low) | n/m | 14 (2 Low) | 21 (2 Low) *1 | 21/09/2026 21:00:00 |
| Stevenage St Georges Way South Timeseries Graph |
n/m | n/m | n/m | n/a | n/m | 04/09/2026 01:00:00 |
| Thurrock Timeseries Graph |
60 (2 Low) | 104 (2 Low) | 6 (1 Low) | 9 (1 Low) | 19 (2 Low) *2 | 21/09/2026 07:00:00 |
| Weybourne Timeseries Graph |
n/a | n/m | n/m | 8 (1 Low) | 19 (2 Low) *2 | 21/09/2026 21:00:00 |
| Wicken Fen Timeseries Graph |
78 (3 Low) | 12 (1 Low) | 2 (1 Low) | 6 (1 Low) | 13 (1 Low) *2 | 21/09/2026 18:15:00 |
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 | 59 (1 Low) | n/m | 13 (2 Low) | 28 (2 Low) *1 | 21/09/2026 19:00:00 |
| Ealing Horn Lane Timeseries Graph |
n/m | n/m | n/m | n/m | 50 (3 Low) *1 | 21/09/2026 21:00:00 |
| Haringey Roadside Timeseries Graph |
n/m | 55 (1 Low) | n/m | n/m | n/m | 21/09/2026 21:00:00 |
| London A406 N Circular Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | n/m | 21/09/2026 13:00:00 |
| London Bexley Timeseries Graph |
n/m | 54 (1 Low) | n/m | 8 (1 Low) | 14 (1 Low) *2 | 21/09/2026 21:00:00 |
| London Bloomsbury Timeseries Graph |
61 (2 Low) | 60 (1 Low) | 2 (1 Low) | 7 (1 Low) | 15 (1 Low) *2 | 21/09/2026 08:15:00 |
| London Farringdon Street Timeseries Graph |
n/m | 58 (1 Low) | n/m | 10 (1 Low) | n/m | 21/09/2026 21:00:00 |
| London Haringey Priory Park South Timeseries Graph |
62 (2 Low) | 62 (1 Low) | n/m | 6 (1 Low) | 10 (1 Low) *2 | 21/09/2026 09:00:00 |
| London Harlington Timeseries Graph |
71 (3 Low) | 48 (1 Low) | n/m | 7 (1 Low) | 18 (2 Low) *2 | 21/09/2026 19:00:00 |
| London Hillingdon Timeseries Graph |
75 (3 Low) | 59 (1 Low) | n/m | 9 (1 Low) | 17 (2 Low) *2 | 21/09/2026 15:00:00 |
| London Honor Oak Park Timeseries Graph |
78 (3 Low) | n/m | n/m | 8 (1 Low) | 14 (1 Low) *2 | 21/09/2026 17:00:00 |
| London Marylebone Road Timeseries Graph |
63 (2 Low) | 62 (1 Low) | 7 (1 Low) | 12 (2 Low) | 24 (2 Low) *1 | 21/09/2026 09:15:00 |
| London N. Kensington Timeseries Graph |
72 (3 Low) | 50 (1 Low) | 2 (1 Low) | 8 (1 Low) | 14 (1 Low) *2 | 21/09/2026 09:00:00 |
| London Norbury Manor School Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | 14 (1 Low) *2 | 21/09/2026 21:00:00 |
| London Teddington Bushy Park Timeseries Graph |
n/m | n/m | n/m | 6 (1 Low) | 13 (1 Low) *2 | 21/09/2026 20:00:00 |
| London Westminster Timeseries Graph |
65 (2 Low) | 52 (1 Low) | n/m | n/m | n/m | 21/09/2026 19:00:00 |
| Southwark A2 Old Kent Road Timeseries Graph |
n/m | 65 (1 Low) | n/m | n/m | 28 (2 Low) *1 | 21/09/2026 21:00:00 |
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 |
61 (2 Low) | 15 (1 Low) | n/m | n/m | n/m | 20/09/2026 22:00:00 |
| Inverness Timeseries Graph |
n/m | 23 (1 Low) | n/m | 4 (1 Low) | 8 (1 Low) *2 | 21/09/2026 09:00:00 |
| Lerwick Timeseries Graph |
69 (3 Low) | n/m | n/m | n/m | n/m | 21/09/2026 18:00:00 |
| Strathvaich Timeseries Graph |
70 (3 Low) | n/m | n/m | n/m | n/m | 20/09/2026 22:00:00 |
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 | 5 (1 Low) | 11 (1 Low) *2 | 21/09/2026 14:00:00 |
| Hartlepool St Abbs Walk Timeseries Graph |
57 (2 Low) | 16 (1 Low) | n/m | 5 (1 Low) | 9 (1 Low) *2 | 20/09/2026 11:00:00 |
| Kielder Water Timeseries Graph |
53 (2 Low) | n/m | n/m | 5 (1 Low) | 10 (1 Low) *2 | 21/09/2026 11:00:00 |
| Middlesbrough Timeseries Graph |
50 (2 Low) | 28 (1 Low) | 1 (1 Low) | 4 (1 Low) | 14 (1 Low) *1 | 21/09/2026 07:30:00 |
| Newcastle Centre Timeseries Graph |
55 (2 Low) | 40 (1 Low) | n/m | 8 (1 Low) | 19 (2 Low) *1 | 21/09/2026 14:00:00 |
| Newcastle Cradlewell Roadside Timeseries Graph |
n/m | 66 (1 Low) | n/m | 7 (1 Low) | 16 (1 Low) *2 | 21/09/2026 13:00:00 |
| North Shields Chirton Timeseries Graph |
n/m | n/m | n/m | 6 (1 Low) | 11 (1 Low) *2 | 21/09/2026 14:00:00 |
| Redcar Milford Walk Timeseries Graph |
n/m | n/m | n/m | 6 (1 Low) | 12 (1 Low) *2 | 21/09/2026 15:00:00 |
| Stockton-on-Tees A1305 Roadside Timeseries Graph |
n/m | 22 (1 Low) | n/m | 6 (1 Low) | n/m | 21/09/2026 14:00:00 |
| Stockton-on-Tees Eaglescliffe Timeseries Graph |
n/m | 7 (1 Low) | n/m | 8 (1 Low) | 14 (1 Low) *1 | 21/09/2026 14:00:00 |
| Sunderland Silksworth Timeseries Graph |
55 (2 Low) | 24 (1 Low) | n/m | 6 (1 Low) | 13 (1 Low) *2 | 21/09/2026 14:00:00 |
| Sunderland Wessington Way Timeseries Graph |
n/m | 24 (1 Low) | n/m | 5 (1 Low) | n/m | 21/09/2026 14:00:00 |
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 |
62 (2 Low) | 34 (1 Low) | n/m | 3 (1 Low) | 8 (1 Low) *2 | 21/09/2026 18:00:00 |
| Aberdeen Wellington Road Timeseries Graph |
n/m | 43 (1 Low) | n/m | n/m | n/m | 21/09/2026 08:00:00 |
| Dundee Mains Loan Timeseries Graph |
n/m | 9 (1 Low) | n/m | n/m | n/m | 21/09/2026 10:00:00 |
| Perth Glasgow Road Timeseries Graph |
n/m | 28 (1 Low) | n/m | n/m | n/m | 21/09/2026 09:00:00 |
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 |
72 (3 Low) | 3 (1 Low) | n/m | n/m | n/m | 20/09/2026 22:00:00 |
| Wrexham Timeseries Graph |
n/m | 43 (1 Low) | 3 (1 Low) | 6 (1 Low) | 13 (1 Low) *2 | 21/09/2026 08:45:00 |
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 | 44 (1 Low) | n/m | 8 (1 Low) | n/m | 21/09/2026 01:00:00 |
| Blackburn Accrington Road Timeseries Graph |
n/m | 39 (1 Low) | n/m | n/m | n/m | 21/09/2026 18:00:00 |
| Blackburn Audley Park Timeseries Graph |
61 (2 Low) | n/m | n/m | 7 (1 Low) | 15 (1 Low) *2 | 21/09/2026 21:00:00 |
| Blackpool Marton Timeseries Graph |
69 (3 Low) | 27 (1 Low) | n/m | 8 (1 Low) | 17 (2 Low) *2 | 21/09/2026 01:00:00 |
| Blackpool Whitegate Drive Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | n/m | 21/09/2026 01:00:00 |
| Bury Whitefield Roadside Timeseries Graph |
n/m | 35 (1 Low) | n/m | n/m | 20 (2 Low) *1 | 21/09/2026 21:00:00 |
| Carlisle Morton A595 Timeseries Graph |
n/m | 21 (1 Low) | n/m | 9 (1 Low) | 14 (1 Low) *1 | 21/09/2026 12:00:00 |
| Crewe Coppenhall Timeseries Graph |
60 (2 Low) | 23 (1 Low) | n/m | 7 (1 Low) | 13 (1 Low) *2 | 21/09/2026 08:00:00 |
| Glazebury Timeseries Graph |
59 (2 Low) | 25 (1 Low) | n/m | 7 (1 Low) | 13 (1 Low) *2 | 21/09/2026 21:00:00 |
| Liverpool Speke Timeseries Graph |
61 (2 Low) | 43 (1 Low) | 19 (1 Low) | 9 (1 Low) | 21 (2 Low) *1 | 21/09/2026 11:30:00 |
| Liverpool Thirlmere Park Timeseries Graph |
62 (2 Low) | n/m | n/m | 7 (1 Low) | 15 (1 Low) *2 | 21/09/2026 01:00:00 |
| Manchester Piccadilly Timeseries Graph |
52 (2 Low) | 48 (1 Low) | 4 (1 Low) | 10 (1 Low) | 22 (2 Low) *2 | 21/09/2026 19:15:00 |
| Manchester Sharston Timeseries Graph |
50 (2 Low) | 50 (1 Low) | n/m | 7 (1 Low) | 15 (1 Low) *2 | 21/09/2026 02:00:00 |
| Middlewich St Michael's Way Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | n/m | 21/09/2026 21:00:00 |
| Preston Timeseries Graph |
56 (2 Low) | 42 (1 Low) | n/m | 8 (1 Low) | 17 (2 Low) *2 | 21/09/2026 17:00:00 |
| Rochdale Belfield Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 17 (2 Low) *2 | 21/09/2026 21:00:00 |
| Salford Eccles Timeseries Graph |
61 (2 Low) | 43 (1 Low) | n/m | 8 (1 Low) | 17 (2 Low) *2 | 21/09/2026 19:00:00 |
| Shaw Crompton Way Timeseries Graph |
n/m | 41 (1 Low) | n/m | n/m | n/m | 21/09/2026 09:00:00 |
| St Helens Linkway Timeseries Graph |
n/m | 31 (1 Low) | n/m | n/m | 20 (2 Low) *1 | 21/09/2026 15:00:00 |
| Tameside A635 Manchester Road Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | n/m | 21/09/2026 21:00:00 |
| Warrington St. Peter's Park Timeseries Graph |
n/m | 48 (1 Low) | n/m | 7 (1 Low) | n/m | 21/09/2026 01:00:00 |
| Widnes Milton Road Timeseries Graph |
n/m | 51 (1 Low) | n/m | n/m | n/m | 21/09/2026 19:00:00 |
| Wigan Centre Timeseries Graph |
58 (2 Low) | 27 (1 Low) | n/m | 9 (1 Low) | 19 (2 Low) *2 | 21/09/2026 21:00:00 |
| Wirral Tranmere Timeseries Graph |
60 (2 Low) | 41 (1 Low) | n/m | 7 (1 Low) | 15 (1 Low) *2 | 21/09/2026 01:00:00 |
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 | 55 (1 Low) | n/m | n/m | 20 (2 Low) *1 | 21/09/2026 20:00:00 |
| Ballymena Antrim Road Timeseries Graph |
n/m | 29 (1 Low) | n/m | n/m | n/m | 21/09/2026 09:00:00 |
| Ballymena Ballykeel Timeseries Graph |
n/m | 26 (1 Low) | 4 (1 Low) | n/m | n/m | 21/09/2026 09:00:00 |
| Belfast Centre Timeseries Graph |
57 (2 Low) | 37 (1 Low) | 2 (1 Low) | 9 (1 Low) | 17 (2 Low) *2 | 21/09/2026 17:00:00 |
| Belfast Stockman's Lane Timeseries Graph |
n/m | 54 (1 Low) | n/m | n/m | 19 (2 Low) *1 | 21/09/2026 09:00:00 |
| Derry Rosemount Timeseries Graph |
53 (2 Low) | 29 (1 Low) | 2 (1 Low) | 5 (1 Low) | 18 (2 Low) *1 | 20/09/2026 24:15: |
| Lough Navar Timeseries Graph |
42 (2 Low) | n/m | n/m | 6 (1 Low) | 13 (1 Low) *2 | 21/09/2026 01:00:00 |
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 | 33 (1 Low) | n/m | n/m | n/m | 21/09/2026 10:00:00 |
| Eskdalemuir Timeseries Graph |
55 (2 Low) | 3 (1 Low) | n/m | n/m | n/m | 20/09/2026 22:00:00 |
| Peebles Timeseries Graph |
60 (2 Low) | 20 (1 Low) | n/m | n/m | n/m | 20/09/2026 22:00:00 |
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 | 21/09/2026 01:00:00 |
| Brighton Preston Park Timeseries Graph |
84 (3 Low) | 37 (1 Low) | n/m | 7 (1 Low) | 11 (1 Low) *2 | 21/09/2026 21:00:00 |
| Chatham Roadside Timeseries Graph |
n/m | 43 (1 Low) | n/m | 8 (1 Low) | 18 (2 Low) *1 | 21/09/2026 21:00:00 |
| Chilbolton Observatory Timeseries Graph |
78 (3 Low) | 20 (1 Low) | 1 (1 Low) | 7 (1 Low) | 12 (1 Low) *2 | 20/09/2026 24:15: |
| Eastbourne Timeseries Graph |
74 (3 Low) | 23 (1 Low) | n/m | 7 (1 Low) | 11 (1 Low) *2 | 21/09/2026 19:00:00 |
| Farnborough Cherrywood Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 12 (1 Low) *2 | 21/09/2026 12:00:00 |
| Horley Timeseries Graph |
n/m | 69 (2 Low) | n/m | 9 (1 Low) | 15 (1 Low) *2 | 21/09/2026 21:00:00 |
| Lullington Heath Timeseries Graph |
83 (3 Low) | 14 (1 Low) | 2 (1 Low) | 5 (1 Low) | 9 (1 Low) *2 | 21/09/2026 02:30:00 |
| Maidstone Upper Stone Street Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 16 (1 Low) *2 | 21/09/2026 16:00:00 |
| Milton Keynes Civic Centre Timeseries Graph |
69 (3 Low) | n/m | n/m | 7 (1 Low) | 13 (1 Low) *2 | 21/09/2026 01:00:00 |
| Oxford Centre Roadside Timeseries Graph |
n/m | 58 (1 Low) | n/m | n/m | n/m | 21/09/2026 21:00:00 |
| Oxford St Ebbes Timeseries Graph |
66 (2 Low) | 53 (1 Low) | n/m | 6 (1 Low) | 11 (1 Low) *2 | 21/09/2026 01:00:00 |
| Portsmouth Timeseries Graph |
69 (3 Low) | 41 (1 Low) | n/m | 6 (1 Low) | 12 (1 Low) *2 | 21/09/2026 20:00:00 |
| Portsmouth Anglesea Road Timeseries Graph |
n/m | 55 (1 Low) | n/m | 7 (1 Low) | 14 (1 Low) *2 | 21/09/2026 20:00:00 |
| Reading London Road Timeseries Graph |
n/m | 46 (1 Low) | n/m | n/m | 19 (2 Low) *1 | 20/09/2026 22:00:00 |
| Reading New Town Timeseries Graph |
69 (3 Low) | 56 (1 Low) | n/m | 7 (1 Low) | 12 (1 Low) *2 | 21/09/2026 12:00:00 |
| Reading Rose Kiln Lane Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | n/m | 21/09/2026 13:00:00 |
| Rochester Stoke Timeseries Graph |
71 (3 Low) | 43 (1 Low) | 6 (1 Low) | 10 (1 Low) | 17 (2 Low) *2 | 21/09/2026 10:00:00 |
| Slough Windmill Bath Road Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 16 (1 Low) *2 | 21/09/2026 13:00:00 |
| Southampton A33 Timeseries Graph |
n/m | 52 (1 Low) | n/m | 7 (1 Low) | 13 (1 Low) *2 | 21/09/2026 14:00:00 |
| Southampton Centre Timeseries Graph |
59 (2 Low) | 44 (1 Low) | 3 (1 Low) | 8 (1 Low) | 15 (1 Low) *2 | 21/09/2026 08:45:00 |
| Storrington Roadside Timeseries Graph |
n/m | 46 (1 Low) | n/m | 6 (1 Low) | 12 (1 Low) *2 | 21/09/2026 19:00:00 |
| Worthing A27 Roadside Timeseries Graph |
n/m | 43 (1 Low) | n/m | 9 (1 Low) | n/m | 21/09/2026 21:00:00 |
| Worthing East Ten Acres Timeseries Graph |
n/m | n/m | n/m | 6 (1 Low) | 11 (1 Low) *2 | 21/09/2026 21:00:00 |
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 |
61 (2 Low) | 30 (1 Low) | 2 (1 Low) | 9 (1 Low) | 19 (2 Low) *1 | 21/09/2026 09:15:00 |
| Cardiff Newport Road Timeseries Graph |
n/m | 38 (1 Low) | n/m | n/m | 21 (2 Low) *1 | 21/09/2026 10:00:00 |
| Chepstow A48 Timeseries Graph |
n/m | 49 (1 Low) | n/m | 7 (1 Low) | 14 (1 Low) *1 | 21/09/2026 01:00:00 |
| Cwmbran Crownbridge Timeseries Graph |
63 (2 Low) | 29 (1 Low) | n/m | n/m | n/m | 21/09/2026 19:00:00 |
| Hafod-yr-ynys Hill Roadside Timeseries Graph |
n/m | 25 (1 Low) | n/m | n/m | n/m | 21/09/2026 10:00:00 |
| Narberth Timeseries Graph |
56 (2 Low) | 10 (1 Low) | 1 (1 Low) | 7 (1 Low) | 16 (1 Low) *2 | 21/09/2026 02:30:00 |
| Newport Timeseries Graph |
n/m | 24 (1 Low) | n/m | 7 (1 Low) | 14 (1 Low) *2 | 21/09/2026 01:00:00 |
| Port Talbot Margam Timeseries Graph |
66 (2 Low) | 30 (1 Low) | 2 (1 Low) | 8 (1 Low) | 23 (2 Low) *3 | 20/09/2026 24:45: |
| Swansea Roadside Timeseries Graph |
n/m | 32 (1 Low) | n/m | 12 (2 Low) | 22 (2 Low) *1 | 21/09/2026 01:00:00 |
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 | 7 (1 Low) | 15 (1 Low) *2 | 21/09/2026 01:00:00 |
| Bath A4 Roadside Timeseries Graph |
n/m | 38 (1 Low) | n/m | n/m | n/m | 21/09/2026 19:00:00 |
| Bournemouth Timeseries Graph |
68 (3 Low) | 19 (1 Low) | n/m | 8 (1 Low) | n/m | 21/09/2026 17:00:00 |
| Bournemouth Bourne Valley Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | 14 (1 Low) *2 | 21/09/2026 13:00:00 |
| Bridgwater A372 Westonzoyland Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | n/m | 21/09/2026 05:00:00 |
| Bristol Patchway Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 17 (2 Low) *2 | 21/09/2026 14:00:00 |
| Bristol St Paul's Timeseries Graph |
60 (2 Low) | 48 (1 Low) | n/m | 9 (1 Low) | 22 (2 Low) *1 | 21/09/2026 14:00:00 |
| Bristol Temple Way Timeseries Graph |
n/m | 51 (1 Low) | n/m | 9 (1 Low) | 19 (2 Low) *2 | 21/09/2026 11:00:00 |
| Charlton Mackrell Timeseries Graph |
69 (3 Low) | 13 (1 Low) | n/m | 7 (1 Low) | 14 (1 Low) *2 | 21/09/2026 11:00:00 |
| Cheltenham A40 Gloucester Road Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | n/m | 21/09/2026 11:00:00 |
| Christchurch Barrack Road Timeseries Graph |
n/m | 30 (1 Low) | n/m | 8 (1 Low) | n/m | 21/09/2026 15:00:00 |
| Exeter Roadside Timeseries Graph |
49 (2 Low) | 36 (1 Low) | n/m | n/m | n/m | 20/09/2026 22:00:00 |
| Gloucester Tredworth Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 15 (1 Low) *2 | 21/09/2026 12:00:00 |
| Honiton Timeseries Graph |
58 (2 Low) | 19 (1 Low) | n/m | 6 (1 Low) | 11 (1 Low) *2 | 21/09/2026 08:00:00 |
| Plymouth Centre Timeseries Graph |
47 (2 Low) | 38 (1 Low) | n/m | 7 (1 Low) | 15 (1 Low) *2 | 21/09/2026 15:00:00 |
| Plymouth Tavistock Road Timeseries Graph |
n/m | 37 (1 Low) | n/m | n/m | n/m | 21/09/2026 07:00:00 |
| Saltash Callington Road Timeseries Graph |
n/m | n/m | n/m | 4 (1 Low) | 16 (1 Low) *1 | 21/09/2026 11:00:00 |
| Swindon Walcot Timeseries Graph |
69 (3 Low) | 33 (1 Low) | n/m | 7 (1 Low) | 13 (1 Low) *2 | 21/09/2026 03:00:00 |
| Yarner Wood Timeseries Graph |
44 (2 Low) | 7 (1 Low) | n/m | 5 (1 Low) | 10 (1 Low) *2 | 21/09/2026 03:00:00 |
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 |
68 (3 Low) | n/m | n/m | n/m | n/m | 21/09/2026 10:00:00 |
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 |
| Bedworth Collycroft Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 15 (1 Low) *2 | 21/09/2026 16:00:00 |
| Birmingham A4540 Roadside Timeseries Graph |
50 (2 Low) | 64 (1 Low) | n/m | 8 (1 Low) | 17 (2 Low) *2 | 21/09/2026 20:00:00 |
| Birmingham Hall Green Timeseries Graph |
70 (3 Low) | 40 (1 Low) | n/m | 8 (1 Low) | 15 (1 Low) *2 | 21/09/2026 14:00:00 |
| Birmingham Ladywood Timeseries Graph |
33 (1 Low) | 46 (1 Low) | 2 (1 Low) | 8 (1 Low) | 15 (1 Low) *2 | 21/09/2026 21:00:00 |
| Birmingham University Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 12 (1 Low) *2 | 21/09/2026 16:00:00 |
| Burton-on-Trent Horninglow Timeseries Graph |
60 (2 Low) | 43 (1 Low) | n/m | 8 (1 Low) | 15 (1 Low) *2 | 21/09/2026 14:00:00 |
| Cannock A5190 Roadside Timeseries Graph |
n/m | 47 (1 Low) | n/m | 7 (1 Low) | n/m | 21/09/2026 14:00:00 |
| Coventry Allesley Timeseries Graph |
60 (2 Low) | 47 (1 Low) | n/m | 6 (1 Low) | 12 (1 Low) *2 | 21/09/2026 18:00:00 |
| Coventry Binley Road Timeseries Graph |
n/m | 62 (1 Low) | n/m | 7 (1 Low) | 13 (1 Low) *2 | 21/09/2026 17:00:00 |
| Leamington Spa Timeseries Graph |
71 (3 Low) | 36 (1 Low) | n/m | 7 (1 Low) | 13 (1 Low) *2 | 21/09/2026 01:00:00 |
| Leamington Spa Rugby Road Timeseries Graph |
n/m | 39 (1 Low) | n/m | 6 (1 Low) | 12 (1 Low) *2 | 21/09/2026 01:00:00 |
| Leominster Timeseries Graph |
60 (2 Low) | 16 (1 Low) | n/m | n/m | n/m | 20/09/2026 22:00:00 |
| Oldbury Birmingham Road Timeseries Graph |
n/m | 66 (1 Low) | n/m | 8 (1 Low) | 19 (2 Low) *2 | 21/09/2026 17:00:00 |
| Shrewsbury Underdale Timeseries Graph |
n/m | n/m | n/m | 6 (1 Low) | 14 (1 Low) *2 | 21/09/2026 11:00:00 |
| Stoke-on-Trent A50 Roadside Timeseries Graph |
n/m | 65 (1 Low) | n/m | 7 (1 Low) | 15 (1 Low) *2 | 21/09/2026 09:00:00 |
| Stoke-on-Trent Centre Timeseries Graph |
51 (2 Low) | 54 (1 Low) | n/m | 7 (1 Low) | 14 (1 Low) *2 | 21/09/2026 10:00:00 |
| Telford Hollinswood Timeseries Graph |
74 (3 Low) | 42 (1 Low) | n/m | 6 (1 Low) | 12 (1 Low) *2 | 21/09/2026 01:00:00 |
| Walsall Caldmore Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | 15 (1 Low) *2 | 21/09/2026 21:00:00 |
| Walsall Woodlands Timeseries Graph |
67 (3 Low) | 31 (1 Low) | n/m | n/m | n/m | 20/09/2026 22:00:00 |
| West Bromwich Kenrick Park Timeseries Graph |
59 (2 Low) | 49 (1 Low) | n/m | n/m | n/m | 20/09/2026 22:00:00 |
| Wolverhampton East Park Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 14 (1 Low) *2 | 21/09/2026 15:00:00 |
| Worcester Tolladine Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 13 (1 Low) *2 | 21/09/2026 01:00:00 |
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 |
58 (2 Low) | 35 (1 Low) | 2 (1 Low) | 7 (1 Low) | 15 (1 Low) *2 | 21/09/2026 12:15:00 |
| Bradford Mayo Avenue Timeseries Graph |
n/m | 44 (1 Low) | n/m | n/m | n/m | 21/09/2026 08:00:00 |
| Bradford Shipley Airedale Road Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 15 (1 Low) *2 | 21/09/2026 14:00:00 |
| Bradford West Park Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 15 (1 Low) *2 | 21/09/2026 13:00:00 |
| Dewsbury Ashworth Grange Timeseries Graph |
62 (2 Low) | 33 (1 Low) | n/m | 7 (1 Low) | 14 (1 Low) *2 | 21/09/2026 14:00:00 |
| Doncaster A630 Cleveland Street Timeseries Graph |
n/m | 50 (1 Low) | n/m | 8 (1 Low) | n/m | 21/09/2026 15:00:00 |
| Harrogate Woodlands Timeseries Graph |
n/m | n/m | n/m | 6 (1 Low) | 12 (1 Low) *2 | 21/09/2026 01:00:00 |
| High Muffles Timeseries Graph |
54 (2 Low) | 6 (1 Low) | n/m | 5 (1 Low) | 9 (1 Low) *2 | 21/09/2026 17:00:00 |
| Hull Freetown Timeseries Graph |
57 (2 Low) | 42 (1 Low) | 2 (1 Low) | 8 (1 Low) | 18 (2 Low) *2 | 21/09/2026 14:00:00 |
| Hull Holderness Road Timeseries Graph |
n/m | 46 (1 Low) | n/m | 8 (1 Low) | 18 (2 Low) *2 | 21/09/2026 18:00:00 |
| Immingham Woodlands Avenue Timeseries Graph |
65 (2 Low) | 13 (1 Low) | n/m | 7 (1 Low) | 15 (1 Low) *2 | 21/09/2026 18:00:00 |
| Leeds Centre Timeseries Graph |
49 (2 Low) | 49 (1 Low) | 5 (1 Low) | 7 (1 Low) | 14 (1 Low) *2 | 21/09/2026 11:00:00 |
| Leeds Headingley Kerbside Timeseries Graph |
n/m | 46 (1 Low) | n/m | 10 (1 Low) | 21 (2 Low) *1 | 21/09/2026 13:00:00 |
| Rotherham East Dene Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 15 (1 Low) *2 | 21/09/2026 15:00:00 |
| Scunthorpe Town Timeseries Graph |
n/m | 30 (1 Low) | 2 (1 Low) | 8 (1 Low) | 17 (2 Low) *1 | 21/09/2026 09:45:00 |
| Sheffield Barnsley Road Timeseries Graph |
n/m | 48 (1 Low) | n/m | 7 (1 Low) | n/m | 21/09/2026 21:00:00 |
| Sheffield Devonshire Green Timeseries Graph |
55 (2 Low) | 29 (1 Low) | n/m | 7 (1 Low) | 13 (1 Low) *2 | 21/09/2026 01:00:00 |
| Sheffield Tinsley Timeseries Graph |
48 (2 Low) | 43 (1 Low) | n/m | 7 (1 Low) | 16 (1 Low) *2 | 21/09/2026 14:00:00 |
| Wakefield Alverthorpe Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 15 (1 Low) *2 | 21/09/2026 14:00:00 |
| York Bootham Timeseries Graph |
49 (2 Low) | 37 (1 Low) | n/m | 8 (1 Low) | 18 (2 Low) *1 | 21/09/2026 14:00:00 |
| York Fishergate Timeseries Graph |
n/m | 31 (1 Low) | n/m | 6 (1 Low) | 21 (2 Low) *1 | 21/09/2026 15:00:00 |
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