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 1pm Sun 21st Dec 2025
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 |
60 (2 Low) | n/m | n/m | 4 (1 Low) | 7 (1 Low) *2 | 21/12/2025 13:00 |
| Bush Estate Timeseries Graph |
65 (2 Low) | 9 (1 Low) | n/m | n/m | n/m | 20/12/2025 17:00 |
| Dumbarton Roadside Timeseries Graph |
n/m | 19 (1 Low) | n/m | n/m | n/m | 20/12/2025 17:00 |
| Edinburgh Nicolson Street Timeseries Graph |
n/m | 35 (1 Low) | n/m | n/m | n/m | 20/12/2025 21:00 |
| Edinburgh St Leonards Timeseries Graph |
56 (2 Low) | 21 (1 Low) | 1 (1 Low) | 5 (1 Low) | 8 (1 Low) *2 | 21/12/2025 01:30 |
| Glasgow Great Western Road Timeseries Graph |
n/m | 38 (1 Low) | n/m | n/m | n/m | 20/12/2025 17:00 |
| Glasgow High Street Timeseries Graph |
n/m | 22 (1 Low) | n/m | 5 (1 Low) | 8 (1 Low) *2 | 21/12/2025 13:00 |
| Glasgow Kerbside Timeseries Graph |
n/m | 70 (2 Low) | n/m | n/m | n/m | 20/12/2025 24:00 |
| Glasgow Townhead Timeseries Graph |
59 (2 Low) | 29 (1 Low) | n/m | 5 (1 Low) | 7 (1 Low) *2 | 21/12/2025 13:00 |
| Grangemouth Timeseries Graph |
n/m | 18 (1 Low) | 0 (1 Low) | 7 (1 Low) | 9 (1 Low) *1 | 20/12/2025 12:15 |
| Grangemouth Moray Timeseries Graph |
n/m | 17 (1 Low) | n/m | n/m | n/m | 20/12/2025 20:00 |
| Greenock A8 Roadside Timeseries Graph |
n/m | 36 (1 Low) | n/m | 4 (1 Low) | 7 (1 Low) *2 | 21/12/2025 13:00 |
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 |
42 (2 Low) | 22 (1 Low) | n/m | 13 (2 Low) | 16 (1 Low) *2 | 21/12/2025 13:00 |
| Chesterfield Roadside Timeseries Graph |
n/m | 29 (1 Low) | n/m | 14 (2 Low) | 18 (2 Low) *2 | 21/12/2025 13:00 |
| Derby St Alkmund's Way Timeseries Graph |
n/m | 33 (1 Low) | n/m | 13 (2 Low) | n/m | 21/12/2025 13:00 |
| Derby Stockbrook Park Timeseries Graph |
33 (1 Low) | n/m | n/m | 12 (2 Low) | 15 (1 Low) *2 | 21/12/2025 13:00 |
| Ladybower Timeseries Graph |
59 (2 Low) | 13 (1 Low) | n/a | 7 (1 Low) | 9 (1 Low) *2 | 18/12/2025 09:45 |
| Leicester A594 Roadside Timeseries Graph |
n/m | 38 (1 Low) | n/m | 10 (1 Low) | 14 (1 Low) *2 | 21/12/2025 13:00 |
| Leicester University Timeseries Graph |
46 (2 Low) | 17 (1 Low) | n/m | 9 (1 Low) | 12 (1 Low) *2 | 21/12/2025 13:00 |
| Lincoln Canwick Road Timeseries Graph |
n/m | 38 (1 Low) | n/m | n/m | n/m | 20/12/2025 16:00 |
| Loughborough Thorpe Acre Timeseries Graph |
n/m | n/m | n/m | 12 (2 Low) | 15 (1 Low) *2 | 21/12/2025 13:00 |
| Mansfield Ladybrook Timeseries Graph |
n/m | n/m | n/m | 13 (2 Low) | 17 (2 Low) *2 | 21/12/2025 13:00 |
| Northampton Spring Park Timeseries Graph |
n/a | 26 (1 Low) | n/m | 15 (2 Low) | n/m | 21/12/2025 13:00 |
| Nottingham Bilborough Timeseries Graph |
n/m | n/m | n/m | 12 (2 Low) | 15 (1 Low) *2 | 21/12/2025 13:00 |
| Nottingham Kenmore Gardens Timeseries Graph |
35 (2 Low) | 23 (1 Low) | 1 (1 Low) | 14 (2 Low) | 18 (2 Low) *2 | 20/12/2025 17:45 |
| Nottingham Western Boulevard Timeseries Graph |
n/m | 27 (1 Low) | n/m | 13 (2 Low) | 16 (1 Low) *2 | 21/12/2025 13:00 |
| Tallington Timeseries Graph |
37 (2 Low) | n/m | n/m | 14 (2 Low) | 18 (2 Low) *2 | 21/12/2025 13:00 |
| Toft Newton Timeseries Graph |
47 (2 Low) | 15 (1 Low) | n/m | 11 (1 Low) | 13 (1 Low) *2 | 21/12/2025 13:00 |
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 | n/a | n/m | 11 (1 Low) | 14 (1 Low) *2 | 21/12/2025 13:00 |
| Cambridge King's Hedges Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 15 (1 Low) *2 | 21/12/2025 13:00 |
| Cambridge Roadside Timeseries Graph |
n/m | 51 (1 Low) | n/m | n/m | n/m | 20/12/2025 19:00 |
| Luton A505 Roadside Timeseries Graph |
n/m | 50 (1 Low) | n/m | 12 (2 Low) | n/m | 21/12/2025 13:00 |
| Norwich Lakenfields Timeseries Graph |
30 (1 Low) | 25 (1 Low) | n/m | 12 (2 Low) | 16 (1 Low) *2 | 21/12/2025 13:00 |
| Peterborough Garton End Timeseries Graph |
n/m | n/m | n/m | 13 (2 Low) | 17 (2 Low) *2 | 21/12/2025 13:00 |
| Sibton Timeseries Graph |
54 (2 Low) | n/m | n/m | 10 (1 Low) | 14 (1 Low) *2 | 21/12/2025 13:00 |
| Southend Shoeburyness Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 13 (1 Low) *2 | 21/12/2025 13:00 |
| Southend-on-Sea Timeseries Graph |
44 (2 Low) | 28 (1 Low) | n/m | 10 (1 Low) | 15 (1 Low) *2 | 21/12/2025 13:00 |
| St Osyth Timeseries Graph |
65 (2 Low) | 16 (1 Low) | n/m | 9 (1 Low) | 13 (1 Low) *2 | 21/12/2025 13:00 |
| Stanford-le-Hope Roadside Timeseries Graph |
n/m | 39 (1 Low) | n/m | 13 (2 Low) | 17 (2 Low) *1 | 21/12/2025 13:00 |
| Thurrock Timeseries Graph |
32 (1 Low) | 38 (1 Low) | 2 (1 Low) | 12 (2 Low) | 16 (1 Low) *2 | 20/12/2025 13:15 |
| Weybourne Timeseries Graph |
50 (2 Low) | n/m | n/m | 12 (2 Low) | 16 (1 Low) *2 | 21/12/2025 13:00 |
| Wicken Fen Timeseries Graph |
46 (2 Low) | 16 (1 Low) | 2 (1 Low) | 10 (1 Low) | 14 (1 Low) *2 | 21/12/2025 00:45 |
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 | 51 (1 Low) | n/m | 12 (2 Low) | 26 (2 Low) *1 | 21/12/2025 03:00 |
| Ealing Horn Lane Timeseries Graph |
n/m | n/m | n/m | n/m | 20 (2 Low) *1 | 21/12/2025 02:00 |
| Haringey Roadside Timeseries Graph |
n/m | 49 (1 Low) | n/m | n/m | n/m | 20/12/2025 18:00 |
| London Bexley Timeseries Graph |
n/m | 45 (1 Low) | n/m | 12 (2 Low) | 16 (1 Low) *2 | 21/12/2025 13:00 |
| London Bloomsbury Timeseries Graph |
39 (2 Low) | 54 (1 Low) | 3 (1 Low) | 11 (1 Low) | 15 (1 Low) *2 | 20/12/2025 23:00 |
| London Farringdon Street Timeseries Graph |
n/m | 41 (1 Low) | n/m | 12 (2 Low) | n/m | 21/12/2025 13:00 |
| London Haringey Priory Park South Timeseries Graph |
40 (2 Low) | 40 (1 Low) | n/m | 11 (1 Low) | 15 (1 Low) *2 | 21/12/2025 13:00 |
| London Harlington Timeseries Graph |
48 (2 Low) | 40 (1 Low) | n/m | 9 (1 Low) | 12 (1 Low) *2 | 21/12/2025 13:00 |
| London Hillingdon Timeseries Graph |
25 (1 Low) | 46 (1 Low) | n/m | 10 (1 Low) | 14 (1 Low) *2 | 21/12/2025 13:00 |
| London Honor Oak Park Timeseries Graph |
51 (2 Low) | n/m | n/m | 10 (1 Low) | 13 (1 Low) *2 | 21/12/2025 13:00 |
| London Marylebone Road Timeseries Graph |
36 (2 Low) | 49 (1 Low) | 2 (1 Low) | 13 (2 Low) | 20 (2 Low) *1 | 21/12/2025 12:00 |
| London N. Kensington Timeseries Graph |
58 (2 Low) | 35 (1 Low) | 2 (1 Low) | 10 (1 Low) | 14 (1 Low) *2 | 21/12/2025 03:15 |
| London Norbury Manor School Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 13 (1 Low) *2 | 21/12/2025 13:00 |
| London Teddington Bushy Park Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | 13 (1 Low) *2 | 21/12/2025 13:00 |
| London Westminster Timeseries Graph |
41 (2 Low) | 42 (1 Low) | n/m | n/m | n/m | 20/12/2025 19:00 |
| Southwark A2 Old Kent Road Timeseries Graph |
n/m | 50 (1 Low) | n/m | n/m | 26 (2 Low) *1 | 21/12/2025 01:00 |
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 |
69 (3 Low) | 21 (1 Low) | n/m | n/m | n/m | 21/12/2025 13:00 |
| Inverness Timeseries Graph |
n/m | 68 (2 Low) | n/m | 14 (2 Low) | 17 (2 Low) *2 | 21/12/2025 13:00 |
| Lerwick Timeseries Graph |
73 (3 Low) | n/m | n/m | n/m | n/m | 21/12/2025 04:00 |
| Strathvaich Timeseries Graph |
69 (3 Low) | n/m | n/m | n/m | n/m | 21/12/2025 10:00 |
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 |
52 (2 Low) | 29 (1 Low) | n/m | 10 (1 Low) | 19 (2 Low) *2 | 21/12/2025 08:00 |
| Kielder Water Timeseries Graph |
53 (2 Low) | n/m | n/m | 6 (1 Low) | 8 (1 Low) *2 | 21/12/2025 10:00 |
| Middlesbrough Timeseries Graph |
53 (2 Low) | 43 (1 Low) | 2 (1 Low) | 6 (1 Low) | 13 (1 Low) *1 | 20/12/2025 21:30 |
| Newcastle Centre Timeseries Graph |
50 (2 Low) | 45 (1 Low) | n/m | 9 (1 Low) | 17 (2 Low) *1 | 21/12/2025 04:00 |
| Newcastle Cradlewell Roadside Timeseries Graph |
n/m | 63 (1 Low) | n/m | 9 (1 Low) | 13 (1 Low) *2 | 21/12/2025 06:00 |
| Stockton-on-Tees A1305 Roadside Timeseries Graph |
n/m | 59 (1 Low) | n/m | 7 (1 Low) | n/m | 21/12/2025 13:00 |
| Stockton-on-Tees Eaglescliffe Timeseries Graph |
n/m | 41 (1 Low) | n/m | 8 (1 Low) | 16 (1 Low) *1 | 21/12/2025 03:00 |
| Sunderland Silksworth Timeseries Graph |
58 (2 Low) | n/a | n/m | 8 (1 Low) | 12 (1 Low) *2 | 21/12/2025 07:00 |
| Sunderland Wessington Way Timeseries Graph |
n/m | 30 (1 Low) | n/m | 9 (1 Low) | n/m | 21/12/2025 06:00 |
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 |
63 (2 Low) | 38 (1 Low) | n/m | 7 (1 Low) | 15 (1 Low) *2 | 21/12/2025 13:00 |
| Aberdeen Wellington Road Timeseries Graph |
n/m | 26 (1 Low) | n/m | n/m | n/m | 21/12/2025 10:00 |
| Dundee Mains Loan Timeseries Graph |
n/m | 24 (1 Low) | n/m | n/m | n/m | 20/12/2025 18:00 |
| Perth Glasgow Road Timeseries Graph |
n/m | 38 (1 Low) | n/m | n/m | n/m | 20/12/2025 17:00 |
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 |
75 (3 Low) | 7 (1 Low) | n/m | n/m | n/m | 20/12/2025 17:00 |
| Wrexham Timeseries Graph |
n/m | 30 (1 Low) | 2 (1 Low) | 11 (1 Low) | 13 (1 Low) *2 | 21/12/2025 12:30 |
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 | 28 (1 Low) | n/m | 9 (1 Low) | n/m | 21/12/2025 11:00 |
| Blackburn Accrington Road Timeseries Graph |
n/m | 29 (1 Low) | n/m | n/m | n/m | 20/12/2025 15:00 |
| Blackburn Audley Park Timeseries Graph |
52 (2 Low) | n/m | n/m | 8 (1 Low) | 10 (1 Low) *2 | 21/12/2025 13:00 |
| Blackpool Marton Timeseries Graph |
50 (2 Low) | 16 (1 Low) | n/m | 8 (1 Low) | 10 (1 Low) *2 | 21/12/2025 13:00 |
| Blackpool Whitegate Drive Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | n/m | 21/12/2025 13:00 |
| Bury Whitefield Roadside Timeseries Graph |
n/m | 24 (1 Low) | n/m | n/m | 13 (1 Low) *1 | 20/12/2025 19:00 |
| Carlisle Morton A595 Timeseries Graph |
n/m | 24 (1 Low) | n/m | 6 (1 Low) | 9 (1 Low) *1 | 21/12/2025 13:00 |
| Crewe Coppenhall Timeseries Graph |
50 (2 Low) | 22 (1 Low) | n/m | 9 (1 Low) | 12 (1 Low) *2 | 21/12/2025 13:00 |
| Glazebury Timeseries Graph |
50 (2 Low) | 18 (1 Low) | n/m | 7 (1 Low) | 10 (1 Low) *2 | 21/12/2025 04:00 |
| Liverpool Speke Timeseries Graph |
53 (2 Low) | 23 (1 Low) | 2 (1 Low) | 8 (1 Low) | 13 (1 Low) *1 | 21/12/2025 12:45 |
| Liverpool Thirlmere Park Timeseries Graph |
51 (2 Low) | n/m | n/m | 9 (1 Low) | 12 (1 Low) *2 | 21/12/2025 05:00 |
| Manchester Piccadilly Timeseries Graph |
48 (2 Low) | 52 (1 Low) | 1 (1 Low) | 11 (1 Low) | 13 (1 Low) *2 | 21/12/2025 00:15 |
| Manchester Sharston Timeseries Graph |
56 (2 Low) | 13 (1 Low) | n/m | 7 (1 Low) | 11 (1 Low) *2 | 21/12/2025 07:00 |
| Middlewich St Michael's Way Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | n/m | 21/12/2025 13:00 |
| Preston Timeseries Graph |
46 (2 Low) | 20 (1 Low) | n/m | 8 (1 Low) | 10 (1 Low) *2 | 21/12/2025 13:00 |
| Salford Eccles Timeseries Graph |
58 (2 Low) | 24 (1 Low) | n/m | 8 (1 Low) | 12 (1 Low) *2 | 21/12/2025 08:00 |
| Shaw Crompton Way Timeseries Graph |
n/m | 15 (1 Low) | n/m | n/m | n/m | 20/12/2025 15:00 |
| St Helens Linkway Timeseries Graph |
n/m | n/a | n/m | n/m | 10 (1 Low) *1 | 13/12/2025 09:00 |
| Tameside A635 Manchester Road Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | n/m | 21/12/2025 13:00 |
| Warrington Timeseries Graph |
n/m | 29 (1 Low) | n/m | 9 (1 Low) | 15 (1 Low) *1 | 21/12/2025 07:00 |
| Widnes Milton Road Timeseries Graph |
n/m | 45 (1 Low) | n/m | n/m | n/m | 20/12/2025 16:00 |
| Wigan Centre Timeseries Graph |
52 (2 Low) | 25 (1 Low) | n/m | 9 (1 Low) | 12 (1 Low) *2 | 21/12/2025 12:00 |
| Wirral Tranmere Timeseries Graph |
50 (2 Low) | 20 (1 Low) | n/m | 7 (1 Low) | 9 (1 Low) *2 | 21/12/2025 01:00 |
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 | 49 (1 Low) | n/m | n/m | 15 (1 Low) *1 | 21/12/2025 13:00 |
| Ballymena Antrim Road Timeseries Graph |
n/m | 10 (1 Low) | n/m | n/m | n/m | 21/12/2025 13:00 |
| Ballymena Ballykeel Timeseries Graph |
n/m | 11 (1 Low) | 27 (1 Low) | n/m | n/m | 19/12/2025 22:00 |
| Belfast Centre Timeseries Graph |
63 (2 Low) | 23 (1 Low) | 2 (1 Low) | 9 (1 Low) | 17 (2 Low) *2 | 20/12/2025 22:15 |
| Belfast Stockman's Lane Timeseries Graph |
n/m | 25 (1 Low) | n/m | n/m | 20 (2 Low) *1 | 21/12/2025 13:00 |
| Derry Rosemount Timeseries Graph |
69 (3 Low) | 17 (1 Low) | 15 (1 Low) | 6 (1 Low) | 14 (1 Low) *1 | 20/12/2025 21:00 |
| Lough Navar Timeseries Graph |
65 (2 Low) | n/m | n/m | 4 (1 Low) | 7 (1 Low) *2 | 21/12/2025 01:00 |
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 | 21 (1 Low) | n/m | n/m | n/m | 20/12/2025 15:00 |
| Eskdalemuir Timeseries Graph |
57 (2 Low) | 4 (1 Low) | n/m | n/m | n/m | 21/12/2025 07:00 |
| Peebles Timeseries Graph |
64 (2 Low) | 7 (1 Low) | n/m | n/m | n/m | 21/12/2025 10:00 |
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 | 9 (1 Low) | n/m | 21/12/2025 13:00 |
| Brighton Preston Park Timeseries Graph |
56 (2 Low) | 14 (1 Low) | n/m | 6 (1 Low) | 11 (1 Low) *2 | 21/12/2025 13:00 |
| Chatham Roadside Timeseries Graph |
n/m | 51 (1 Low) | n/m | 13 (2 Low) | 25 (2 Low) *1 | 21/12/2025 13:00 |
| Chilbolton Observatory Timeseries Graph |
70 (3 Low) | 5 (1 Low) | 2 (1 Low) | 4 (1 Low) | 7 (1 Low) *2 | 21/12/2025 04:15 |
| Eastbourne Timeseries Graph |
61 (2 Low) | 13 (1 Low) | n/m | 6 (1 Low) | 10 (1 Low) *2 | 21/12/2025 08:00 |
| Farnborough Cherrywood Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 11 (1 Low) *2 | 20/12/2025 24:00 |
| Horley Timeseries Graph |
n/m | 17 (1 Low) | n/m | 9 (1 Low) | 13 (1 Low) *2 | 21/12/2025 13:00 |
| Lullington Heath Timeseries Graph |
n/a | n/a | 2 (1 Low) | 6 (1 Low) | 10 (1 Low) *2 | 21/12/2025 11:00 |
| Maidstone Upper Stone Street Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 14 (1 Low) *2 | 21/12/2025 13:00 |
| Milton Keynes Civic Centre Timeseries Graph |
38 (2 Low) | n/m | n/m | 12 (2 Low) | 15 (1 Low) *2 | 21/12/2025 13:00 |
| Oxford Centre Roadside Timeseries Graph |
n/m | n/a | n/m | n/m | n/m | 19/08/2025 16:00 |
| Oxford St Ebbes Timeseries Graph |
48 (2 Low) | 20 (1 Low) | n/m | 7 (1 Low) | 10 (1 Low) *2 | 21/12/2025 13:00 |
| Portsmouth Timeseries Graph |
66 (2 Low) | 16 (1 Low) | n/m | 6 (1 Low) | 10 (1 Low) *2 | 20/12/2025 24:00 |
| Portsmouth Anglesea Road Timeseries Graph |
n/m | 21 (1 Low) | n/m | 6 (1 Low) | 12 (1 Low) *2 | 21/12/2025 12:00 |
| Reading London Road Timeseries Graph |
n/m | 45 (1 Low) | n/m | n/m | 18 (2 Low) *1 | 20/12/2025 21:00 |
| Reading New Town Timeseries Graph |
40 (2 Low) | 24 (1 Low) | n/m | 9 (1 Low) | 12 (1 Low) *2 | 21/12/2025 13:00 |
| Reading Rose Kiln Lane Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | n/m | 21/12/2025 13:00 |
| Rochester Stoke Timeseries Graph |
46 (2 Low) | 27 (1 Low) | 5 (1 Low) | 13 (2 Low) | 17 (2 Low) *2 | 20/12/2025 19:30 |
| Slough Windmill Bath Road Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 16 (1 Low) *2 | 21/12/2025 13:00 |
| Southampton A33 Timeseries Graph |
n/m | 54 (1 Low) | n/m | 7 (1 Low) | 13 (1 Low) *2 | 20/12/2025 24:00 |
| Southampton Centre Timeseries Graph |
50 (2 Low) | 30 (1 Low) | 3 (1 Low) | 8 (1 Low) | 14 (1 Low) *2 | 20/12/2025 15:45 |
| Storrington Roadside Timeseries Graph |
n/m | 30 (1 Low) | n/m | 6 (1 Low) | 10 (1 Low) *2 | 21/12/2025 13:00 |
| Worthing A27 Roadside Timeseries Graph |
n/m | 28 (1 Low) | n/m | 10 (1 Low) | n/m | 21/12/2025 08:00 |
| Worthing East Ten Acres Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 16 (1 Low) *2 | 21/12/2025 13:00 |
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 |
63 (2 Low) | 17 (1 Low) | 3 (1 Low) | 9 (1 Low) | 13 (1 Low) *1 | 21/12/2025 00:30 |
| Cardiff Newport Road Timeseries Graph |
n/m | 44 (1 Low) | n/m | n/m | 17 (2 Low) *1 | 20/12/2025 16:00 |
| Chepstow A48 Timeseries Graph |
n/m | 49 (1 Low) | n/m | 7 (1 Low) | 13 (1 Low) *1 | 20/12/2025 24:00 |
| Cwmbran Crownbridge Timeseries Graph |
61 (2 Low) | 11 (1 Low) | n/m | n/m | n/m | 20/12/2025 21:00 |
| Hafod-yr-ynys Hill Roadside Timeseries Graph |
n/m | 43 (1 Low) | n/m | n/m | n/m | 21/12/2025 10:00 |
| Narberth Timeseries Graph |
75 (3 Low) | 4 (1 Low) | 6 (1 Low) | 5 (1 Low) | 10 (1 Low) *2 | 20/12/2025 20:15 |
| Newport Timeseries Graph |
n/m | 24 (1 Low) | n/m | 5 (1 Low) | 9 (1 Low) *2 | 21/12/2025 13:00 |
| Port Talbot Margam Timeseries Graph |
67 (3 Low) | 8 (1 Low) | 2 (1 Low) | 3 (1 Low) | 10 (1 Low) *3 | 20/12/2025 18:30 |
| Swansea Roadside Timeseries Graph |
n/m | 47 (1 Low) | n/m | 5 (1 Low) | 13 (1 Low) *1 | 21/12/2025 05:00 |
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 | 4 (1 Low) | 7 (1 Low) *2 | 20/12/2025 24:00 |
| Bath A4 Roadside Timeseries Graph |
n/m | 49 (1 Low) | n/m | n/m | n/m | 21/12/2025 01:00 |
| Bournemouth Timeseries Graph |
70 (3 Low) | 11 (1 Low) | n/m | 7 (1 Low) | n/m | 21/12/2025 02:00 |
| Bristol Patchway Timeseries Graph |
n/m | n/m | n/m | 5 (1 Low) | 8 (1 Low) *2 | 21/12/2025 13:00 |
| Bristol St Paul's Timeseries Graph |
57 (2 Low) | 21 (1 Low) | n/m | 6 (1 Low) | 13 (1 Low) *1 | 21/12/2025 11:00 |
| Bristol Temple Way Timeseries Graph |
n/m | 37 (1 Low) | n/m | 6 (1 Low) | 10 (1 Low) *2 | 20/12/2025 24:00 |
| Charlton Mackrell Timeseries Graph |
66 (2 Low) | 7 (1 Low) | n/m | 5 (1 Low) | 8 (1 Low) *2 | 21/12/2025 13:00 |
| Cheltenham A40 Gloucester Road Timeseries Graph |
n/m | n/m | n/m | 4 (1 Low) | n/m | 21/12/2025 11:00 |
| Christchurch Barrack Road Timeseries Graph |
n/m | 42 (1 Low) | n/m | 7 (1 Low) | n/m | 20/12/2025 24:00 |
| Exeter Roadside Timeseries Graph |
65 (2 Low) | 51 (1 Low) | n/m | n/m | n/m | 20/12/2025 17:00 |
| Gloucester Tredworth Timeseries Graph |
n/m | n/m | n/m | 6 (1 Low) | 9 (1 Low) *2 | 21/12/2025 13:00 |
| Honiton Timeseries Graph |
73 (3 Low) | 10 (1 Low) | n/m | 5 (1 Low) | 9 (1 Low) *2 | 20/12/2025 24:00 |
| Plymouth Centre Timeseries Graph |
72 (3 Low) | 25 (1 Low) | n/m | 8 (1 Low) | 19 (2 Low) *2 | 20/12/2025 24:00 |
| Plymouth Tavistock Road Timeseries Graph |
n/m | 11 (1 Low) | n/m | n/m | n/m | 21/12/2025 11:00 |
| Saltash Callington Road Timeseries Graph |
n/m | n/m | n/m | 3 (1 Low) | 15 (1 Low) *1 | 21/12/2025 13:00 |
| Swindon Walcot Timeseries Graph |
60 (2 Low) | 14 (1 Low) | n/m | 6 (1 Low) | 8 (1 Low) *2 | 21/12/2025 13:00 |
| Yarner Wood Timeseries Graph |
73 (3 Low) | 7 (1 Low) | n/m | 4 (1 Low) | 7 (1 Low) *2 | 20/12/2025 24:00 |
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 |
78 (3 Low) | n/m | n/m | n/m | n/m | 20/12/2025 15:00 |
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 |
38 (2 Low) | 36 (1 Low) | n/m | 11 (1 Low) | 14 (1 Low) *2 | 21/12/2025 13:00 |
| Birmingham Hall Green Timeseries Graph |
51 (2 Low) | 23 (1 Low) | n/m | 10 (1 Low) | 14 (1 Low) *2 | 21/12/2025 13:00 |
| Birmingham Ladywood Timeseries Graph |
n/a | 51 (1 Low) | 1 (1 Low) | 11 (1 Low) | 14 (1 Low) *2 | 20/12/2025 19:15 |
| Birmingham University Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 14 (1 Low) *2 | 21/12/2025 13:00 |
| Burton-on-Trent Horninglow Timeseries Graph |
46 (2 Low) | 26 (1 Low) | n/m | 12 (2 Low) | 15 (1 Low) *2 | 21/12/2025 13:00 |
| Cannock A5190 Roadside Timeseries Graph |
n/m | 36 (1 Low) | n/m | 9 (1 Low) | n/m | 21/12/2025 13:00 |
| Coventry Allesley Timeseries Graph |
40 (2 Low) | 37 (1 Low) | n/m | 10 (1 Low) | 13 (1 Low) *2 | 21/12/2025 13:00 |
| Coventry Binley Road Timeseries Graph |
n/m | 47 (1 Low) | n/m | 10 (1 Low) | 14 (1 Low) *2 | 21/12/2025 13:00 |
| Leamington Spa Timeseries Graph |
43 (2 Low) | 22 (1 Low) | n/m | 10 (1 Low) | 13 (1 Low) *2 | 21/12/2025 13:00 |
| Leamington Spa Rugby Road Timeseries Graph |
n/m | 31 (1 Low) | n/m | 10 (1 Low) | 13 (1 Low) *2 | 21/12/2025 13:00 |
| Leominster Timeseries Graph |
54 (2 Low) | 9 (1 Low) | n/m | n/m | n/m | 20/12/2025 22:00 |
| Oldbury Birmingham Road Timeseries Graph |
n/m | 54 (1 Low) | n/m | 11 (1 Low) | 15 (1 Low) *2 | 21/12/2025 11:00 |
| Shrewsbury Underdale Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 12 (1 Low) *2 | 21/12/2025 13:00 |
| Stoke-on-Trent A50 Roadside Timeseries Graph |
n/m | 52 (1 Low) | n/m | 11 (1 Low) | 13 (1 Low) *2 | 21/12/2025 13:00 |
| Stoke-on-Trent Centre Timeseries Graph |
47 (2 Low) | 21 (1 Low) | n/m | 9 (1 Low) | 12 (1 Low) *2 | 21/12/2025 13:00 |
| Telford Hollinswood Timeseries Graph |
51 (2 Low) | 33 (1 Low) | n/m | 9 (1 Low) | 12 (1 Low) *2 | 21/12/2025 13:00 |
| Walsall Woodlands Timeseries Graph |
45 (2 Low) | 33 (1 Low) | n/m | n/m | n/m | 21/12/2025 05:00 |
| West Bromwich Kenrick Park Timeseries Graph |
44 (2 Low) | 45 (1 Low) | n/m | n/m | n/m | 20/12/2025 15:00 |
| Worcester Tolladine Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 12 (1 Low) *2 | 21/12/2025 13:00 |
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 |
42 (2 Low) | 31 (1 Low) | 3 (1 Low) | 15 (2 Low) | 19 (2 Low) *2 | 21/12/2025 03:15 |
| Bradford Mayo Avenue Timeseries Graph |
n/m | 52 (1 Low) | n/m | n/m | n/m | 21/12/2025 12:00 |
| Bradford Shipley Airedale Road Timeseries Graph |
n/m | n/m | n/m | 15 (2 Low) | 18 (2 Low) *2 | 21/12/2025 10:00 |
| Dewsbury Ashworth Grange Timeseries Graph |
41 (2 Low) | 29 (1 Low) | n/m | 14 (2 Low) | 19 (2 Low) *2 | 21/12/2025 13:00 |
| Doncaster A630 Cleveland Street Timeseries Graph |
n/m | 40 (1 Low) | n/m | 15 (2 Low) | n/m | 21/12/2025 13:00 |
| Harrogate Woodlands Timeseries Graph |
n/m | n/m | n/m | 12 (2 Low) | 15 (1 Low) *2 | 21/12/2025 13:00 |
| High Muffles Timeseries Graph |
n/a | n/a | n/m | n/a | n/a | 20/12/2025 04:00 |
| Hull Freetown Timeseries Graph |
39 (2 Low) | 36 (1 Low) | 2 (1 Low) | 13 (2 Low) | 18 (2 Low) *2 | 21/12/2025 11:30 |
| Hull Holderness Road Timeseries Graph |
n/m | 48 (1 Low) | n/m | 13 (2 Low) | 17 (2 Low) *2 | 21/12/2025 13:00 |
| Immingham Woodlands Avenue Timeseries Graph |
51 (2 Low) | 32 (1 Low) | n/m | 13 (2 Low) | 17 (2 Low) *2 | 21/12/2025 13:00 |
| Leeds Centre Timeseries Graph |
37 (2 Low) | 36 (1 Low) | 2 (1 Low) | 14 (2 Low) | 18 (2 Low) *2 | 21/12/2025 02:30 |
| Leeds Headingley Kerbside Timeseries Graph |
n/m | 42 (1 Low) | n/m | 15 (2 Low) | 23 (2 Low) *1 | 21/12/2025 13:00 |
| Rotherham East Dene Timeseries Graph |
n/m | n/m | n/m | 18 (2 Low) | 22 (2 Low) *2 | 21/12/2025 12:00 |
| Scunthorpe Town Timeseries Graph |
n/m | 26 (1 Low) | 4 (1 Low) | 16 (2 Low) | 29 (2 Low) *1 | 20/12/2025 22:00 |
| Sheffield Barnsley Road Timeseries Graph |
n/m | 40 (1 Low) | n/m | 14 (2 Low) | n/m | 21/12/2025 13:00 |
| Sheffield Devonshire Green Timeseries Graph |
33 (1 Low) | 41 (1 Low) | n/m | 14 (2 Low) | 19 (2 Low) *2 | 21/12/2025 13:00 |
| Sheffield Tinsley Timeseries Graph |
38 (2 Low) | 25 (1 Low) | n/m | 12 (2 Low) | 16 (1 Low) *2 | 21/12/2025 13:00 |
| Wakefield Alverthorpe Timeseries Graph |
n/m | n/m | n/m | 15 (2 Low) | 19 (2 Low) *2 | 21/12/2025 12:00 |
| York Bootham Timeseries Graph |
38 (2 Low) | 18 (1 Low) | n/m | 10 (1 Low) | 18 (2 Low) *1 | 21/12/2025 13:00 |
| York Fishergate Timeseries Graph |
n/m | 32 (1 Low) | n/m | 10 (1 Low) | 20 (2 Low) *1 | 21/12/2025 13:00 |
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