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 2am Tue 23rd 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 |
44 (2 Low) | n/m | n/m | 8 (1 Low) | 11 (1 Low) *2 | 23/12/2025 02:00 |
| Bush Estate Timeseries Graph |
45 (2 Low) | 20 (1 Low) | n/m | n/m | n/m | 22/12/2025 07:00 |
| Dumbarton Roadside Timeseries Graph |
n/m | 38 (1 Low) | n/m | n/m | n/m | 22/12/2025 18:00 |
| Edinburgh Nicolson Street Timeseries Graph |
n/m | 33 (1 Low) | n/m | n/m | n/m | 22/12/2025 19:00 |
| Edinburgh St Leonards Timeseries Graph |
38 (2 Low) | 21 (1 Low) | 1 (1 Low) | 12 (2 Low) | 16 (1 Low) *2 | 23/12/2025 01:30 |
| Glasgow Great Western Road Timeseries Graph |
n/m | 30 (1 Low) | n/m | n/m | n/m | 22/12/2025 17:00 |
| Glasgow High Street Timeseries Graph |
n/m | 29 (1 Low) | n/m | 11 (1 Low) | 15 (1 Low) *2 | 23/12/2025 02:00 |
| Glasgow Kerbside Timeseries Graph |
n/m | 64 (1 Low) | n/m | n/m | n/m | 22/12/2025 18:00 |
| Glasgow Townhead Timeseries Graph |
41 (2 Low) | 28 (1 Low) | n/m | 10 (1 Low) | 14 (1 Low) *2 | 23/12/2025 02:00 |
| Grangemouth Timeseries Graph |
n/m | 19 (1 Low) | 0 (1 Low) | 10 (1 Low) | 15 (1 Low) *1 | 23/12/2025 01:30 |
| Grangemouth Moray Timeseries Graph |
n/m | 19 (1 Low) | n/m | n/m | n/m | 22/12/2025 21:00 |
| Greenock A8 Roadside Timeseries Graph |
n/m | 53 (1 Low) | n/m | 8 (1 Low) | 12 (1 Low) *2 | 23/12/2025 02:00 |
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 |
19 (1 Low) | 30 (1 Low) | n/m | 22 (2 Low) | 30 (2 Low) *2 | 23/12/2025 02:00 |
| Chesterfield Roadside Timeseries Graph |
n/m | 36 (1 Low) | n/m | 23 (2 Low) | 32 (2 Low) *2 | 23/12/2025 02:00 |
| Derby St Alkmund's Way Timeseries Graph |
n/m | 31 (1 Low) | n/m | 24 (3 Low) | n/m | 23/12/2025 02:00 |
| Derby Stockbrook Park Timeseries Graph |
18 (1 Low) | n/m | n/m | 22 (2 Low) | 29 (2 Low) *2 | 23/12/2025 02:00 |
| Ladybower Timeseries Graph |
27 (1 Low) | 23 (1 Low) | 5 (1 Low) | 16 (2 Low) | 18 (2 Low) *2 | 22/12/2025 13:15 |
| Leicester A594 Roadside Timeseries Graph |
n/m | 32 (1 Low) | n/m | 22 (2 Low) | 28 (2 Low) *2 | 23/12/2025 02:00 |
| Leicester University Timeseries Graph |
22 (1 Low) | 27 (1 Low) | n/m | 21 (2 Low) | 26 (2 Low) *2 | 23/12/2025 02:00 |
| Lincoln Canwick Road Timeseries Graph |
n/m | 32 (1 Low) | n/m | n/m | n/m | 22/12/2025 19:00 |
| Loughborough Thorpe Acre Timeseries Graph |
n/m | n/m | n/m | 21 (2 Low) | 26 (2 Low) *2 | 23/12/2025 02:00 |
| Mansfield Ladybrook Timeseries Graph |
n/m | n/m | n/m | 23 (2 Low) | 31 (2 Low) *2 | 23/12/2025 02:00 |
| Northampton Spring Park Timeseries Graph |
21 (1 Low) | 32 (1 Low) | n/m | 26 (3 Low) | n/m | 23/12/2025 02:00 |
| Nottingham Bilborough Timeseries Graph |
n/m | n/m | n/m | 22 (2 Low) | 29 (2 Low) *2 | 23/12/2025 02:00 |
| Nottingham Kenmore Gardens Timeseries Graph |
15 (1 Low) | 27 (1 Low) | 1 (1 Low) | 24 (3 Low) | 33 (2 Low) *2 | 23/12/2025 00:45 |
| Nottingham Western Boulevard Timeseries Graph |
n/m | 33 (1 Low) | n/m | 22 (2 Low) | 31 (2 Low) *2 | 23/12/2025 02:00 |
| Tallington Timeseries Graph |
20 (1 Low) | n/m | n/m | 21 (2 Low) | 28 (2 Low) *2 | 23/12/2025 02:00 |
| Toft Newton Timeseries Graph |
26 (1 Low) | 21 (1 Low) | n/m | 18 (2 Low) | 24 (2 Low) *2 | 22/12/2025 24:00 |
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 | 16 (2 Low) | 22 (2 Low) *2 | 22/12/2025 24:00 |
| Cambridge King's Hedges Timeseries Graph |
n/m | n/m | n/m | 16 (2 Low) | 23 (2 Low) *2 | 22/12/2025 24:00 |
| Cambridge Roadside Timeseries Graph |
n/m | 35 (1 Low) | n/m | n/m | n/m | 22/12/2025 19:00 |
| Luton A505 Roadside Timeseries Graph |
n/m | 64 (1 Low) | n/m | 19 (2 Low) | n/m | 23/12/2025 02:00 |
| Norwich Lakenfields Timeseries Graph |
18 (1 Low) | 36 (1 Low) | n/m | 16 (2 Low) | 21 (2 Low) *2 | 23/12/2025 02:00 |
| Peterborough Garton End Timeseries Graph |
n/m | n/m | n/m | 17 (2 Low) | 23 (2 Low) *2 | 22/12/2025 24:00 |
| Sibton Timeseries Graph |
17 (1 Low) | n/m | n/m | 12 (2 Low) | 17 (2 Low) *2 | 23/12/2025 02:00 |
| Southend Shoeburyness Timeseries Graph |
n/m | n/m | n/m | 12 (2 Low) | 17 (2 Low) *2 | 23/12/2025 02:00 |
| Southend-on-Sea Timeseries Graph |
13 (1 Low) | 38 (1 Low) | n/m | 14 (2 Low) | 20 (2 Low) *2 | 23/12/2025 02:00 |
| St Osyth Timeseries Graph |
21 (1 Low) | 32 (1 Low) | n/m | 13 (2 Low) | 19 (2 Low) *2 | 23/12/2025 02:00 |
| Stanford-le-Hope Roadside Timeseries Graph |
n/m | 48 (1 Low) | n/m | 18 (2 Low) | 26 (2 Low) *1 | 22/12/2025 13:00 |
| Thurrock Timeseries Graph |
6 (1 Low) | 40 (1 Low) | 3 (1 Low) | 16 (2 Low) | 23 (2 Low) *2 | 22/12/2025 13:30 |
| Weybourne Timeseries Graph |
28 (1 Low) | n/m | n/m | 17 (2 Low) | 24 (2 Low) *2 | 22/12/2025 24:00 |
| Wicken Fen Timeseries Graph |
16 (1 Low) | 33 (1 Low) | 3 (1 Low) | 14 (2 Low) | 20 (2 Low) *2 | 22/12/2025 16:15 |
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 | 47 (1 Low) | n/m | 19 (2 Low) | 30 (2 Low) *1 | 23/12/2025 02:00 |
| Ealing Horn Lane Timeseries Graph |
n/m | n/m | n/m | n/m | 26 (2 Low) *1 | 23/12/2025 01:00 |
| Haringey Roadside Timeseries Graph |
n/m | 45 (1 Low) | n/m | n/m | n/m | 22/12/2025 18:00 |
| London Bexley Timeseries Graph |
n/m | 40 (1 Low) | n/m | 18 (2 Low) | 26 (2 Low) *2 | 22/12/2025 24:00 |
| London Bloomsbury Timeseries Graph |
3 (1 Low) | 45 (1 Low) | 4 (1 Low) | 16 (2 Low) | 23 (2 Low) *2 | 22/12/2025 10:00 |
| London Farringdon Street Timeseries Graph |
n/m | 45 (1 Low) | n/m | 18 (2 Low) | n/m | 22/12/2025 24:00 |
| London Haringey Priory Park South Timeseries Graph |
12 (1 Low) | 37 (1 Low) | n/m | 14 (2 Low) | 20 (2 Low) *2 | 23/12/2025 02:00 |
| London Harlington Timeseries Graph |
18 (1 Low) | 47 (1 Low) | n/m | 12 (2 Low) | 18 (2 Low) *2 | 22/12/2025 21:00 |
| London Hillingdon Timeseries Graph |
16 (1 Low) | 38 (1 Low) | n/m | 15 (2 Low) | 22 (2 Low) *2 | 23/12/2025 01:00 |
| London Honor Oak Park Timeseries Graph |
11 (1 Low) | n/m | n/m | 14 (2 Low) | 20 (2 Low) *2 | 22/12/2025 24:00 |
| London Marylebone Road Timeseries Graph |
8 (1 Low) | 40 (1 Low) | 3 (1 Low) | 21 (2 Low) | 26 (2 Low) *1 | 22/12/2025 09:45 |
| London N. Kensington Timeseries Graph |
13 (1 Low) | 39 (1 Low) | 3 (1 Low) | 15 (2 Low) | 22 (2 Low) *2 | 22/12/2025 08:15 |
| London Norbury Manor School Timeseries Graph |
n/m | n/m | n/m | 15 (2 Low) | 21 (2 Low) *2 | 22/12/2025 24:00 |
| London Teddington Bushy Park Timeseries Graph |
n/m | n/m | n/m | 14 (2 Low) | 20 (2 Low) *2 | 23/12/2025 01:00 |
| London Westminster Timeseries Graph |
6 (1 Low) | 42 (1 Low) | n/m | n/m | n/m | 22/12/2025 03:00 |
| Southwark A2 Old Kent Road Timeseries Graph |
n/m | 55 (1 Low) | n/m | n/m | 34 (3 Low) *1 | 22/12/2025 14:00 |
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 |
45 (2 Low) | 26 (1 Low) | n/m | n/m | n/m | 22/12/2025 03:00 |
| Inverness Timeseries Graph |
n/m | 59 (1 Low) | n/m | 14 (2 Low) | 18 (2 Low) *2 | 22/12/2025 24:00 |
| Lerwick Timeseries Graph |
73 (3 Low) | n/m | n/m | n/m | n/m | 22/12/2025 03:00 |
| Strathvaich Timeseries Graph |
57 (2 Low) | n/m | n/m | n/m | n/m | 22/12/2025 03:00 |
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 |
35 (2 Low) | 11 (1 Low) | n/m | 25 (3 Low) | 62 (5 Moderate) *2 | 23/12/2025 02:00 |
| Kielder Water Timeseries Graph |
36 (2 Low) | n/m | n/m | 11 (1 Low) | 16 (1 Low) *2 | 23/12/2025 02:00 |
| Middlesbrough Timeseries Graph |
34 (2 Low) | 35 (1 Low) | 4 (1 Low) | 12 (2 Low) | 24 (2 Low) *1 | 22/12/2025 11:45 |
| Newcastle Centre Timeseries Graph |
32 (1 Low) | 32 (1 Low) | n/m | 14 (2 Low) | 28 (2 Low) *1 | 23/12/2025 02:00 |
| Newcastle Cradlewell Roadside Timeseries Graph |
n/m | 65 (1 Low) | n/m | 16 (2 Low) | 25 (2 Low) *2 | 23/12/2025 02:00 |
| Stockton-on-Tees A1305 Roadside Timeseries Graph |
n/m | 66 (1 Low) | n/m | 14 (2 Low) | n/m | 22/12/2025 19:00 |
| Stockton-on-Tees Eaglescliffe Timeseries Graph |
n/m | 43 (1 Low) | n/m | 14 (2 Low) | 31 (2 Low) *1 | 22/12/2025 22:00 |
| Sunderland Silksworth Timeseries Graph |
35 (2 Low) | n/a | n/m | 17 (2 Low) | 29 (2 Low) *2 | 23/12/2025 02:00 |
| Sunderland Wessington Way Timeseries Graph |
n/m | 33 (1 Low) | n/m | 17 (2 Low) | n/m | 23/12/2025 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 |
52 (2 Low) | 30 (1 Low) | n/m | 12 (2 Low) | 26 (2 Low) *2 | 23/12/2025 02:00 |
| Aberdeen Wellington Road Timeseries Graph |
n/m | 50 (1 Low) | n/m | n/m | n/m | 22/12/2025 09:00 |
| Dundee Mains Loan Timeseries Graph |
n/m | 16 (1 Low) | n/m | n/m | n/m | 22/12/2025 17:00 |
| Perth Glasgow Road Timeseries Graph |
n/m | 23 (1 Low) | n/m | n/m | n/m | 22/12/2025 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 |
42 (2 Low) | 22 (1 Low) | n/m | n/m | n/m | 22/12/2025 05:00 |
| Wrexham Timeseries Graph |
n/m | 29 (1 Low) | 3 (1 Low) | 20 (2 Low) | 25 (2 Low) *2 | 22/12/2025 17:00 |
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 | 41 (1 Low) | n/m | 19 (2 Low) | n/m | 23/12/2025 02:00 |
| Blackburn Accrington Road Timeseries Graph |
n/m | 31 (1 Low) | n/m | n/m | n/m | 22/12/2025 18:00 |
| Blackburn Audley Park Timeseries Graph |
28 (1 Low) | n/m | n/m | 19 (2 Low) | 23 (2 Low) *2 | 23/12/2025 02:00 |
| Blackpool Marton Timeseries Graph |
29 (1 Low) | 24 (1 Low) | n/m | 18 (2 Low) | 23 (2 Low) *2 | 23/12/2025 02:00 |
| Blackpool Whitegate Drive Timeseries Graph |
n/m | n/m | n/m | 19 (2 Low) | n/m | 23/12/2025 02:00 |
| Bury Whitefield Roadside Timeseries Graph |
n/m | 33 (1 Low) | n/m | n/m | 23 (2 Low) *1 | 22/12/2025 19:00 |
| Carlisle Morton A595 Timeseries Graph |
n/m | 34 (1 Low) | n/m | 11 (1 Low) | 16 (1 Low) *1 | 22/12/2025 24:00 |
| Crewe Coppenhall Timeseries Graph |
27 (1 Low) | 26 (1 Low) | n/m | 19 (2 Low) | 23 (2 Low) *2 | 23/12/2025 02:00 |
| Glazebury Timeseries Graph |
22 (1 Low) | 33 (1 Low) | n/m | 16 (2 Low) | 21 (2 Low) *2 | 23/12/2025 02:00 |
| Liverpool Speke Timeseries Graph |
17 (1 Low) | 34 (1 Low) | 4 (1 Low) | 16 (2 Low) | 23 (2 Low) *1 | 22/12/2025 12:45 |
| Liverpool Thirlmere Park Timeseries Graph |
16 (1 Low) | n/m | n/m | 17 (2 Low) | 22 (2 Low) *2 | 23/12/2025 02:00 |
| Manchester Piccadilly Timeseries Graph |
24 (1 Low) | 41 (1 Low) | 2 (1 Low) | 22 (2 Low) | 25 (2 Low) *2 | 22/12/2025 10:45 |
| Manchester Sharston Timeseries Graph |
27 (1 Low) | 33 (1 Low) | n/m | 18 (2 Low) | 22 (2 Low) *2 | 23/12/2025 02:00 |
| Middlewich St Michael's Way Timeseries Graph |
n/m | n/m | n/m | 18 (2 Low) | n/m | 23/12/2025 02:00 |
| Preston Timeseries Graph |
26 (1 Low) | 25 (1 Low) | n/m | 17 (2 Low) | 21 (2 Low) *2 | 23/12/2025 02:00 |
| Salford Eccles Timeseries Graph |
25 (1 Low) | 39 (1 Low) | n/m | 20 (2 Low) | 25 (2 Low) *2 | 23/12/2025 02:00 |
| Shaw Crompton Way Timeseries Graph |
n/m | 32 (1 Low) | n/m | n/m | n/m | 22/12/2025 14:00 |
| St Helens Linkway Timeseries Graph |
n/m | n/a | n/m | n/m | 20 (2 Low) *1 | 13/12/2025 09:00 |
| Tameside A635 Manchester Road Timeseries Graph |
n/m | n/m | n/m | 15 (2 Low) | n/m | 23/12/2025 02:00 |
| Warrington Timeseries Graph |
n/m | 31 (1 Low) | n/m | 17 (2 Low) | 24 (2 Low) *1 | 23/12/2025 02:00 |
| Widnes Milton Road Timeseries Graph |
n/m | 58 (1 Low) | n/m | n/m | n/m | 22/12/2025 15:00 |
| Wigan Centre Timeseries Graph |
23 (1 Low) | 45 (1 Low) | n/m | 20 (2 Low) | 26 (2 Low) *2 | 23/12/2025 02:00 |
| Wirral Tranmere Timeseries Graph |
21 (1 Low) | 30 (1 Low) | n/m | 17 (2 Low) | 21 (2 Low) *2 | 23/12/2025 02:00 |
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 | 22 (2 Low) *1 | 22/12/2025 18:00 |
| Ballymena Antrim Road Timeseries Graph |
n/m | 29 (1 Low) | n/m | n/m | n/m | 22/12/2025 21:00 |
| Ballymena Ballykeel Timeseries Graph |
n/m | 19 (1 Low) | 15 (1 Low) | n/m | n/m | 22/12/2025 20:30 |
| Belfast Centre Timeseries Graph |
33 (1 Low) | 29 (1 Low) | 4 (1 Low) | 11 (1 Low) | 15 (1 Low) *2 | 22/12/2025 13:15 |
| Belfast Stockman's Lane Timeseries Graph |
n/m | 50 (1 Low) | n/m | n/m | 25 (2 Low) *1 | 22/12/2025 16:00 |
| Derry Rosemount Timeseries Graph |
32 (1 Low) | 33 (1 Low) | 16 (1 Low) | 9 (1 Low) | 18 (2 Low) *1 | 22/12/2025 23:30 |
| Lough Navar Timeseries Graph |
37 (2 Low) | n/m | n/m | 8 (1 Low) | 11 (1 Low) *2 | 23/12/2025 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 | 44 (1 Low) | n/m | n/m | n/m | 22/12/2025 18:00 |
| Eskdalemuir Timeseries Graph |
39 (2 Low) | 5 (1 Low) | n/m | n/m | n/m | 22/12/2025 14:00 |
| Peebles Timeseries Graph |
51 (2 Low) | 18 (1 Low) | n/m | n/m | n/m | 22/12/2025 06:00 |
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 | 15 (2 Low) | n/m | 23/12/2025 02:00 |
| Brighton Preston Park Timeseries Graph |
38 (2 Low) | 31 (1 Low) | n/m | 8 (1 Low) | 13 (1 Low) *2 | 23/12/2025 02:00 |
| Chatham Roadside Timeseries Graph |
n/m | 40 (1 Low) | n/m | 14 (2 Low) | 26 (2 Low) *1 | 23/12/2025 01:00 |
| Chilbolton Observatory Timeseries Graph |
55 (2 Low) | 11 (1 Low) | 2 (1 Low) | 7 (1 Low) | 10 (1 Low) *2 | 22/12/2025 14:45 |
| Eastbourne Timeseries Graph |
37 (2 Low) | 23 (1 Low) | n/m | 10 (1 Low) | 14 (1 Low) *2 | 23/12/2025 02:00 |
| Farnborough Cherrywood Timeseries Graph |
n/m | n/m | n/m | 13 (2 Low) | 18 (2 Low) *2 | 23/12/2025 02:00 |
| Horley Timeseries Graph |
n/m | 25 (1 Low) | n/m | 14 (2 Low) | 21 (2 Low) *2 | 23/12/2025 02:00 |
| Lullington Heath Timeseries Graph |
n/a | n/a | 3 (1 Low) | 9 (1 Low) | 14 (1 Low) *2 | 22/12/2025 11:00 |
| Maidstone Upper Stone Street Timeseries Graph |
n/m | n/m | n/m | 15 (2 Low) | 20 (2 Low) *2 | 23/12/2025 02:00 |
| Milton Keynes Civic Centre Timeseries Graph |
16 (1 Low) | n/m | n/m | 20 (2 Low) | 27 (2 Low) *2 | 22/12/2025 24:00 |
| 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 |
35 (2 Low) | 30 (1 Low) | n/m | 12 (2 Low) | 16 (1 Low) *2 | 23/12/2025 02:00 |
| Portsmouth Timeseries Graph |
52 (2 Low) | 40 (1 Low) | n/m | 6 (1 Low) | 11 (1 Low) *2 | 23/12/2025 02:00 |
| Portsmouth Anglesea Road Timeseries Graph |
n/m | 25 (1 Low) | n/m | 7 (1 Low) | 11 (1 Low) *2 | 23/12/2025 02:00 |
| Reading London Road Timeseries Graph |
n/m | 41 (1 Low) | n/m | n/m | 18 (2 Low) *1 | 22/12/2025 18:00 |
| Reading New Town Timeseries Graph |
21 (1 Low) | 34 (1 Low) | n/m | 13 (2 Low) | 19 (2 Low) *2 | 23/12/2025 02:00 |
| Reading Rose Kiln Lane Timeseries Graph |
n/m | n/m | n/m | 13 (2 Low) | n/m | 23/12/2025 02:00 |
| Rochester Stoke Timeseries Graph |
12 (1 Low) | 37 (1 Low) | 3 (1 Low) | 14 (2 Low) | 19 (2 Low) *2 | 22/12/2025 06:15 |
| Slough Windmill Bath Road Timeseries Graph |
n/m | n/m | n/m | 16 (2 Low) | 23 (2 Low) *2 | 23/12/2025 02:00 |
| Southampton A33 Timeseries Graph |
n/m | 77 (2 Low) | n/m | 7 (1 Low) | 12 (1 Low) *2 | 23/12/2025 02:00 |
| Southampton Centre Timeseries Graph |
50 (2 Low) | 57 (1 Low) | 5 (1 Low) | 8 (1 Low) | 14 (1 Low) *2 | 22/12/2025 08:30 |
| Storrington Roadside Timeseries Graph |
n/m | 38 (1 Low) | n/m | 10 (1 Low) | 17 (2 Low) *2 | 23/12/2025 02:00 |
| Worthing A27 Roadside Timeseries Graph |
n/m | 47 (1 Low) | n/m | 11 (1 Low) | n/m | 23/12/2025 02:00 |
| Worthing East Ten Acres Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | 15 (1 Low) *2 | 23/12/2025 02:00 |
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 |
46 (2 Low) | 29 (1 Low) | 2 (1 Low) | 9 (1 Low) | 11 (1 Low) *1 | 22/12/2025 17:15 |
| Cardiff Newport Road Timeseries Graph |
n/m | 53 (1 Low) | n/m | n/m | 16 (1 Low) *1 | 22/12/2025 15:00 |
| Chepstow A48 Timeseries Graph |
n/m | 44 (1 Low) | n/m | 10 (1 Low) | 17 (2 Low) *1 | 22/12/2025 24:00 |
| Cwmbran Crownbridge Timeseries Graph |
45 (2 Low) | 31 (1 Low) | n/m | n/m | n/m | 22/12/2025 07:00 |
| Hafod-yr-ynys Hill Roadside Timeseries Graph |
n/m | 48 (1 Low) | n/m | n/m | n/m | 22/12/2025 10:00 |
| Narberth Timeseries Graph |
68 (3 Low) | 8 (1 Low) | 3 (1 Low) | 4 (1 Low) | 6 (1 Low) *2 | 21/12/2025 20:45 |
| Newport Timeseries Graph |
n/m | 44 (1 Low) | n/m | 9 (1 Low) | 13 (1 Low) *2 | 23/12/2025 02:00 |
| Port Talbot Margam Timeseries Graph |
60 (2 Low) | 15 (1 Low) | 2 (1 Low) | 4 (1 Low) | 7 (1 Low) *3 | 22/12/2025 20:00 |
| Swansea Roadside Timeseries Graph |
n/m | 46 (1 Low) | n/m | 6 (1 Low) | 8 (1 Low) *1 | 23/12/2025 02:00 |
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 | 3 (1 Low) | 7 (1 Low) *2 | 23/12/2025 02:00 |
| Bath A4 Roadside Timeseries Graph |
n/m | 46 (1 Low) | n/m | n/m | n/m | 22/12/2025 19:00 |
| Bournemouth Timeseries Graph |
71 (3 Low) | 19 (1 Low) | n/m | 8 (1 Low) | n/m | 23/12/2025 02:00 |
| Bristol Patchway Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | 12 (1 Low) *2 | 23/12/2025 02:00 |
| Bristol St Paul's Timeseries Graph |
40 (2 Low) | 54 (1 Low) | n/m | 8 (1 Low) | 16 (1 Low) *1 | 23/12/2025 02:00 |
| Bristol Temple Way Timeseries Graph |
n/m | 59 (1 Low) | n/m | 9 (1 Low) | 16 (1 Low) *2 | 23/12/2025 02:00 |
| Charlton Mackrell Timeseries Graph |
54 (2 Low) | 8 (1 Low) | n/m | 5 (1 Low) | 9 (1 Low) *2 | 23/12/2025 02:00 |
| Cheltenham A40 Gloucester Road Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | n/m | 23/12/2025 02:00 |
| Christchurch Barrack Road Timeseries Graph |
n/m | 70 (2 Low) | n/m | 8 (1 Low) | n/m | 23/12/2025 02:00 |
| Exeter Roadside Timeseries Graph |
69 (3 Low) | 44 (1 Low) | n/m | n/m | n/m | 22/12/2025 15:00 |
| Gloucester Tredworth Timeseries Graph |
n/m | n/m | n/m | 15 (2 Low) | 20 (2 Low) *2 | 23/12/2025 02:00 |
| Honiton Timeseries Graph |
80 (3 Low) | 12 (1 Low) | n/m | 4 (1 Low) | 7 (1 Low) *2 | 23/12/2025 02:00 |
| Plymouth Centre Timeseries Graph |
69 (3 Low) | 21 (1 Low) | n/m | 5 (1 Low) | 12 (1 Low) *2 | 23/12/2025 02:00 |
| Plymouth Tavistock Road Timeseries Graph |
n/m | 15 (1 Low) | n/m | n/m | n/m | 22/12/2025 19:00 |
| Saltash Callington Road Timeseries Graph |
n/m | n/m | n/m | 3 (1 Low) | 14 (1 Low) *1 | 23/12/2025 02:00 |
| Swindon Walcot Timeseries Graph |
41 (2 Low) | 33 (1 Low) | n/m | 11 (1 Low) | 15 (1 Low) *2 | 23/12/2025 02:00 |
| Yarner Wood Timeseries Graph |
81 (3 Low) | 7 (1 Low) | n/m | 3 (1 Low) | 7 (1 Low) *2 | 23/12/2025 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 |
51 (2 Low) | n/m | n/m | n/m | n/m | 22/12/2025 02:00 |
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 |
24 (1 Low) | 38 (1 Low) | n/m | 24 (3 Low) | 31 (2 Low) *2 | 23/12/2025 02:00 |
| Birmingham Hall Green Timeseries Graph |
31 (1 Low) | 33 (1 Low) | n/m | 20 (2 Low) | 27 (2 Low) *2 | 23/12/2025 02:00 |
| Birmingham Ladywood Timeseries Graph |
n/a | 41 (1 Low) | 1 (1 Low) | 24 (3 Low) | 31 (2 Low) *2 | 22/12/2025 09:45 |
| Birmingham University Timeseries Graph |
n/m | n/m | n/m | 24 (3 Low) | 30 (2 Low) *2 | 23/12/2025 02:00 |
| Burton-on-Trent Horninglow Timeseries Graph |
20 (1 Low) | 31 (1 Low) | n/m | 22 (2 Low) | 28 (2 Low) *2 | 23/12/2025 02:00 |
| Cannock A5190 Roadside Timeseries Graph |
n/m | 36 (1 Low) | n/m | 22 (2 Low) | n/m | 23/12/2025 02:00 |
| Coventry Allesley Timeseries Graph |
25 (1 Low) | 30 (1 Low) | n/m | 21 (2 Low) | 26 (2 Low) *2 | 23/12/2025 02:00 |
| Coventry Binley Road Timeseries Graph |
n/m | 30 (1 Low) | n/m | 21 (2 Low) | 27 (2 Low) *2 | 23/12/2025 02:00 |
| Leamington Spa Timeseries Graph |
28 (1 Low) | 28 (1 Low) | n/m | 21 (2 Low) | 26 (2 Low) *2 | 23/12/2025 02:00 |
| Leamington Spa Rugby Road Timeseries Graph |
n/m | 30 (1 Low) | n/m | 21 (2 Low) | 26 (2 Low) *2 | 23/12/2025 02:00 |
| Leominster Timeseries Graph |
41 (2 Low) | 20 (1 Low) | n/m | n/m | n/m | 22/12/2025 04:00 |
| Oldbury Birmingham Road Timeseries Graph |
n/m | 39 (1 Low) | n/m | 24 (3 Low) | 31 (2 Low) *2 | 23/12/2025 02:00 |
| Shrewsbury Underdale Timeseries Graph |
n/m | n/m | n/m | 22 (2 Low) | 28 (2 Low) *2 | 23/12/2025 02:00 |
| Stoke-on-Trent A50 Roadside Timeseries Graph |
n/m | 50 (1 Low) | n/m | 22 (2 Low) | 28 (2 Low) *2 | 23/12/2025 02:00 |
| Stoke-on-Trent Centre Timeseries Graph |
29 (1 Low) | 30 (1 Low) | n/m | 19 (2 Low) | 24 (2 Low) *2 | 23/12/2025 02:00 |
| Telford Hollinswood Timeseries Graph |
29 (1 Low) | 28 (1 Low) | n/m | 21 (2 Low) | 26 (2 Low) *2 | 23/12/2025 02:00 |
| Walsall Woodlands Timeseries Graph |
27 (1 Low) | 29 (1 Low) | n/m | n/m | n/m | 22/12/2025 03:00 |
| West Bromwich Kenrick Park Timeseries Graph |
27 (1 Low) | 34 (1 Low) | n/m | n/m | n/m | 22/12/2025 03:00 |
| Worcester Tolladine Timeseries Graph |
n/m | n/m | n/m | 20 (2 Low) | 26 (2 Low) *2 | 23/12/2025 02:00 |
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 |
22 (1 Low) | 28 (1 Low) | 5 (1 Low) | 22 (2 Low) | 28 (2 Low) *2 | 22/12/2025 24:00 |
| Bradford Mayo Avenue Timeseries Graph |
n/m | 68 (2 Low) | n/m | n/m | n/m | 22/12/2025 17:00 |
| Bradford Shipley Airedale Road Timeseries Graph |
n/m | n/m | n/m | 21 (2 Low) | 30 (2 Low) *2 | 23/12/2025 02:00 |
| Dewsbury Ashworth Grange Timeseries Graph |
24 (1 Low) | 35 (1 Low) | n/m | 21 (2 Low) | 29 (2 Low) *2 | 23/12/2025 02:00 |
| Doncaster A630 Cleveland Street Timeseries Graph |
n/m | 41 (1 Low) | n/m | 22 (2 Low) | n/m | 23/12/2025 01:00 |
| Harrogate Woodlands Timeseries Graph |
n/m | n/m | n/m | 19 (2 Low) | 25 (2 Low) *2 | 23/12/2025 02:00 |
| High Muffles Timeseries Graph |
36 (2 Low) | 10 (1 Low) | n/m | 14 (2 Low) | 19 (2 Low) *2 | 23/12/2025 02:00 |
| Hull Freetown Timeseries Graph |
25 (1 Low) | 32 (1 Low) | 2 (1 Low) | 21 (2 Low) | 33 (2 Low) *2 | 22/12/2025 12:00 |
| Hull Holderness Road Timeseries Graph |
n/m | 33 (1 Low) | n/m | 22 (2 Low) | 31 (2 Low) *2 | 22/12/2025 24:00 |
| Immingham Woodlands Avenue Timeseries Graph |
29 (1 Low) | 30 (1 Low) | n/m | 19 (2 Low) | 27 (2 Low) *2 | 22/12/2025 24:00 |
| Leeds Centre Timeseries Graph |
26 (1 Low) | 32 (1 Low) | 2 (1 Low) | 22 (2 Low) | 29 (2 Low) *2 | 22/12/2025 22:00 |
| Leeds Headingley Kerbside Timeseries Graph |
n/m | 47 (1 Low) | n/m | 22 (2 Low) | 31 (2 Low) *1 | 23/12/2025 02:00 |
| Rotherham East Dene Timeseries Graph |
n/m | n/m | n/m | 25 (3 Low) | 32 (2 Low) *2 | 23/12/2025 02:00 |
| Scunthorpe Town Timeseries Graph |
n/m | 31 (1 Low) | 3 (1 Low) | 20 (2 Low) | 31 (2 Low) *1 | 22/12/2025 12:30 |
| Sheffield Barnsley Road Timeseries Graph |
n/m | 53 (1 Low) | n/m | 22 (2 Low) | n/m | 23/12/2025 02:00 |
| Sheffield Devonshire Green Timeseries Graph |
15 (1 Low) | 30 (1 Low) | n/m | 22 (2 Low) | 30 (2 Low) *2 | 23/12/2025 02:00 |
| Sheffield Tinsley Timeseries Graph |
18 (1 Low) | 34 (1 Low) | n/m | 20 (2 Low) | 27 (2 Low) *2 | 22/12/2025 24:00 |
| Wakefield Alverthorpe Timeseries Graph |
n/m | n/m | n/m | 24 (3 Low) | 32 (2 Low) *2 | 23/12/2025 02:00 |
| York Bootham Timeseries Graph |
24 (1 Low) | 17 (1 Low) | n/m | 17 (2 Low) | 27 (2 Low) *1 | 23/12/2025 02:00 |
| York Fishergate Timeseries Graph |
n/m | 51 (1 Low) | n/m | 15 (2 Low) | 30 (2 Low) *1 | 23/12/2025 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