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 Sun 18th May 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 |
97 (3 Low) | n/m | n/m | 7 (1 Low) | 13 (1 Low) *2 | 18/05/2025 19:00:00 |
| Bush Estate Timeseries Graph |
111 (4 Moderate) | 8 (1 Low) | n/m | n/m | n/m | 17/05/2025 18:00:00 |
| Dumbarton Roadside Timeseries Graph |
n/m | 13 (1 Low) | n/m | n/m | n/m | 18/05/2025 15:00:00 |
| Edinburgh Nicolson Street Timeseries Graph |
n/m | 25 (1 Low) | n/m | n/m | n/m | 18/05/2025 06:00:00 |
| Edinburgh St Leonards Timeseries Graph |
84 (3 Low) | 19 (1 Low) | n/a | 8 (1 Low) | 17 (2 Low) *2 | 17/05/2025 08:00:00 |
| Glasgow Great Western Road Timeseries Graph |
n/m | 29 (1 Low) | n/m | n/m | n/m | 18/05/2025 02:00:00 |
| Glasgow High Street Timeseries Graph |
n/m | 22 (1 Low) | n/m | 7 (1 Low) | 13 (1 Low) *2 | 18/05/2025 01:00:00 |
| Glasgow Kerbside Timeseries Graph |
n/m | 86 (2 Low) | n/m | n/m | n/m | 17/05/2025 23:00:00 |
| Glasgow Townhead Timeseries Graph |
n/a | 27 (1 Low) | n/m | 8 (1 Low) | 15 (1 Low) *2 | 18/05/2025 01:00:00 |
| Grangemouth Timeseries Graph |
n/m | 21 (1 Low) | 4 (1 Low) | 10 (1 Low) | 16 (1 Low) *1 | 18/05/2025 12:45:00 |
| Grangemouth Moray Timeseries Graph |
n/m | 20 (1 Low) | n/m | n/m | n/m | 18/05/2025 02:00:00 |
| Greenock A8 Roadside Timeseries Graph |
n/m | 33 (1 Low) | n/m | 8 (1 Low) | 15 (1 Low) *2 | 18/05/2025 01:00:00 |
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 |
100 (3 Low) | 5 (1 Low) | n/m | 10 (1 Low) | 18 (2 Low) *2 | 18/05/2025 22:00:00 |
| Chesterfield Roadside Timeseries Graph |
n/m | n/a | n/m | 11 (1 Low) | 18 (2 Low) *2 | 18/05/2025 22:00:00 |
| Derby St Alkmund's Way Timeseries Graph |
n/m | 33 (1 Low) | n/m | 11 (1 Low) | n/m | 18/05/2025 22:00:00 |
| Derby Stockbrook Park Timeseries Graph |
91 (3 Low) | n/m | n/m | 10 (1 Low) | 17 (2 Low) *2 | 18/05/2025 22:00:00 |
| Ladybower Timeseries Graph |
108 (4 Moderate) | 2 (1 Low) | 5 (1 Low) | 10 (1 Low) | 16 (1 Low) *2 | 17/05/2025 22:15:00 |
| Leicester A594 Roadside Timeseries Graph |
n/m | 23 (1 Low) | n/m | 13 (2 Low) | 21 (2 Low) *2 | 18/05/2025 21:00:00 |
| Leicester University Timeseries Graph |
92 (3 Low) | 24 (1 Low) | n/m | 13 (2 Low) | 20 (2 Low) *2 | 18/05/2025 21:00:00 |
| Lincoln Canwick Road Timeseries Graph |
n/m | 40 (1 Low) | n/m | n/m | n/m | 18/05/2025 12:00:00 |
| Mansfield Ladybrook Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 17 (2 Low) *2 | 18/05/2025 21:00:00 |
| Northampton Spring Park Timeseries Graph |
89 (3 Low) | 7 (1 Low) | n/m | 14 (2 Low) | n/m | 18/05/2025 20:00:00 |
| Nottingham Bilborough Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 18 (2 Low) *2 | 18/05/2025 22:00:00 |
| Nottingham Kenmore Gardens Timeseries Graph |
93 (3 Low) | 9 (1 Low) | 2 (1 Low) | 13 (2 Low) | 23 (2 Low) *2 | 17/05/2025 22:15:00 |
| Nottingham Western Boulevard Timeseries Graph |
n/m | 22 (1 Low) | n/m | 12 (2 Low) | 21 (2 Low) *2 | 18/05/2025 22:00:00 |
| Tallington Timeseries Graph |
91 (3 Low) | n/m | n/m | 12 (2 Low) | 19 (2 Low) *2 | 18/05/2025 18:00:00 |
| Toft Newton Timeseries Graph |
95 (3 Low) | 5 (1 Low) | n/m | 12 (2 Low) | 19 (2 Low) *2 | 18/05/2025 17:00:00 |
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 | 18 (1 Low) | n/m | 12 (2 Low) | 18 (2 Low) *2 | 18/05/2025 22:00:00 |
| Cambridge Roadside Timeseries Graph |
n/m | 13 (1 Low) | n/m | n/m | n/m | 18/05/2025 12:00:00 |
| Luton A505 Roadside Timeseries Graph |
n/m | 57 (1 Low) | n/m | 15 (2 Low) | n/m | 18/05/2025 21:00:00 |
| Norwich Lakenfields Timeseries Graph |
89 (3 Low) | 3 (1 Low) | n/m | 10 (1 Low) | 16 (1 Low) *2 | 18/05/2025 16:00:00 |
| Peterborough Garton End Timeseries Graph |
n/m | n/m | n/m | 13 (2 Low) | 21 (2 Low) *2 | 18/05/2025 16:00:00 |
| Sibton Timeseries Graph |
88 (3 Low) | n/m | n/m | 9 (1 Low) | 15 (1 Low) *2 | 18/05/2025 19:00:00 |
| Southend Shoeburyness Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 15 (1 Low) *2 | 18/05/2025 20:00:00 |
| Southend-on-Sea Timeseries Graph |
92 (3 Low) | 9 (1 Low) | n/m | 10 (1 Low) | 17 (2 Low) *2 | 18/05/2025 22:00:00 |
| St Osyth Timeseries Graph |
105 (4 Moderate) | 6 (1 Low) | n/m | 10 (1 Low) | 22 (2 Low) *2 | 18/05/2025 20:00:00 |
| Stanford-le-Hope Roadside Timeseries Graph |
n/m | 19 (1 Low) | n/m | 11 (1 Low) | 20 (2 Low) *1 | 18/05/2025 22:00:00 |
| Thurrock Timeseries Graph |
n/a | 36 (1 Low) | 2 (1 Low) | 11 (1 Low) | 18 (2 Low) *2 | 18/05/2025 18:15:00 |
| Weybourne Timeseries Graph |
98 (3 Low) | n/m | n/m | 12 (2 Low) | 22 (2 Low) *2 | 18/05/2025 16:00:00 |
| Wicken Fen Timeseries Graph |
78 (3 Low) | 2 (1 Low) | n/a | 13 (2 Low) | 22 (2 Low) *2 | 30/04/2025 02:00:00 |
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 | 53 (1 Low) | n/m | 14 (2 Low) | 30 (2 Low) *1 | 18/05/2025 21:00:00 |
| Ealing Horn Lane Timeseries Graph |
n/m | n/m | n/m | n/m | 27 (2 Low) *1 | 18/05/2025 07:00:00 |
| Haringey Roadside Timeseries Graph |
n/m | 26 (1 Low) | n/m | n/m | n/m | 17/05/2025 23:00:00 |
| London Bexley Timeseries Graph |
n/m | 23 (1 Low) | n/m | 12 (2 Low) | 20 (2 Low) *2 | 18/05/2025 21:00:00 |
| London Bloomsbury Timeseries Graph |
80 (3 Low) | 30 (1 Low) | 2 (1 Low) | 11 (1 Low) | 18 (2 Low) *2 | 18/05/2025 08:00:00 |
| London Haringey Priory Park South Timeseries Graph |
88 (3 Low) | 24 (1 Low) | n/m | 10 (1 Low) | 17 (2 Low) *2 | 18/05/2025 22:00:00 |
| London Harlington Timeseries Graph |
n/a | 52 (1 Low) | n/m | 12 (2 Low) | 18 (2 Low) *2 | 18/05/2025 22:00:00 |
| London Hillingdon Timeseries Graph |
78 (3 Low) | 26 (1 Low) | n/m | 12 (2 Low) | 18 (2 Low) *2 | 18/05/2025 22:00:00 |
| London Honor Oak Park Timeseries Graph |
91 (3 Low) | n/m | n/m | 11 (1 Low) | 17 (2 Low) *2 | 18/05/2025 22:00:00 |
| London Marylebone Road Timeseries Graph |
n/a | n/a | 1 (1 Low) | n/a | n/a | 18/05/2025 15:30:00 |
| London N. Kensington Timeseries Graph |
89 (3 Low) | 26 (1 Low) | 3 (1 Low) | 11 (1 Low) | 18 (2 Low) *2 | 17/05/2025 22:15:00 |
| London Norbury Manor School Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 16 (1 Low) *2 | 18/05/2025 22:00:00 |
| London Teddington Bushy Park Timeseries Graph |
n/m | n/m | n/m | 12 (2 Low) | 20 (2 Low) *2 | 18/05/2025 22:00:00 |
| London Westminster Timeseries Graph |
68 (3 Low) | 20 (1 Low) | n/m | 9 (1 Low) | n/m | 18/05/2025 22:00:00 |
| Southwark A2 Old Kent Road Timeseries Graph |
n/m | 49 (1 Low) | n/m | n/m | 24 (2 Low) *1 | 17/05/2025 23:00:00 |
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 |
100 (3 Low) | 4 (1 Low) | n/m | n/m | n/m | 17/05/2025 23:00:00 |
| Inverness Timeseries Graph |
n/m | 17 (1 Low) | n/m | 6 (1 Low) | 12 (1 Low) *2 | 18/05/2025 22:00:00 |
| Lerwick Timeseries Graph |
97 (3 Low) | n/m | n/m | n/m | n/m | 18/05/2025 22:00:00 |
| Strathvaich Timeseries Graph |
102 (4 Moderate) | n/m | n/m | n/m | n/m | 17/05/2025 23:00:00 |
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 |
| Hartlepool St Abbs Walk Timeseries Graph |
94 (3 Low) | 2 (1 Low) | n/m | 14 (2 Low) | 29 (2 Low) *2 | 18/05/2025 11:00:00 |
| Kielder Water Timeseries Graph |
91 (3 Low) | n/m | n/m | 6 (1 Low) | 11 (1 Low) *2 | 18/05/2025 20:00:00 |
| Middlesbrough Timeseries Graph |
90 (3 Low) | 8 (1 Low) | 1 (1 Low) | 8 (1 Low) | 26 (2 Low) *1 | 18/05/2025 16:15:00 |
| Newcastle Centre Timeseries Graph |
88 (3 Low) | 12 (1 Low) | n/m | 10 (1 Low) | 25 (2 Low) *1 | 18/05/2025 10:00:00 |
| Newcastle Cradlewell Roadside Timeseries Graph |
n/m | 11 (1 Low) | n/m | 10 (1 Low) | 19 (2 Low) *2 | 18/05/2025 10:00:00 |
| Stockton-on-Tees A1305 Roadside Timeseries Graph |
n/m | 27 (1 Low) | n/m | n/a | n/m | 16/05/2025 15:00:00 |
| Stockton-on-Tees Eaglescliffe Timeseries Graph |
n/m | 14 (1 Low) | n/m | 12 (2 Low) | 28 (2 Low) *1 | 18/05/2025 16:00:00 |
| Sunderland Silksworth Timeseries Graph |
92 (3 Low) | 3 (1 Low) | n/m | 12 (2 Low) | 23 (2 Low) *2 | 18/05/2025 10:00:00 |
| Sunderland Wessington Way Timeseries Graph |
n/m | 4 (1 Low) | n/m | 12 (2 Low) | n/m | 18/05/2025 10:00:00 |
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 |
99 (3 Low) | 3 (1 Low) | n/m | 6 (1 Low) | 13 (1 Low) *2 | 18/05/2025 05:00:00 |
| Aberdeen Wellington Road Timeseries Graph |
n/m | 22 (1 Low) | n/m | n/m | n/m | 17/05/2025 24:00: |
| Dundee Mains Loan Timeseries Graph |
n/m | 5 (1 Low) | n/m | n/m | n/m | 18/05/2025 09:00:00 |
| Perth Glasgow Road Timeseries Graph |
n/m | 14 (1 Low) | n/m | n/m | n/m | 18/05/2025 06:00:00 |
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 |
100 (3 Low) | 6 (1 Low) | n/m | n/m | n/m | 17/05/2025 23:00:00 |
| Wrexham Timeseries Graph |
n/m | 13 (1 Low) | 4 (1 Low) | 10 (1 Low) | 17 (2 Low) *2 | 18/05/2025 09:15:00 |
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 | 15 (1 Low) | n/m | 10 (1 Low) | n/m | 18/05/2025 20:00:00 |
| Blackburn Accrington Road Timeseries Graph |
n/m | 32 (1 Low) | n/m | n/m | n/m | 17/05/2025 24:00: |
| Blackburn Audley Park Timeseries Graph |
96 (3 Low) | n/m | n/m | 8 (1 Low) | 14 (1 Low) *2 | 18/05/2025 22:00:00 |
| Blackpool Marton Timeseries Graph |
89 (3 Low) | 11 (1 Low) | n/m | 10 (1 Low) | 15 (1 Low) *2 | 18/05/2025 01:00:00 |
| Blackpool Whitegate Drive Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | n/m | 18/05/2025 01:00:00 |
| Bury Whitefield Roadside Timeseries Graph |
n/m | 24 (1 Low) | n/m | n/m | 18 (2 Low) *1 | 17/05/2025 23:00:00 |
| Carlisle Morton A595 Timeseries Graph |
n/m | 9 (1 Low) | n/m | 6 (1 Low) | 12 (1 Low) *1 | 18/05/2025 21:00:00 |
| Crewe Coppenhall Timeseries Graph |
103 (4 Moderate) | 15 (1 Low) | n/m | 11 (1 Low) | 17 (2 Low) *2 | 18/05/2025 22:00:00 |
| Glazebury Timeseries Graph |
97 (3 Low) | 17 (1 Low) | n/m | 8 (1 Low) | 14 (1 Low) *2 | 18/05/2025 22:00:00 |
| Liverpool Speke Timeseries Graph |
98 (3 Low) | 37 (1 Low) | 1 (1 Low) | 12 (2 Low) | 23 (2 Low) *1 | 18/05/2025 09:45:00 |
| Liverpool Thirlmere Park Timeseries Graph |
94 (3 Low) | n/m | n/m | 10 (1 Low) | 17 (2 Low) *2 | 18/05/2025 20:00:00 |
| Manchester Piccadilly Timeseries Graph |
89 (3 Low) | 29 (1 Low) | 2 (1 Low) | 10 (1 Low) | 18 (2 Low) *2 | 18/05/2025 11:15:00 |
| Manchester Sharston Timeseries Graph |
94 (3 Low) | 61 (1 Low) | n/m | 10 (1 Low) | 16 (1 Low) *2 | 18/05/2025 20:00:00 |
| Middlewich St Michael's Way Timeseries Graph |
n/m | n/m | n/m | 9 (1 Low) | n/m | 18/05/2025 22:00:00 |
| Preston Timeseries Graph |
90 (3 Low) | 23 (1 Low) | n/m | 9 (1 Low) | 16 (1 Low) *2 | 18/05/2025 01:00:00 |
| Salford Eccles Timeseries Graph |
99 (3 Low) | 32 (1 Low) | n/m | 11 (1 Low) | 19 (2 Low) *2 | 18/05/2025 22:00:00 |
| Shaw Crompton Way Timeseries Graph |
n/m | 20 (1 Low) | n/m | n/m | n/m | 17/05/2025 23:00:00 |
| St Helens Linkway Timeseries Graph |
n/m | 27 (1 Low) | n/m | n/m | 17 (2 Low) *1 | 18/05/2025 02:00:00 |
| Tameside A635 Manchester Road Timeseries Graph |
n/m | n/m | n/m | 8 (1 Low) | n/m | 18/05/2025 15:00:00 |
| Warrington Timeseries Graph |
n/m | 18 (1 Low) | n/m | 9 (1 Low) | 18 (2 Low) *1 | 18/05/2025 22:00:00 |
| Widnes Milton Road Timeseries Graph |
n/m | 29 (1 Low) | n/m | n/m | n/m | 18/05/2025 03:00:00 |
| Wigan Centre Timeseries Graph |
89 (3 Low) | 23 (1 Low) | n/m | 10 (1 Low) | 17 (2 Low) *2 | 18/05/2025 19:00:00 |
| Wirral Tranmere Timeseries Graph |
89 (3 Low) | 9 (1 Low) | n/m | 9 (1 Low) | 14 (1 Low) *2 | 18/05/2025 21:00:00 |
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 | 32 (1 Low) | n/m | n/m | 14 (1 Low) *1 | 18/05/2025 03:00:00 |
| Ballymena Antrim Road Timeseries Graph |
n/m | 32 (1 Low) | n/m | n/m | n/m | 17/05/2025 24:00: |
| Ballymena Ballykeel Timeseries Graph |
n/m | n/a | n/a | n/m | n/m | 26/02/2025 10:15:00 |
| Belfast Centre Timeseries Graph |
73 (3 Low) | 57 (1 Low) | 4 (1 Low) | 8 (1 Low) | 16 (1 Low) *2 | 18/05/2025 16:00:00 |
| Belfast Stockman's Lane Timeseries Graph |
n/m | 70 (2 Low) | n/m | n/m | 27 (2 Low) *1 | 17/05/2025 24:00: |
| Derry Rosemount Timeseries Graph |
106 (4 Moderate) | 17 (1 Low) | 2 (1 Low) | 2 (1 Low) | 9 (1 Low) *1 | 18/05/2025 07:30:00 |
| Lough Navar Timeseries Graph |
96 (3 Low) | n/m | n/m | 4 (1 Low) | 6 (1 Low) *2 | 18/05/2025 12:00:00 |
Scottish Borders
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Dumfries Timeseries Graph |
n/m | 26 (1 Low) | n/m | n/m | n/m | 17/05/2025 23:00:00 |
| Eskdalemuir Timeseries Graph |
103 (4 Moderate) | 2 (1 Low) | n/m | n/m | n/m | 17/05/2025 23:00:00 |
| Peebles Timeseries Graph |
102 (4 Moderate) | 4 (1 Low) | n/m | n/m | n/m | 17/05/2025 23:00:00 |
South East
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Brighton Preston Park Timeseries Graph |
83 (3 Low) | 31 (1 Low) | n/m | 11 (1 Low) | 17 (2 Low) *2 | 18/05/2025 22:00:00 |
| Chatham Roadside Timeseries Graph |
n/m | 21 (1 Low) | n/m | 8 (1 Low) | 24 (2 Low) *1 | 18/05/2025 22:00:00 |
| Chilbolton Observatory Timeseries Graph |
98 (3 Low) | 11 (1 Low) | 1 (1 Low) | 10 (1 Low) | 14 (1 Low) *2 | 18/05/2025 20:30:00 |
| Eastbourne Timeseries Graph |
84 (3 Low) | 8 (1 Low) | n/m | 8 (1 Low) | 13 (1 Low) *2 | 18/05/2025 21:00:00 |
| Farnborough Cherrywood Timeseries Graph |
n/m | n/m | n/m | 13 (2 Low) | 18 (2 Low) *2 | 18/05/2025 22:00:00 |
| Horley Timeseries Graph |
n/m | 31 (1 Low) | n/m | 10 (1 Low) | 16 (1 Low) *2 | 18/05/2025 22:00:00 |
| Lullington Heath Timeseries Graph |
92 (3 Low) | 5 (1 Low) | 1 (1 Low) | 10 (1 Low) | 15 (1 Low) *2 | 18/05/2025 20:45:00 |
| Maidstone Upper Stone Street Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 17 (2 Low) *2 | 18/05/2025 22:00:00 |
| Milton Keynes Civic Centre Timeseries Graph |
92 (3 Low) | n/m | n/m | 14 (2 Low) | 21 (2 Low) *2 | 18/05/2025 21:00:00 |
| Oxford Centre Roadside Timeseries Graph |
n/m | 50 (1 Low) | n/m | n/m | n/m | 17/05/2025 23:00:00 |
| Oxford St Ebbes Timeseries Graph |
92 (3 Low) | 44 (1 Low) | n/m | 11 (1 Low) | 15 (1 Low) *2 | 18/05/2025 22:00:00 |
| Portsmouth Timeseries Graph |
92 (3 Low) | 26 (1 Low) | n/m | 13 (2 Low) | 18 (2 Low) *2 | 18/05/2025 22:00:00 |
| Portsmouth Anglesea Road Timeseries Graph |
n/m | 26 (1 Low) | n/m | 14 (2 Low) | 19 (2 Low) *2 | 18/05/2025 22:00:00 |
| Reading London Road Timeseries Graph |
n/m | 37 (1 Low) | n/m | n/m | 21 (2 Low) *1 | 18/05/2025 02:00:00 |
| Reading New Town Timeseries Graph |
89 (3 Low) | 33 (1 Low) | n/m | 12 (2 Low) | 17 (2 Low) *2 | 18/05/2025 22:00:00 |
| Reading Rose Kiln Lane Timeseries Graph |
n/m | n/m | n/m | 12 (2 Low) | n/m | 18/05/2025 22:00:00 |
| Rochester Stoke Timeseries Graph |
97 (3 Low) | 6 (1 Low) | 2 (1 Low) | 11 (1 Low) | 17 (2 Low) *2 | 18/05/2025 13:15:00 |
| Slough Windmill Bath Road Timeseries Graph |
n/m | n/m | n/m | 14 (2 Low) | 25 (2 Low) *2 | 18/05/2025 22:00:00 |
| Southampton A33 Timeseries Graph |
n/m | 56 (1 Low) | n/m | 12 (2 Low) | 17 (2 Low) *2 | 18/05/2025 22:00:00 |
| Southampton Centre Timeseries Graph |
83 (3 Low) | 43 (1 Low) | 9 (1 Low) | 13 (2 Low) | 18 (2 Low) *2 | 18/05/2025 16:45:00 |
| Storrington Roadside Timeseries Graph |
n/m | 15 (1 Low) | n/m | 11 (1 Low) | 16 (1 Low) *2 | 18/05/2025 22:00:00 |
| Worthing A27 Roadside Timeseries Graph |
n/m | 28 (1 Low) | n/m | 13 (2 Low) | n/m | 18/05/2025 22:00:00 |
| Worthing East Ten Acres Timeseries Graph |
n/m | n/m | n/m | 12 (2 Low) | 18 (2 Low) *2 | 18/05/2025 22:00:00 |
South Wales
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Cardiff Centre Timeseries Graph |
98 (3 Low) | 31 (1 Low) | 6 (1 Low) | 11 (1 Low) | 21 (2 Low) *1 | 18/05/2025 12:00:00 |
| Cardiff Newport Road Timeseries Graph |
n/m | 41 (1 Low) | n/m | n/m | 25 (2 Low) *1 | 17/05/2025 23:00:00 |
| Chepstow A48 Timeseries Graph |
n/m | 26 (1 Low) | n/m | 11 (1 Low) | 19 (2 Low) *1 | 18/05/2025 22:00:00 |
| Cwmbran Crownbridge Timeseries Graph |
103 (4 Moderate) | 17 (1 Low) | n/m | n/m | n/m | 18/05/2025 21:00:00 |
| Hafod-yr-ynys Hill Roadside Timeseries Graph |
n/m | n/a | n/m | n/m | n/m | 15/05/2025 07:00:00 |
| Narberth Timeseries Graph |
96 (3 Low) | 5 (1 Low) | 1 (1 Low) | 7 (1 Low) | 12 (1 Low) *2 | 18/05/2025 10:45:00 |
| Newport Timeseries Graph |
n/m | 21 (1 Low) | n/m | 12 (2 Low) | 18 (2 Low) *2 | 18/05/2025 06:00:00 |
| Port Talbot Margam Timeseries Graph |
110 (4 Moderate) | 16 (1 Low) | 2 (1 Low) | 9 (1 Low) | 21 (2 Low) *3 | 18/05/2025 09:15:00 |
| Swansea Roadside Timeseries Graph |
n/m | 32 (1 Low) | n/m | 13 (2 Low) | 24 (2 Low) *1 | 18/05/2025 10:00:00 |
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 | 11 (1 Low) | 17 (2 Low) *2 | 18/05/2025 06:00:00 |
| Bath A4 Roadside Timeseries Graph |
n/m | 30 (1 Low) | n/m | n/m | n/m | 17/05/2025 23:00:00 |
| Bournemouth Timeseries Graph |
97 (3 Low) | 16 (1 Low) | n/m | n/a | n/m | 02/04/2025 09:00:00 |
| Bristol St Paul's Timeseries Graph |
98 (3 Low) | 52 (1 Low) | n/m | 11 (1 Low) | 21 (2 Low) *1 | 18/05/2025 12:00:00 |
| Bristol Temple Way Timeseries Graph |
n/m | 57 (1 Low) | n/m | 13 (2 Low) | 21 (2 Low) *2 | 18/05/2025 12:00:00 |
| Charlton Mackrell Timeseries Graph |
101 (4 Moderate) | 6 (1 Low) | n/m | 9 (1 Low) | 16 (1 Low) *2 | 18/05/2025 12:00:00 |
| Cheltenham A40 Gloucester Road Timeseries Graph |
n/m | n/m | n/m | 12 (2 Low) | n/m | 18/05/2025 21:00:00 |
| Christchurch Barrack Road Timeseries Graph |
n/m | 24 (1 Low) | n/m | 13 (2 Low) | n/m | 18/05/2025 22:00:00 |
| Exeter Roadside Timeseries Graph |
91 (3 Low) | 34 (1 Low) | n/m | n/m | n/m | 18/05/2025 20:00:00 |
| Gloucester Tredworth Timeseries Graph |
n/m | n/m | n/m | 21 (2 Low) | 27 (2 Low) *2 | 18/05/2025 20:00:00 |
| Honiton Timeseries Graph |
98 (3 Low) | 8 (1 Low) | n/m | 11 (1 Low) | 16 (1 Low) *2 | 18/05/2025 02:00:00 |
| Plymouth Centre Timeseries Graph |
104 (4 Moderate) | 38 (1 Low) | n/m | 12 (2 Low) | 19 (2 Low) *2 | 18/05/2025 05:00:00 |
| Plymouth Tavistock Road Timeseries Graph |
n/m | 42 (1 Low) | n/m | n/m | n/m | 17/05/2025 23:00:00 |
| Saltash Callington Road Timeseries Graph |
n/m | n/m | n/m | 7 (1 Low) | 20 (2 Low) *1 | 18/05/2025 01:00:00 |
| Swindon Walcot Timeseries Graph |
91 (3 Low) | 25 (1 Low) | n/m | 12 (2 Low) | 16 (1 Low) *2 | 18/05/2025 21:00:00 |
| Yarner Wood Timeseries Graph |
109 (4 Moderate) | 9 (1 Low) | n/m | 10 (1 Low) | 15 (1 Low) *2 | 18/05/2025 04:00:00 |
West Ireland
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Mace Head Timeseries Graph |
106 (4 Moderate) | n/m | n/m | n/m | n/m | 18/05/2025 18:00:00 |
West Midlands
| 24 Hour Summary, based on data provided by Environment Agency | ||||||
|---|---|---|---|---|---|---|
| Monitoring site | Running 8 Hour mean Ozone (µgm-3) |
Hourly mean Nitrogen dioxide (µgm-3) |
Max 15 min mean Sulphur dioxide (µgm-3) |
Running 24 Hour mean PM2.5 Particles (µgm-3) |
Running 24 Hour mean PM10 Particles (µgm-3) |
Last updated |
| Birmingham A4540 Roadside Timeseries Graph |
93 (3 Low) | 100 (2 Low) | n/m | 11 (1 Low) | 19 (2 Low) *2 | 18/05/2025 22:00:00 |
| Birmingham Hall Green Timeseries Graph |
102 (4 Moderate) | 63 (1 Low) | n/m | 12 (2 Low) | 20 (2 Low) *2 | 18/05/2025 21:00:00 |
| Birmingham Ladywood Timeseries Graph |
91 (3 Low) | 73 (2 Low) | 2 (1 Low) | 12 (2 Low) | 20 (2 Low) *2 | 17/05/2025 22:30:00 |
| Burton-on-Trent Horninglow Timeseries Graph |
97 (3 Low) | 20 (1 Low) | n/m | 10 (1 Low) | 16 (1 Low) *2 | 18/05/2025 22:00:00 |
| Cannock A5190 Roadside Timeseries Graph |
n/m | 24 (1 Low) | n/m | 10 (1 Low) | n/m | 18/05/2025 22:00:00 |
| Coventry Allesley Timeseries Graph |
88 (3 Low) | 34 (1 Low) | n/m | 12 (2 Low) | 19 (2 Low) *2 | 18/05/2025 22:00:00 |
| Coventry Binley Road Timeseries Graph |
n/m | 62 (1 Low) | n/m | 13 (2 Low) | 20 (2 Low) *2 | 18/05/2025 22:00:00 |
| Leamington Spa Timeseries Graph |
99 (3 Low) | 67 (1 Low) | n/m | 13 (2 Low) | 20 (2 Low) *2 | 18/05/2025 21:00:00 |
| Leamington Spa Rugby Road Timeseries Graph |
n/m | 41 (1 Low) | n/m | 12 (2 Low) | 18 (2 Low) *2 | 18/05/2025 22:00:00 |
| Leominster Timeseries Graph |
104 (4 Moderate) | 21 (1 Low) | n/m | n/m | n/m | 18/05/2025 21:00:00 |
| Oldbury Birmingham Road Timeseries Graph |
n/m | 91 (2 Low) | n/m | n/m | n/m | 17/05/2025 23:00:00 |
| Shrewsbury Underdale Timeseries Graph |
n/m | n/m | n/m | 11 (1 Low) | 17 (2 Low) *2 | 18/05/2025 22:00:00 |
| Stoke-on-Trent A50 Roadside Timeseries Graph |
n/m | 45 (1 Low) | n/m | 10 (1 Low) | 18 (2 Low) *2 | 18/05/2025 22:00:00 |
| Stoke-on-Trent Centre Timeseries Graph |
94 (3 Low) | 31 (1 Low) | n/m | 10 (1 Low) | 17 (2 Low) *2 | 18/05/2025 22:00:00 |
| Telford Hollinswood Timeseries Graph |
104 (4 Moderate) | 52 (1 Low) | n/m | 11 (1 Low) | 17 (2 Low) *2 | 18/05/2025 22:00:00 |
| Walsall Woodlands Timeseries Graph |
100 (3 Low) | 50 (1 Low) | n/m | n/m | n/m | 18/05/2025 19:00:00 |
| West Bromwich Kenrick Park Timeseries Graph |
94 (3 Low) | 77 (2 Low) | n/m | n/m | n/m | 18/05/2025 19:00:00 |
| Worcester Tolladine Timeseries Graph |
n/m | n/m | n/m | 13 (2 Low) | 19 (2 Low) *2 | 18/05/2025 21:00:00 |
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 |
97 (3 Low) | 11 (1 Low) | 1 (1 Low) | 10 (1 Low) | 21 (2 Low) *2 | 17/05/2025 13:30:00 |
| Bradford Mayo Avenue Timeseries Graph |
n/m | 64 (1 Low) | n/m | n/m | n/m | 18/05/2025 18:00:00 |
| Bradford Shipley Airedale Road Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 19 (2 Low) *2 | 18/05/2025 21:00:00 |
| Dewsbury Ashworth Grange Timeseries Graph |
94 (3 Low) | 12 (1 Low) | n/m | 11 (1 Low) | 19 (2 Low) *2 | 18/05/2025 21:00:00 |
| Doncaster A630 Cleveland Street Timeseries Graph |
n/m | 33 (1 Low) | n/m | 11 (1 Low) | n/m | 18/05/2025 22:00:00 |
| Harrogate Woodlands Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 17 (2 Low) *2 | 18/05/2025 13:00:00 |
| High Muffles Timeseries Graph |
89 (3 Low) | 1 (1 Low) | n/m | 10 (1 Low) | 17 (2 Low) *2 | 18/05/2025 12:00:00 |
| Hull Freetown Timeseries Graph |
86 (3 Low) | 4 (1 Low) | 3 (1 Low) | 13 (2 Low) | 23 (2 Low) *2 | 18/05/2025 02:30:00 |
| Hull Holderness Road Timeseries Graph |
n/m | 7 (1 Low) | n/m | 13 (2 Low) | 23 (2 Low) *2 | 18/05/2025 13:00:00 |
| Immingham Woodlands Avenue Timeseries Graph |
92 (3 Low) | 10 (1 Low) | n/m | 12 (2 Low) | 22 (2 Low) *2 | 18/05/2025 14:00:00 |
| Leeds Centre Timeseries Graph |
97 (3 Low) | 8 (1 Low) | 3 (1 Low) | 11 (1 Low) | 18 (2 Low) *2 | 18/05/2025 14:00:00 |
| Leeds Headingley Kerbside Timeseries Graph |
n/m | 24 (1 Low) | n/m | 12 (2 Low) | 23 (2 Low) *1 | 18/05/2025 17:00:00 |
| Rotherham East Dene Timeseries Graph |
n/m | n/m | n/m | 10 (1 Low) | 17 (2 Low) *2 | 18/05/2025 22:00:00 |
| Scunthorpe Town Timeseries Graph |
n/m | 11 (1 Low) | 1 (1 Low) | 11 (1 Low) | 26 (2 Low) *1 | 18/05/2025 02:30:00 |
| Sheffield Barnsley Road Timeseries Graph |
n/m | 39 (1 Low) | n/m | 10 (1 Low) | n/m | 18/05/2025 17:00:00 |
| Sheffield Devonshire Green Timeseries Graph |
96 (3 Low) | 23 (1 Low) | n/m | 12 (2 Low) | 21 (2 Low) *2 | 18/05/2025 16:00:00 |
| Sheffield Tinsley Timeseries Graph |
93 (3 Low) | 8 (1 Low) | n/m | 10 (1 Low) | 18 (2 Low) *2 | 18/05/2025 22:00:00 |
| York Bootham Timeseries Graph |
82 (3 Low) | 8 (1 Low) | n/m | 12 (2 Low) | 24 (2 Low) *1 | 18/05/2025 21:00:00 |
| York Fishergate Timeseries Graph |
n/m | 25 (1 Low) | n/m | 9 (1 Low) | 29 (2 Low) *1 | 18/05/2025 14:00:00 |
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