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 Thu 12th Mar 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 |
78 (3 Low) | n/m | n/m | 4 (1 Low) | 6 (1 Low) *2 | 11/03/2026 24:00 |
| Bush Estate Timeseries Graph |
92 (3 Low) | 2 (1 Low) | n/m | n/m | n/m | 12/03/2026 18:00 |
| Dumbarton Roadside Timeseries Graph |
n/m | 2 (1 Low) | n/m | n/m | n/m | 12/03/2026 17:00 |
| Edinburgh Nicolson Street Timeseries Graph |
n/m | 48 (1 Low) | n/m | n/m | n/m | 12/03/2026 15:00 |
| Edinburgh St Leonards Timeseries Graph |
80 (3 Low) | 15 (1 Low) | 2 (1 Low) | 5 (1 Low) | 10 (1 Low) *2 | 12/03/2026 10:00 |
| Glasgow Great Western Road Timeseries Graph |
n/m | 12 (1 Low) | n/m | n/m | n/m | 12/03/2026 19:00 |
| Glasgow High Street Timeseries Graph |
n/m | 14 (1 Low) | n/m | 8 (1 Low) | 16 (1 Low) *2 | 11/03/2026 24:00 |
| Glasgow Kerbside Timeseries Graph |
n/m | 29 (1 Low) | n/m | n/m | n/m | 12/03/2026 10:00 |
| Glasgow Townhead Timeseries Graph |
91 (3 Low) | 14 (1 Low) | n/m | 7 (1 Low) | 13 (1 Low) *2 | 11/03/2026 24:00 |
| Grangemouth Timeseries Graph |
n/m | 5 (1 Low) | 2 (1 Low) | 6 (1 Low) | 14 (1 Low) *1 | 12/03/2026 22:00 |
| Grangemouth Moray Timeseries Graph |
n/m | 5 (1 Low) | n/m | n/m | n/m | 12/03/2026 19:00 |
| Greenock A8 Roadside Timeseries Graph |
n/m | 14 (1 Low) | n/m | 8 (1 Low) | 15 (1 Low) *2 | 12/03/2026 05:00 |
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 |
80 (3 Low) | 2 (1 Low) | n/m | 6 (1 Low) | 12 (1 Low) *2 | 12/03/2026 04:00 |
| Chesterfield Roadside Timeseries Graph |
n/m | 6 (1 Low) | n/m | 7 (1 Low) | 16 (1 Low) *2 | 12/03/2026 03:00 |
| Derby St Alkmund's Way Timeseries Graph |
n/m | 31 (1 Low) | n/m | 7 (1 Low) | n/m | 12/03/2026 06:00 |
| Derby Stockbrook Park Timeseries Graph |
73 (3 Low) | n/m | n/m | 6 (1 Low) | 12 (1 Low) *2 | 12/03/2026 06:00 |
| Ladybower Timeseries Graph |
88 (3 Low) | n/a | 1 (1 Low) | 6 (1 Low) | 11 (1 Low) *2 | 12/03/2026 18:00 |
| Leicester A594 Roadside Timeseries Graph |
n/m | 20 (1 Low) | n/m | 7 (1 Low) | 15 (1 Low) *2 | 12/03/2026 06:00 |
| Leicester University Timeseries Graph |
75 (3 Low) | 20 (1 Low) | n/m | 6 (1 Low) | 11 (1 Low) *2 | 12/03/2026 05:00 |
| Lincoln Canwick Road Timeseries Graph |
n/m | 15 (1 Low) | n/m | n/m | n/m | 12/03/2026 08:00 |
| Loughborough Thorpe Acre Timeseries Graph |
n/m | n/m | n/m | 6 (1 Low) | 11 (1 Low) *2 | 12/03/2026 04:00 |
| Mansfield Ladybrook Timeseries Graph |
n/m | n/m | n/m | 6 (1 Low) | 12 (1 Low) *2 | 12/03/2026 05:00 |
| Northampton Spring Park Timeseries Graph |
78 (3 Low) | 7 (1 Low) | n/m | 10 (1 Low) | n/m | 12/03/2026 05:00 |
| Nottingham Bilborough Timeseries Graph |
n/m | n/m | n/m | 6 (1 Low) | 11 (1 Low) *2 | 12/03/2026 06:00 |
| Nottingham Kenmore Gardens Timeseries Graph |
71 (3 Low) | 15 (1 Low) | 1 (1 Low) | 7 (1 Low) | 15 (1 Low) *2 | 12/03/2026 22:00 |
| Nottingham Western Boulevard Timeseries Graph |
n/m | 26 (1 Low) | n/m | 7 (1 Low) | 14 (1 Low) *2 | 12/03/2026 06:00 |
| Tallington Timeseries Graph |
79 (3 Low) | n/m | n/m | 6 (1 Low) | 11 (1 Low) *2 | 12/03/2026 06:00 |
| Toft Newton Timeseries Graph |
84 (3 Low) | 6 (1 Low) | n/m | 6 (1 Low) | 11 (1 Low) *2 | 12/03/2026 07:00 |
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 | 13 (1 Low) | n/m | 7 (1 Low) | 14 (1 Low) *2 | 12/03/2026 06:00 |
| Cambridge King's Hedges Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 13 (1 Low) *2 | 12/03/2026 16:00 |
| Cambridge Roadside Timeseries Graph |
n/m | 19 (1 Low) | n/m | n/m | n/m | 12/03/2026 09:00 |
| Luton A505 Roadside Timeseries Graph |
n/m | 13 (1 Low) | n/m | 7 (1 Low) | n/m | 12/03/2026 05:00 |
| Norwich Lakenfields Timeseries Graph |
73 (3 Low) | 10 (1 Low) | n/m | 6 (1 Low) | 12 (1 Low) *2 | 12/03/2026 18:00 |
| Peterborough Garton End Timeseries Graph |
n/m | n/m | n/m | 6 (1 Low) | 12 (1 Low) *2 | 12/03/2026 07:00 |
| Sibton Timeseries Graph |
78 (3 Low) | n/m | n/m | 6 (1 Low) | 12 (1 Low) *2 | 12/03/2026 22:00 |
| Southend Shoeburyness Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 14 (1 Low) *2 | 12/03/2026 22:00 |
| Southend-on-Sea Timeseries Graph |
77 (3 Low) | 18 (1 Low) | n/m | 7 (1 Low) | 14 (1 Low) *2 | 12/03/2026 22:00 |
| St Osyth Timeseries Graph |
86 (3 Low) | 10 (1 Low) | n/m | 8 (1 Low) | 14 (1 Low) *2 | 12/03/2026 22:00 |
| Stanford-le-Hope Roadside Timeseries Graph |
n/m | 15 (1 Low) | n/m | 10 (1 Low) | n/a | 12/03/2026 07:00 |
| Thurrock Timeseries Graph |
76 (3 Low) | 47 (1 Low) | 2 (1 Low) | 7 (1 Low) | 15 (1 Low) *2 | 12/03/2026 21:00 |
| Weybourne Timeseries Graph |
75 (3 Low) | n/m | n/m | 5 (1 Low) | 9 (1 Low) *2 | 12/03/2026 16:00 |
| Wicken Fen Timeseries Graph |
69 (3 Low) | 6 (1 Low) | 3 (1 Low) | 6 (1 Low) | 11 (1 Low) *2 | 12/03/2026 09:15 |
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 | 16 (1 Low) | n/m | 11 (1 Low) | 23 (2 Low) *1 | 12/03/2026 06:00 |
| Ealing Horn Lane Timeseries Graph |
n/m | n/m | n/m | n/m | 44 (3 Low) *1 | 12/03/2026 11:00 |
| Haringey Roadside Timeseries Graph |
n/m | 34 (1 Low) | n/m | n/m | n/m | 11/03/2026 23:00 |
| London A406 N Circular Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | n/m | 12/03/2026 06:00 |
| London Bexley Timeseries Graph |
n/m | 12 (1 Low) | n/m | 7 (1 Low) | 14 (1 Low) *2 | 12/03/2026 06:00 |
| London Bloomsbury Timeseries Graph |
72 (3 Low) | 17 (1 Low) | 2 (1 Low) | 8 (1 Low) | 16 (1 Low) *2 | 12/03/2026 17:45 |
| London Farringdon Street Timeseries Graph |
n/m | 29 (1 Low) | n/m | 9 (1 Low) | n/m | 12/03/2026 06:00 |
| London Haringey Priory Park South Timeseries Graph |
80 (3 Low) | 16 (1 Low) | n/m | 7 (1 Low) | 14 (1 Low) *2 | 12/03/2026 06:00 |
| London Harlington Timeseries Graph |
70 (3 Low) | 53 (1 Low) | n/m | 6 (1 Low) | 13 (1 Low) *2 | 12/03/2026 05:00 |
| London Hillingdon Timeseries Graph |
64 (2 Low) | 41 (1 Low) | n/m | 9 (1 Low) | 22 (2 Low) *2 | 12/03/2026 05:00 |
| London Honor Oak Park Timeseries Graph |
85 (3 Low) | n/m | n/m | 7 (1 Low) | 14 (1 Low) *2 | 12/03/2026 06:00 |
| London Marylebone Road Timeseries Graph |
62 (2 Low) | 44 (1 Low) | 3 (1 Low) | 19 (2 Low) | 24 (2 Low) *1 | 12/03/2026 13:15 |
| London N. Kensington Timeseries Graph |
81 (3 Low) | 10 (1 Low) | 3 (1 Low) | 7 (1 Low) | 14 (1 Low) *2 | 12/03/2026 21:00 |
| London Norbury Manor School Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 13 (1 Low) *2 | 12/03/2026 06:00 |
| London Teddington Bushy Park Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 15 (1 Low) *2 | 12/03/2026 05:00 |
| London Westminster Timeseries Graph |
73 (3 Low) | 13 (1 Low) | n/m | n/m | n/m | 12/03/2026 18:00 |
| Southwark A2 Old Kent Road Timeseries Graph |
n/m | 15 (1 Low) | n/m | n/m | n/a | 11/03/2026 23:00 |
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 |
86 (3 Low) | 21 (1 Low) | n/m | n/m | n/m | 12/03/2026 16:00 |
| Inverness Timeseries Graph |
n/m | 17 (1 Low) | n/m | 3 (1 Low) | 6 (1 Low) *2 | 11/03/2026 24:00 |
| Lerwick Timeseries Graph |
90 (3 Low) | n/m | n/m | n/m | n/m | 12/03/2026 21:00 |
| Strathvaich Timeseries Graph |
99 (3 Low) | n/m | n/m | n/m | n/m | 12/03/2026 18:00 |
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 |
| Hartlepool St Abbs Walk Timeseries Graph |
77 (3 Low) | 9 (1 Low) | n/m | 7 (1 Low) | 15 (1 Low) *2 | 12/03/2026 02:00 |
| Kielder Water Timeseries Graph |
77 (3 Low) | n/m | n/m | 6 (1 Low) | 10 (1 Low) *2 | 11/03/2026 24:00 |
| Middlesbrough Timeseries Graph |
80 (3 Low) | 11 (1 Low) | 2 (1 Low) | 5 (1 Low) | 16 (1 Low) *1 | 12/03/2026 20:30 |
| Newcastle Centre Timeseries Graph |
80 (3 Low) | 24 (1 Low) | n/m | 9 (1 Low) | 20 (2 Low) *1 | 12/03/2026 03:00 |
| Newcastle Cradlewell Roadside Timeseries Graph |
n/m | 38 (1 Low) | n/m | 6 (1 Low) | 16 (1 Low) *2 | 12/03/2026 01:00 |
| Redcar Milford Walk Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 15 (1 Low) *2 | 12/03/2026 03:00 |
| Stockton-on-Tees A1305 Roadside Timeseries Graph |
n/m | 8 (1 Low) | n/m | 6 (1 Low) | n/m | 12/03/2026 02:00 |
| Stockton-on-Tees Eaglescliffe Timeseries Graph |
n/m | 2 (1 Low) | n/m | 8 (1 Low) | 17 (2 Low) *1 | 12/03/2026 02:00 |
| Sunderland Silksworth Timeseries Graph |
85 (3 Low) | 11 (1 Low) | n/m | 6 (1 Low) | 13 (1 Low) *2 | 12/03/2026 02:00 |
| Sunderland Wessington Way Timeseries Graph |
n/m | 14 (1 Low) | n/m | 6 (1 Low) | n/m | 12/03/2026 02:00 |
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 |
83 (3 Low) | 13 (1 Low) | n/m | 4 (1 Low) | 9 (1 Low) *2 | 11/03/2026 24:00 |
| Aberdeen Wellington Road Timeseries Graph |
n/m | 13 (1 Low) | n/m | n/m | n/m | 12/03/2026 16:00 |
| Dundee Mains Loan Timeseries Graph |
n/m | n/a | n/m | n/m | n/m | 09/02/2026 02:00 |
| Perth Glasgow Road Timeseries Graph |
n/m | 26 (1 Low) | n/m | n/m | n/m | 12/03/2026 16:00 |
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 |
82 (3 Low) | 1 (1 Low) | n/m | n/m | n/m | 12/03/2026 08:00 |
| Wrexham Timeseries Graph |
n/m | 16 (1 Low) | 3 (1 Low) | 6 (1 Low) | 13 (1 Low) *2 | 12/03/2026 16:30 |
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 | 11 (1 Low) | n/m | 8 (1 Low) | n/m | 11/03/2026 24:00 |
| Blackburn Accrington Road Timeseries Graph |
n/m | 11 (1 Low) | n/m | n/m | n/m | 11/03/2026 23:00 |
| Blackburn Audley Park Timeseries Graph |
78 (3 Low) | n/m | n/m | 7 (1 Low) | 14 (1 Low) *2 | 12/03/2026 01:00 |
| Blackpool Marton Timeseries Graph |
85 (3 Low) | 8 (1 Low) | n/m | 11 (1 Low) | 24 (2 Low) *2 | 11/03/2026 24:00 |
| Blackpool Whitegate Drive Timeseries Graph |
n/m | n/m | n/m | 13 (2 Low) | n/m | 11/03/2026 24:00 |
| Bury Whitefield Roadside Timeseries Graph |
n/m | 14 (1 Low) | n/m | n/m | 24 (2 Low) *1 | 12/03/2026 20:00 |
| Carlisle Morton A595 Timeseries Graph |
n/m | 11 (1 Low) | n/m | 6 (1 Low) | 16 (1 Low) *1 | 11/03/2026 24:00 |
| Crewe Coppenhall Timeseries Graph |
78 (3 Low) | 6 (1 Low) | n/m | 7 (1 Low) | 13 (1 Low) *2 | 12/03/2026 02:00 |
| Glazebury Timeseries Graph |
78 (3 Low) | 5 (1 Low) | n/m | 7 (1 Low) | 13 (1 Low) *2 | 12/03/2026 01:00 |
| Liverpool Speke Timeseries Graph |
78 (3 Low) | 15 (1 Low) | 28 (1 Low) | 7 (1 Low) | 20 (2 Low) *1 | 12/03/2026 09:45 |
| Liverpool Thirlmere Park Timeseries Graph |
78 (3 Low) | n/m | n/m | 8 (1 Low) | 16 (1 Low) *2 | 12/03/2026 01:00 |
| Manchester Piccadilly Timeseries Graph |
65 (2 Low) | 20 (1 Low) | 2 (1 Low) | 9 (1 Low) | 21 (2 Low) *2 | 12/03/2026 20:45 |
| Manchester Sharston Timeseries Graph |
80 (3 Low) | 10 (1 Low) | n/m | 7 (1 Low) | 14 (1 Low) *2 | 12/03/2026 02:00 |
| Middlewich St Michael's Way Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | n/m | 12/03/2026 02:00 |
| Preston Timeseries Graph |
78 (3 Low) | 12 (1 Low) | n/m | 9 (1 Low) | 19 (2 Low) *2 | 12/03/2026 01:00 |
| Salford Eccles Timeseries Graph |
80 (3 Low) | 10 (1 Low) | n/m | 9 (1 Low) | 22 (2 Low) *2 | 12/03/2026 02:00 |
| Shaw Crompton Way Timeseries Graph |
n/m | 17 (1 Low) | n/m | n/m | n/m | 12/03/2026 17:00 |
| St Helens Linkway Timeseries Graph |
n/m | 25 (1 Low) | n/m | n/m | 23 (2 Low) *1 | 12/03/2026 09:00 |
| Tameside A635 Manchester Road Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | n/m | 12/03/2026 03:00 |
| Warrington Timeseries Graph |
n/m | 23 (1 Low) | n/m | 8 (1 Low) | 19 (2 Low) *1 | 12/03/2026 01:00 |
| Widnes Milton Road Timeseries Graph |
n/m | 26 (1 Low) | n/m | n/m | n/m | 12/03/2026 17:00 |
| Wigan Centre Timeseries Graph |
71 (3 Low) | 14 (1 Low) | n/m | 9 (1 Low) | 20 (2 Low) *2 | 12/03/2026 01:00 |
| Wirral Tranmere Timeseries Graph |
89 (3 Low) | 7 (1 Low) | n/m | 7 (1 Low) | 14 (1 Low) *2 | 11/03/2026 24:00 |
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 | 46 (1 Low) | n/m | n/m | 21 (2 Low) *1 | 12/03/2026 20:00 |
| Ballymena Antrim Road Timeseries Graph |
n/m | 20 (1 Low) | n/m | n/m | n/m | 12/03/2026 08:00 |
| Ballymena Ballykeel Timeseries Graph |
n/m | 11 (1 Low) | 36 (1 Low) | n/m | n/m | 12/03/2026 19:00 |
| Belfast Centre Timeseries Graph |
72 (3 Low) | 29 (1 Low) | 1 (1 Low) | 7 (1 Low) | 13 (1 Low) *2 | 12/03/2026 19:30 |
| Belfast Stockman's Lane Timeseries Graph |
n/m | 86 (2 Low) | n/m | n/m | 21 (2 Low) *1 | 12/03/2026 13:00 |
| Derry Rosemount Timeseries Graph |
81 (3 Low) | 9 (1 Low) | 3 (1 Low) | 4 (1 Low) | 14 (1 Low) *1 | 11/03/2026 22:15 |
| Lough Navar Timeseries Graph |
77 (3 Low) | n/m | n/m | 6 (1 Low) | 10 (1 Low) *2 | 12/03/2026 06:00 |
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 | 17 (1 Low) | n/m | n/m | n/m | 12/03/2026 16:00 |
| Eskdalemuir Timeseries Graph |
81 (3 Low) | 2 (1 Low) | n/m | n/m | n/m | 12/03/2026 17:00 |
| Peebles Timeseries Graph |
86 (3 Low) | 4 (1 Low) | n/m | n/m | n/m | 12/03/2026 18:00 |
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 | 8 (1 Low) | n/m | 12/03/2026 05:00 |
| Brighton Preston Park Timeseries Graph |
71 (3 Low) | 22 (1 Low) | n/m | 11 (1 Low) | 23 (2 Low) *2 | 12/03/2026 22:00 |
| Chatham Roadside Timeseries Graph |
n/m | 28 (1 Low) | n/m | 7 (1 Low) | 23 (2 Low) *1 | 12/03/2026 07:00 |
| Chilbolton Observatory Timeseries Graph |
87 (3 Low) | 7 (1 Low) | 2 (1 Low) | 7 (1 Low) | 13 (1 Low) *2 | 12/03/2026 13:15 |
| Eastbourne Timeseries Graph |
72 (3 Low) | 4 (1 Low) | n/m | 9 (1 Low) | 18 (2 Low) *2 | 12/03/2026 22:00 |
| Farnborough Cherrywood Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | 14 (1 Low) *2 | 12/03/2026 05:00 |
| Horley Timeseries Graph |
n/m | 22 (1 Low) | n/m | 8 (1 Low) | 16 (1 Low) *2 | 12/03/2026 21:00 |
| Lullington Heath Timeseries Graph |
89 (3 Low) | 5 (1 Low) | 2 (1 Low) | 9 (1 Low) | 18 (2 Low) *2 | 12/03/2026 21:45 |
| Maidstone Upper Stone Street Timeseries Graph |
n/m | n/m | n/m | n/a | n/a | 26/02/2026 03:00 |
| Milton Keynes Civic Centre Timeseries Graph |
79 (3 Low) | n/m | n/m | 7 (1 Low) | 13 (1 Low) *2 | 12/03/2026 05:00 |
| Oxford Centre Roadside Timeseries Graph |
n/m | 9 (1 Low) | n/m | n/m | n/m | 12/03/2026 10:00 |
| Oxford St Ebbes Timeseries Graph |
74 (3 Low) | 5 (1 Low) | n/m | 7 (1 Low) | 14 (1 Low) *2 | 12/03/2026 04:00 |
| Portsmouth Timeseries Graph |
72 (3 Low) | 16 (1 Low) | n/m | 9 (1 Low) | 17 (2 Low) *2 | 12/03/2026 22:00 |
| Portsmouth Anglesea Road Timeseries Graph |
n/m | 24 (1 Low) | n/m | 10 (1 Low) | 19 (2 Low) *2 | 12/03/2026 22:00 |
| Reading London Road Timeseries Graph |
n/m | 9 (1 Low) | n/m | n/m | 19 (2 Low) *1 | 11/03/2026 23:00 |
| Reading New Town Timeseries Graph |
73 (3 Low) | 10 (1 Low) | n/m | 8 (1 Low) | 15 (1 Low) *2 | 12/03/2026 05:00 |
| Reading Rose Kiln Lane Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | n/m | 12/03/2026 05:00 |
| Rochester Stoke Timeseries Graph |
79 (3 Low) | 4 (1 Low) | 1 (1 Low) | 8 (1 Low) | 16 (1 Low) *2 | 12/03/2026 13:30 |
| Slough Windmill Bath Road Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | 18 (2 Low) *2 | 12/03/2026 05:00 |
| Southampton A33 Timeseries Graph |
n/m | 22 (1 Low) | n/m | 11 (1 Low) | 22 (2 Low) *2 | 12/03/2026 19:00 |
| Southampton Centre Timeseries Graph |
75 (3 Low) | 24 (1 Low) | 1 (1 Low) | 10 (1 Low) | 20 (2 Low) *2 | 12/03/2026 17:30 |
| Storrington Roadside Timeseries Graph |
n/m | 9 (1 Low) | n/m | 10 (1 Low) | 20 (2 Low) *2 | 12/03/2026 22:00 |
| Worthing A27 Roadside Timeseries Graph |
n/m | 37 (1 Low) | n/m | 13 (2 Low) | n/m | 12/03/2026 22:00 |
| Worthing East Ten Acres Timeseries Graph |
n/m | n/m | n/m | 12 (2 Low) | 26 (2 Low) *2 | 12/03/2026 22:00 |
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 |
78 (3 Low) | 9 (1 Low) | 1 (1 Low) | 11 (1 Low) | 25 (2 Low) *1 | 12/03/2026 18:45 |
| Cardiff Newport Road Timeseries Graph |
n/m | 8 (1 Low) | n/m | n/m | 26 (2 Low) *1 | 11/03/2026 23:00 |
| Chepstow A48 Timeseries Graph |
n/m | 42 (1 Low) | n/m | 10 (1 Low) | 22 (2 Low) *1 | 12/03/2026 02:00 |
| Cwmbran Crownbridge Timeseries Graph |
83 (3 Low) | 7 (1 Low) | n/m | n/m | n/m | 11/03/2026 23:00 |
| Hafod-yr-ynys Hill Roadside Timeseries Graph |
n/m | 43 (1 Low) | n/m | n/m | n/m | 11/03/2026 18:00 |
| Narberth Timeseries Graph |
86 (3 Low) | 2 (1 Low) | 2 (1 Low) | 10 (1 Low) | 18 (2 Low) *2 | 12/03/2026 20:15 |
| Newport Timeseries Graph |
n/m | 10 (1 Low) | n/m | 10 (1 Low) | 22 (2 Low) *2 | 12/03/2026 02:00 |
| Port Talbot Margam Timeseries Graph |
82 (3 Low) | 14 (1 Low) | 1 (1 Low) | 7 (1 Low) | 31 (2 Low) *3 | 12/03/2026 10:15 |
| Swansea Roadside Timeseries Graph |
n/m | 6 (1 Low) | n/m | 9 (1 Low) | 25 (2 Low) *1 | 12/03/2026 01:00 |
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 | 11 (1 Low) | 23 (2 Low) *2 | 12/03/2026 01:00 |
| Bath A4 Roadside Timeseries Graph |
n/m | 18 (1 Low) | n/m | n/m | n/m | 12/03/2026 08:00 |
| Bournemouth Timeseries Graph |
78 (3 Low) | 7 (1 Low) | n/m | 11 (1 Low) | n/m | 12/03/2026 21:00 |
| Bristol Patchway Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 20 (2 Low) *2 | 12/03/2026 02:00 |
| Bristol St Paul's Timeseries Graph |
75 (3 Low) | 11 (1 Low) | n/m | 8 (1 Low) | 28 (2 Low) *1 | 12/03/2026 03:00 |
| Bristol Temple Way Timeseries Graph |
n/m | 42 (1 Low) | n/m | 10 (1 Low) | 22 (2 Low) *2 | 12/03/2026 02:00 |
| Charlton Mackrell Timeseries Graph |
82 (3 Low) | 5 (1 Low) | n/m | 9 (1 Low) | 15 (1 Low) *2 | 12/03/2026 03:00 |
| Cheltenham A40 Gloucester Road Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | n/m | 12/03/2026 04:00 |
| Christchurch Barrack Road Timeseries Graph |
n/m | 4 (1 Low) | n/m | 7 (1 Low) | n/m | 12/03/2026 22:00 |
| Exeter Roadside Timeseries Graph |
83 (3 Low) | 12 (1 Low) | n/m | n/m | n/m | 12/03/2026 10:00 |
| Gloucester Tredworth Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | 16 (1 Low) *2 | 12/03/2026 04:00 |
| Honiton Timeseries Graph |
81 (3 Low) | 4 (1 Low) | n/m | 8 (1 Low) | 16 (1 Low) *2 | 12/03/2026 02:00 |
| Plymouth Centre Timeseries Graph |
84 (3 Low) | 90 (2 Low) | n/m | 12 (2 Low) | 32 (2 Low) *2 | 12/03/2026 17:00 |
| Plymouth Tavistock Road Timeseries Graph |
n/m | 12 (1 Low) | n/m | n/m | n/m | 11/03/2026 22:00 |
| Saltash Callington Road Timeseries Graph |
n/m | n/m | n/m | 6 (1 Low) | 26 (2 Low) *1 | 12/03/2026 14:00 |
| Swindon Walcot Timeseries Graph |
76 (3 Low) | 6 (1 Low) | n/m | 8 (1 Low) | 16 (1 Low) *2 | 12/03/2026 03:00 |
| Yarner Wood Timeseries Graph |
84 (3 Low) | 3 (1 Low) | n/m | 8 (1 Low) | 15 (1 Low) *2 | 12/03/2026 02:00 |
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 |
95 (3 Low) | n/m | n/m | n/m | n/m | 12/03/2026 19:00 |
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 |
67 (3 Low) | 35 (1 Low) | n/m | 8 (1 Low) | 28 (2 Low) *2 | 12/03/2026 12:00 |
| Birmingham Hall Green Timeseries Graph |
81 (3 Low) | 7 (1 Low) | n/m | 6 (1 Low) | 12 (1 Low) *2 | 12/03/2026 05:00 |
| Birmingham Ladywood Timeseries Graph |
84 (3 Low) | 7 (1 Low) | 2 (1 Low) | 6 (1 Low) | 12 (1 Low) *2 | 12/03/2026 13:15 |
| Birmingham University Timeseries Graph |
n/m | n/m | n/m | 6 (1 Low) | 12 (1 Low) *2 | 12/03/2026 04:00 |
| Burton-on-Trent Horninglow Timeseries Graph |
73 (3 Low) | 17 (1 Low) | n/m | 7 (1 Low) | 13 (1 Low) *2 | 12/03/2026 05:00 |
| Cannock A5190 Roadside Timeseries Graph |
n/m | 8 (1 Low) | n/m | 6 (1 Low) | n/m | 12/03/2026 03:00 |
| Coventry Allesley Timeseries Graph |
71 (3 Low) | 9 (1 Low) | n/m | 6 (1 Low) | 13 (1 Low) *2 | 12/03/2026 05:00 |
| Coventry Binley Road Timeseries Graph |
n/m | 19 (1 Low) | n/m | 7 (1 Low) | 14 (1 Low) *2 | 12/03/2026 05:00 |
| Leamington Spa Timeseries Graph |
79 (3 Low) | 22 (1 Low) | n/m | 7 (1 Low) | 13 (1 Low) *2 | 12/03/2026 05:00 |
| Leamington Spa Rugby Road Timeseries Graph |
n/m | 10 (1 Low) | n/m | 6 (1 Low) | 12 (1 Low) *2 | 12/03/2026 05:00 |
| Leominster Timeseries Graph |
82 (3 Low) | 4 (1 Low) | n/m | n/m | n/m | 12/03/2026 08:00 |
| Oldbury Birmingham Road Timeseries Graph |
n/m | 16 (1 Low) | n/m | 7 (1 Low) | 16 (1 Low) *2 | 12/03/2026 05:00 |
| Shrewsbury Underdale Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 13 (1 Low) *2 | 12/03/2026 01:00 |
| Stoke-on-Trent A50 Roadside Timeseries Graph |
n/m | 26 (1 Low) | n/m | 7 (1 Low) | 14 (1 Low) *2 | 12/03/2026 03:00 |
| Stoke-on-Trent Centre Timeseries Graph |
74 (3 Low) | 18 (1 Low) | n/m | 6 (1 Low) | 14 (1 Low) *2 | 12/03/2026 03:00 |
| Telford Hollinswood Timeseries Graph |
87 (3 Low) | 6 (1 Low) | n/m | 6 (1 Low) | 13 (1 Low) *2 | 12/03/2026 02:00 |
| Walsall Caldmore Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 14 (1 Low) *2 | 12/03/2026 04:00 |
| Walsall Woodlands Timeseries Graph |
83 (3 Low) | 9 (1 Low) | n/m | n/m | n/m | 12/03/2026 08:00 |
| West Bromwich Kenrick Park Timeseries Graph |
73 (3 Low) | 11 (1 Low) | n/m | n/m | n/m | 12/03/2026 08:00 |
| Worcester Tolladine Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 13 (1 Low) *2 | 12/03/2026 03:00 |
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 |
84 (3 Low) | 7 (1 Low) | 3 (1 Low) | 6 (1 Low) | 13 (1 Low) *2 | 11/03/2026 22:15 |
| Bradford Mayo Avenue Timeseries Graph |
n/m | 13 (1 Low) | n/m | n/m | n/m | 12/03/2026 18:00 |
| Bradford Shipley Airedale Road Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 24 (2 Low) *2 | 12/03/2026 02:00 |
| Dewsbury Ashworth Grange Timeseries Graph |
75 (3 Low) | 11 (1 Low) | n/m | 7 (1 Low) | 17 (2 Low) *2 | 12/03/2026 02:00 |
| Doncaster A630 Cleveland Street Timeseries Graph |
n/m | 13 (1 Low) | n/m | 8 (1 Low) | n/m | 12/03/2026 03:00 |
| Harrogate Woodlands Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | 14 (1 Low) *2 | 12/03/2026 02:00 |
| High Muffles Timeseries Graph |
74 (3 Low) | 3 (1 Low) | n/m | 6 (1 Low) | 9 (1 Low) *2 | 12/03/2026 03:00 |
| Hull Freetown Timeseries Graph |
65 (2 Low) | 25 (1 Low) | 3 (1 Low) | 7 (1 Low) | 17 (2 Low) *2 | 12/03/2026 12:15 |
| Hull Holderness Road Timeseries Graph |
n/m | 24 (1 Low) | n/m | 7 (1 Low) | 19 (2 Low) *2 | 12/03/2026 05:00 |
| Immingham Woodlands Avenue Timeseries Graph |
78 (3 Low) | 4 (1 Low) | n/m | 6 (1 Low) | 12 (1 Low) *2 | 12/03/2026 07:00 |
| Leeds Centre Timeseries Graph |
73 (3 Low) | 17 (1 Low) | 2 (1 Low) | 8 (1 Low) | 17 (2 Low) *2 | 12/03/2026 08:30 |
| Leeds Headingley Kerbside Timeseries Graph |
n/m | 15 (1 Low) | n/m | 9 (1 Low) | 25 (2 Low) *1 | 12/03/2026 02:00 |
| Rotherham East Dene Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 14 (1 Low) *2 | 12/03/2026 03:00 |
| Scunthorpe Town Timeseries Graph |
n/m | 7 (1 Low) | 3 (1 Low) | 9 (1 Low) | 15 (1 Low) *1 | 12/03/2026 20:45 |
| Sheffield Barnsley Road Timeseries Graph |
n/m | 23 (1 Low) | n/m | 7 (1 Low) | n/m | 12/03/2026 03:00 |
| Sheffield Devonshire Green Timeseries Graph |
76 (3 Low) | 9 (1 Low) | n/m | 7 (1 Low) | 14 (1 Low) *2 | 12/03/2026 03:00 |
| Sheffield Tinsley Timeseries Graph |
68 (3 Low) | 20 (1 Low) | n/m | 7 (1 Low) | 16 (1 Low) *2 | 12/03/2026 03:00 |
| Wakefield Alverthorpe Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 24 (2 Low) *2 | 12/03/2026 02:00 |
| York Bootham Timeseries Graph |
66 (2 Low) | 11 (1 Low) | n/m | 8 (1 Low) | 20 (2 Low) *1 | 12/03/2026 03:00 |
| York Fishergate Timeseries Graph |
n/m | 8 (1 Low) | n/m | 4 (1 Low) | 23 (2 Low) *1 | 12/03/2026 02:00 |
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