Latest measured levels based on data provided by the 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
  • Pollutant levels recorded for the hour up to 7am Tue 18th Mar 2025

Filter by region:

Central Scotland

Latest measured levels based on data provided by the 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
64 (2 Low)n/mn/m4 (1 Low)9 (1 Low)
*2
18/03/2025
07:00
Bush Estate
Timeseries Graph
n/an/an/mn/mn/m 17/03/2025
21:00
Dumbarton Roadside
Timeseries Graph
n/m30 (1 Low)n/mn/mn/m 18/03/2025
07:00
Edinburgh Nicolson Street
Timeseries Graph
n/m19 (1 Low)n/mn/mn/m 18/03/2025
07:00
Edinburgh St Leonards
Timeseries Graph
56 (2 Low)7 (1 Low)n/a5 (1 Low)14 (1 Low)
*2
18/03/2025
07:00
Glasgow Great Western Road
Timeseries Graph
n/m21 (1 Low)n/mn/mn/m 18/03/2025
07:00
Glasgow High Street
Timeseries Graph
n/m23 (1 Low)n/m5 (1 Low)12 (1 Low)
*2
18/03/2025
07:00
Glasgow Kerbside
Timeseries Graph
n/m48 (1 Low)n/mn/mn/m 18/03/2025
07:00
Glasgow Townhead
Timeseries Graph
50 (2 Low)23 (1 Low)n/m6 (1 Low)13 (1 Low)
*2
18/03/2025
07:00
Grangemouth
Timeseries Graph
n/m40 (1 Low)2 (1 Low)7 (1 Low)10 (1 Low)
*1
18/03/2025
07:00
Grangemouth Moray
Timeseries Graph
n/m18 (1 Low)n/mn/mn/m 18/03/2025
06:00
Greenock A8 Roadside
Timeseries Graph
n/m35 (1 Low)n/m6 (1 Low)21 (2 Low)
*2
18/03/2025
07:00

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East Midlands

Latest measured levels based on data provided by the 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
21 (1 Low)8 (1 Low)n/m8 (1 Low)16 (1 Low)
*2
18/03/2025
07:00
Chesterfield Roadside
Timeseries Graph
n/m24 (1 Low)n/m9 (1 Low)20 (2 Low)
*2
18/03/2025
07:00
Derby St Alkmund's Way
Timeseries Graph
n/m57 (1 Low)n/m8 (1 Low)n/m 18/03/2025
07:00
Derby Stockbrook Park
Timeseries Graph
36 (2 Low)n/mn/m8 (1 Low)14 (1 Low)
*2
18/03/2025
07:00
Ladybower
Timeseries Graph
72 (3 Low)7 (1 Low)n/a7 (1 Low)13 (1 Low)
*2
18/03/2025
07:00
Leicester A594 Roadside
Timeseries Graph
n/m47 (1 Low)n/m9 (1 Low)17 (2 Low)
*2
18/03/2025
07:00
Leicester University
Timeseries Graph
60 (2 Low)8 (1 Low)n/m8 (1 Low)14 (1 Low)
*2
18/03/2025
07:00
Lincoln Canwick Road
Timeseries Graph
n/m32 (1 Low)n/mn/mn/m 18/03/2025
07:00
Mansfield Ladybrook
Timeseries Graph
n/mn/mn/m8 (1 Low)15 (1 Low)
*2
18/03/2025
07:00
Northampton Spring Park
Timeseries Graph
48 (2 Low)16 (1 Low)n/m11 (1 Low)n/m 18/03/2025
07:00
Nottingham Bilborough
Timeseries Graph
n/mn/mn/m8 (1 Low)15 (1 Low)
*2
18/03/2025
07:00
Nottingham Kenmore Gardens
Timeseries Graph
51 (2 Low)9 (1 Low)n/a8 (1 Low)16 (1 Low)
*2
18/03/2025
07:00
Nottingham Western Boulevard
Timeseries Graph
n/m35 (1 Low)n/m7 (1 Low)12 (1 Low)
*2
18/03/2025
07:00
Tallington
Timeseries Graph
46 (2 Low)n/mn/m7 (1 Low)13 (1 Low)
*2
18/03/2025
07:00
Toft Newton
Timeseries Graph
47 (2 Low)5 (1 Low)n/m6 (1 Low)12 (1 Low)
*2
18/03/2025
07:00

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Eastern

Latest measured levels based on data provided by the 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/m24 (1 Low)n/m9 (1 Low)15 (1 Low)
*2
18/03/2025
07:00
Cambridge Roadside
Timeseries Graph
n/m30 (1 Low)n/mn/mn/m 18/03/2025
07:00
Luton A505 Roadside
Timeseries Graph
n/m46 (1 Low)n/m10 (1 Low)n/m 18/03/2025
07:00
Norwich Lakenfields
Timeseries Graph
n/an/an/mn/an/a 17/03/2025
19:00
Peterborough Garton End
Timeseries Graph
n/mn/mn/m8 (1 Low)16 (1 Low)
*2
18/03/2025
07:00
Sibton
Timeseries Graph
n/an/mn/m7 (1 Low)14 (1 Low)
*2
18/03/2025
07:00
Southend-on-Sea
Timeseries Graph
60 (2 Low)19 (1 Low)n/m8 (1 Low)16 (1 Low)
*2
18/03/2025
07:00
St Osyth
Timeseries Graph
67 (3 Low)8 (1 Low)n/m8 (1 Low)15 (1 Low)
*2
18/03/2025
07:00
Stanford-le-Hope Roadside
Timeseries Graph
n/m50 (1 Low)n/m12 (2 Low)30 (2 Low)
*1
18/03/2025
07:00
Thurrock
Timeseries Graph
41 (2 Low)44 (1 Low)1 (1 Low)10 (1 Low)20 (2 Low)
*2
18/03/2025
07:00
Weybourne
Timeseries Graph
59 (2 Low)n/mn/m9 (1 Low)18 (2 Low)
*2
18/03/2025
07:00
Wicken Fen
Timeseries Graph
32 (1 Low)8 (1 Low)2 (1 Low)9 (1 Low)17 (2 Low)
*2
18/03/2025
07:00

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Greater London

Latest measured levels based on data provided by the 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/m50 (1 Low)n/m12 (2 Low)28 (2 Low)
*1
18/03/2025
07:00
Ealing Horn Lane
Timeseries Graph
n/mn/mn/mn/m27 (2 Low)
*1
18/03/2025
07:00
Haringey Roadside
Timeseries Graph
n/m30 (1 Low)n/mn/mn/m 18/03/2025
07:00
London Bexley
Timeseries Graph
n/m63 (1 Low)n/m11 (1 Low)20 (2 Low)
*2
18/03/2025
07:00
London Bloomsbury
Timeseries Graph
30 (1 Low)40 (1 Low)2 (1 Low)10 (1 Low)18 (2 Low)
*2
18/03/2025
07:00
London Haringey Priory Park South
Timeseries Graph
34 (2 Low)25 (1 Low)n/mn/mn/m 18/03/2025
07:00
London Harlington
Timeseries Graph
32 (1 Low)45 (1 Low)n/m11 (1 Low)24 (2 Low)
*2
18/03/2025
07:00
London Hillingdon
Timeseries Graph
33 (1 Low)32 (1 Low)n/m10 (1 Low)18 (2 Low)
*2
18/03/2025
07:00
London Honor Oak Park
Timeseries Graph
34 (2 Low)n/mn/m9 (1 Low)17 (2 Low)
*2
18/03/2025
07:00
London Marylebone Road
Timeseries Graph
32 (1 Low)32 (1 Low)1 (1 Low)11 (1 Low)23 (2 Low)
*1
18/03/2025
07:00
London N. Kensington
Timeseries Graph
44 (2 Low)34 (1 Low)n/a9 (1 Low)16 (1 Low)
*2
18/03/2025
07:00
London Teddington Bushy Park
Timeseries Graph
n/mn/mn/m9 (1 Low)18 (2 Low)
*2
18/03/2025
07:00
London Westminster
Timeseries Graph
30 (1 Low)37 (1 Low)n/m9 (1 Low)n/m 18/03/2025
07:00
Southwark A2 Old Kent Road
Timeseries Graph
n/m47 (1 Low)n/mn/m29 (2 Low)
*1
18/03/2025
07:00

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Highland

Latest measured levels based on data provided by the 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
26 (1 Low)15 (1 Low)n/mn/mn/m 18/03/2025
07:00
Inverness
Timeseries Graph
n/m24 (1 Low)n/m5 (1 Low)12 (1 Low)
*2
18/03/2025
07:00
Lerwick
Timeseries Graph
81 (3 Low)n/mn/mn/mn/m 18/03/2025
07:00
Strathvaich
Timeseries Graph
41 (2 Low)n/mn/mn/mn/m 18/03/2025
07:00

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North East

Latest measured levels based on data provided by the 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
48 (2 Low)40 (1 Low)n/m10 (1 Low)30 (2 Low)
*2
18/03/2025
07:00
Kielder Water
Timeseries Graph
17 (1 Low)n/mn/m4 (1 Low)8 (1 Low)
*2
18/03/2025
07:00
Middlesbrough
Timeseries Graph
47 (2 Low)25 (1 Low)0 (1 Low)4 (1 Low)22 (2 Low)
*1
18/03/2025
07:00
Newcastle Centre
Timeseries Graph
20 (1 Low)55 (1 Low)n/m8 (1 Low)23 (2 Low)
*1
18/03/2025
07:00
Newcastle Cradlewell Roadside
Timeseries Graph
n/m58 (1 Low)n/m8 (1 Low)19 (2 Low)
*2
18/03/2025
07:00
Stockton-on-Tees A1305 Roadside
Timeseries Graph
n/m66 (1 Low)n/m8 (1 Low)n/m 18/03/2025
07:00
Stockton-on-Tees Eaglescliffe
Timeseries Graph
n/m36 (1 Low)n/m7 (1 Low)33 (2 Low)
*1
18/03/2025
07:00
Sunderland Silksworth
Timeseries Graph
42 (2 Low)24 (1 Low)n/m7 (1 Low)19 (2 Low)
*2
18/03/2025
07:00
Sunderland Wessington Way
Timeseries Graph
n/m41 (1 Low)n/m7 (1 Low)n/m 18/03/2025
07:00

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North East Scotland

Latest measured levels based on data provided by the 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
42 (2 Low)68 (2 Low)n/m6 (1 Low)14 (1 Low)
*2
18/03/2025
07:00
Aberdeen Wellington Road
Timeseries Graph
n/m36 (1 Low)n/mn/mn/m 18/03/2025
07:00
Dundee Mains Loan
Timeseries Graph
n/m15 (1 Low)n/mn/mn/m 18/03/2025
07:00
Perth Glasgow Road
Timeseries Graph
n/m47 (1 Low)n/mn/mn/m 18/03/2025
07:00

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North Wales

Latest measured levels based on data provided by the 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
62 (2 Low)6 (1 Low)n/mn/mn/m 18/03/2025
07:00
Wrexham
Timeseries Graph
n/m31 (1 Low)2 (1 Low)10 (1 Low)19 (2 Low)
*2
18/03/2025
07:00

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North West & Merseyside

Latest measured levels based on data provided by the 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/m26 (1 Low)n/m9 (1 Low)n/m 18/03/2025
07:00
Blackburn Accrington Road
Timeseries Graph
n/m13 (1 Low)n/mn/mn/m 18/03/2025
07:00
Blackburn Audley Park
Timeseries Graph
61 (2 Low)n/mn/m9 (1 Low)16 (1 Low)
*2
18/03/2025
07:00
Blackpool Marton
Timeseries Graph
61 (2 Low)9 (1 Low)n/m8 (1 Low)13 (1 Low)
*2
18/03/2025
07:00
Blackpool Whitegate Drive
Timeseries Graph
n/mn/mn/m9 (1 Low)n/m 18/03/2025
07:00
Bury Whitefield Roadside
Timeseries Graph
n/m12 (1 Low)n/mn/m18 (2 Low)
*1
18/03/2025
07:00
Carlisle Morton A595
Timeseries Graph
n/m29 (1 Low)n/m4 (1 Low)11 (1 Low)
*1
18/03/2025
07:00
Crewe Coppenhall
Timeseries Graph
52 (2 Low)23 (1 Low)n/m8 (1 Low)13 (1 Low)
*2
18/03/2025
07:00
Glazebury
Timeseries Graph
41 (2 Low)16 (1 Low)n/m7 (1 Low)12 (1 Low)
*2
18/03/2025
07:00
Liverpool Speke
Timeseries Graph
46 (2 Low)16 (1 Low)1 (1 Low)8 (1 Low)20 (2 Low)
*1
18/03/2025
07:00
Liverpool Thirlmere Park
Timeseries Graph
55 (2 Low)n/mn/m8 (1 Low)15 (1 Low)
*2
18/03/2025
07:00
Manchester Piccadilly
Timeseries Graph
49 (2 Low)33 (1 Low)n/a10 (1 Low)18 (2 Low)
*2
18/03/2025
07:00
Manchester Sharston
Timeseries Graph
51 (2 Low)6 (1 Low)n/m9 (1 Low)16 (1 Low)
*2
18/03/2025
07:00
Middlewich St Michael's Way
Timeseries Graph
n/mn/mn/m8 (1 Low)n/m 18/03/2025
07:00
Preston
Timeseries Graph
60 (2 Low)11 (1 Low)n/m8 (1 Low)14 (1 Low)
*2
18/03/2025
07:00
Salford Eccles
Timeseries Graph
n/a40 (1 Low)n/m10 (1 Low)22 (2 Low)
*2
18/03/2025
07:00
Shaw Crompton Way
Timeseries Graph
n/m14 (1 Low)n/mn/mn/m 18/03/2025
07:00
St Helens Linkway
Timeseries Graph
n/m28 (1 Low)n/mn/m15 (1 Low)
*1
18/03/2025
07:00
Warrington
Timeseries Graph
n/m21 (1 Low)n/m7 (1 Low)18 (2 Low)
*1
18/03/2025
07:00
Widnes Milton Road
Timeseries Graph
n/m27 (1 Low)n/mn/mn/m 18/03/2025
07:00
Wigan Centre
Timeseries Graph
58 (2 Low)16 (1 Low)n/m8 (1 Low)17 (2 Low)
*2
18/03/2025
07:00
Wirral Tranmere
Timeseries Graph
54 (2 Low)19 (1 Low)n/m8 (1 Low)14 (1 Low)
*2
18/03/2025
07:00

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Northern Ireland

Latest measured levels based on data provided by the 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/m9 (1 Low)n/mn/m17 (2 Low)
*1
18/03/2025
07:00
Ballymena Antrim Road
Timeseries Graph
n/m8 (1 Low)n/mn/mn/m 18/03/2025
07:00
Ballymena Ballykeel
Timeseries Graph
n/mn/an/an/mn/m 27/02/2025
08:00
Belfast Centre
Timeseries Graph
61 (2 Low)14 (1 Low)1 (1 Low)9 (1 Low)16 (1 Low)
*2
18/03/2025
07:00
Belfast Stockman's Lane
Timeseries Graph
n/m20 (1 Low)n/mn/m27 (2 Low)
*1
18/03/2025
07:00
Derry Rosemount
Timeseries Graph
67 (3 Low)8 (1 Low)3 (1 Low)n/a16 (1 Low)
*1
18/03/2025
07:00
Lough Navar
Timeseries Graph
59 (2 Low)n/mn/m6 (1 Low)10 (1 Low)
*2
18/03/2025
07:00

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Scottish Borders

Latest measured levels based on data provided by the 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/m30 (1 Low)n/mn/mn/m 18/03/2025
07:00
Eskdalemuir
Timeseries Graph
62 (2 Low)0 (1 Low)n/mn/mn/m 18/03/2025
07:00
Peebles
Timeseries Graph
49 (2 Low)11 (1 Low)n/mn/mn/m 18/03/2025
07:00

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South East

Latest measured levels based on data provided by the 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
39 (2 Low)13 (1 Low)n/m12 (2 Low)18 (2 Low)
*2
18/03/2025
07:00
Chatham Roadside
Timeseries Graph
n/m30 (1 Low)n/m11 (1 Low)29 (2 Low)
*1
18/03/2025
07:00
Chilbolton Observatory
Timeseries Graph
41 (2 Low)14 (1 Low)1 (1 Low)11 (1 Low)16 (1 Low)
*2
18/03/2025
07:00
Eastbourne
Timeseries Graph
43 (2 Low)11 (1 Low)n/m10 (1 Low)15 (1 Low)
*2
18/03/2025
07:00
Horley
Timeseries Graph
n/m16 (1 Low)n/m11 (1 Low)n/a 18/03/2025
07:00
Lullington Heath
Timeseries Graph
54 (2 Low)6 (1 Low)1 (1 Low)11 (1 Low)16 (1 Low)
*2
18/03/2025
07:00
Maidstone Upper Stone Street
Timeseries Graph
n/mn/mn/m12 (2 Low)23 (2 Low)
*2
18/03/2025
07:00
Milton Keynes Civic Centre
Timeseries Graph
40 (2 Low)n/mn/mn/an/a 18/03/2025
07:00
Oxford Centre Roadside
Timeseries Graph
n/m32 (1 Low)n/mn/mn/m 18/03/2025
07:00
Oxford St Ebbes
Timeseries Graph
50 (2 Low)12 (1 Low)n/m8 (1 Low)13 (1 Low)
*2
18/03/2025
07:00
Portsmouth
Timeseries Graph
45 (2 Low)25 (1 Low)n/m12 (2 Low)20 (2 Low)
*2
18/03/2025
07:00
Portsmouth Anglesea Road
Timeseries Graph
n/m9 (1 Low)n/m12 (2 Low)18 (2 Low)
*2
18/03/2025
07:00
Reading London Road
Timeseries Graph
n/mn/an/mn/m24 (2 Low)
*1
18/03/2025
07:00
Reading New Town
Timeseries Graph
33 (1 Low)30 (1 Low)n/m9 (1 Low)15 (1 Low)
*2
18/03/2025
07:00
Reading Rose Kiln Lane
Timeseries Graph
n/mn/mn/m9 (1 Low)n/m 18/03/2025
07:00
Rochester Stoke
Timeseries Graph
51 (2 Low)19 (1 Low)4 (1 Low)9 (1 Low)16 (1 Low)
*2
18/03/2025
07:00
Slough Windmill Bath Road
Timeseries Graph
n/mn/mn/m11 (1 Low)26 (2 Low)
*2
18/03/2025
07:00
Southampton A33
Timeseries Graph
n/m14 (1 Low)n/m12 (2 Low)19 (2 Low)
*2
18/03/2025
07:00
Southampton Centre
Timeseries Graph
44 (2 Low)30 (1 Low)2 (1 Low)13 (2 Low)20 (2 Low)
*2
18/03/2025
07:00
Storrington Roadside
Timeseries Graph
n/m37 (1 Low)n/m14 (2 Low)25 (2 Low)
*2
18/03/2025
07:00
Worthing A27 Roadside
Timeseries Graph
n/m28 (1 Low)n/m15 (2 Low)n/m 18/03/2025
07:00
Worthing East Ten Acres
Timeseries Graph
n/mn/mn/m13 (2 Low)21 (2 Low)
*2
18/03/2025
07:00

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South Wales

Latest measured levels based on data provided by the 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
n/an/an/an/an/a 26/02/2025
15:00
Cardiff Newport Road
Timeseries Graph
n/m22 (1 Low)n/mn/m21 (2 Low)
*1
18/03/2025
07:00
Chepstow A48
Timeseries Graph
n/m16 (1 Low)n/m9 (1 Low)23 (2 Low)
*1
18/03/2025
07:00
Cwmbran Crownbridge
Timeseries Graph
61 (2 Low)13 (1 Low)n/mn/mn/m 18/03/2025
07:00
Hafod-yr-ynys Hill Roadside
Timeseries Graph
n/mn/an/mn/mn/m 05/03/2025
14:00
Narberth
Timeseries Graph
63 (2 Low)4 (1 Low)1 (1 Low)7 (1 Low)11 (1 Low)
*2
18/03/2025
07:00
Newport
Timeseries Graph
n/m30 (1 Low)n/m9 (1 Low)15 (1 Low)
*2
18/03/2025
07:00
Port Talbot Margam
Timeseries Graph
65 (2 Low)11 (1 Low)2 (1 Low)6 (1 Low)14 (1 Low)
*3
18/03/2025
07:00
Swansea Roadside
Timeseries Graph
n/m39 (1 Low)n/m8 (1 Low)17 (2 Low)
*1
18/03/2025
07:00

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South West

Latest measured levels based on data provided by the 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/mn/mn/m10 (1 Low)16 (1 Low)
*2
18/03/2025
07:00
Bath A4 Roadside
Timeseries Graph
n/m24 (1 Low)n/mn/mn/m 18/03/2025
07:00
Bournemouth
Timeseries Graph
n/a14 (1 Low)n/m14 (2 Low)n/m 18/03/2025
07:00
Bristol St Paul's
Timeseries Graph
43 (2 Low)28 (1 Low)n/m9 (1 Low)20 (2 Low)
*1
18/03/2025
07:00
Bristol Temple Way
Timeseries Graph
n/m33 (1 Low)n/m11 (1 Low)21 (2 Low)
*2
18/03/2025
07:00
Charlton Mackrell
Timeseries Graph
48 (2 Low)13 (1 Low)n/m11 (1 Low)15 (1 Low)
*2
18/03/2025
07:00
Christchurch Barrack Road
Timeseries Graph
n/m25 (1 Low)n/m14 (2 Low)n/m 18/03/2025
07:00
Exeter Roadside
Timeseries Graph
52 (2 Low)26 (1 Low)n/mn/mn/m 18/03/2025
07:00
Honiton
Timeseries Graph
55 (2 Low)9 (1 Low)n/m11 (1 Low)15 (1 Low)
*2
18/03/2025
07:00
Plymouth Centre
Timeseries Graph
61 (2 Low)18 (1 Low)n/m12 (2 Low)20 (2 Low)
*2
18/03/2025
07:00
Plymouth Tavistock Road
Timeseries Graph
n/m6 (1 Low)n/mn/mn/m 18/03/2025
06:00
Saltash Callington Road
Timeseries Graph
n/mn/mn/m7 (1 Low)22 (2 Low)
*1
18/03/2025
07:00
Swindon Walcot
Timeseries Graph
35 (2 Low)24 (1 Low)n/m9 (1 Low)15 (1 Low)
*2
18/03/2025
07:00
Yarner Wood
Timeseries Graph
64 (2 Low)10 (1 Low)n/m10 (1 Low)14 (1 Low)
*2
18/03/2025
07:00

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West Ireland

Latest measured levels based on data provided by the 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
n/an/mn/mn/mn/m 11/03/2025
15:00

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West Midlands

Latest measured levels based on data provided by the 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)38 (1 Low)n/m9 (1 Low)16 (1 Low)
*2
18/03/2025
07:00
Birmingham Ladywood
Timeseries Graph
46 (2 Low)15 (1 Low)2 (1 Low)8 (1 Low)16 (1 Low)
*2
18/03/2025
07:00
Burton-on-Trent Horninglow
Timeseries Graph
36 (2 Low)19 (1 Low)n/m7 (1 Low)13 (1 Low)
*2
18/03/2025
07:00
Cannock A5190 Roadside
Timeseries Graph
n/m26 (1 Low)n/m8 (1 Low)n/m 18/03/2025
07:00
Coventry Allesley
Timeseries Graph
48 (2 Low)15 (1 Low)n/m8 (1 Low)13 (1 Low)
*2
18/03/2025
07:00
Coventry Binley Road
Timeseries Graph
n/m18 (1 Low)n/m8 (1 Low)15 (1 Low)
*2
18/03/2025
07:00
Leamington Spa
Timeseries Graph
58 (2 Low)14 (1 Low)n/m8 (1 Low)15 (1 Low)
*2
18/03/2025
07:00
Leamington Spa Rugby Road
Timeseries Graph
n/m11 (1 Low)n/m8 (1 Low)14 (1 Low)
*2
18/03/2025
07:00
Leominster
Timeseries Graph
62 (2 Low)6 (1 Low)n/mn/mn/m 18/03/2025
07:00
Oldbury Birmingham Road
Timeseries Graph
n/m47 (1 Low)n/mn/mn/m 18/03/2025
07:00
Shrewsbury Underdale
Timeseries Graph
n/mn/mn/m8 (1 Low)14 (1 Low)
*2
18/03/2025
07:00
Stoke-on-Trent A50 Roadside
Timeseries Graph
n/m40 (1 Low)n/m10 (1 Low)18 (2 Low)
*2
18/03/2025
07:00
Stoke-on-Trent Centre
Timeseries Graph
56 (2 Low)12 (1 Low)n/m8 (1 Low)16 (1 Low)
*2
18/03/2025
07:00
Telford Hollinswood
Timeseries Graph
55 (2 Low)19 (1 Low)n/m8 (1 Low)14 (1 Low)
*2
18/03/2025
07:00
Walsall Woodlands
Timeseries Graph
47 (2 Low)33 (1 Low)n/mn/mn/m 18/03/2025
07:00
West Bromwich Kenrick Park
Timeseries Graph
43 (2 Low)37 (1 Low)n/mn/mn/m 18/03/2025
07:00

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Yorkshire & Humberside

Latest measured levels based on data provided by the 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
23 (1 Low)45 (1 Low)3 (1 Low)9 (1 Low)16 (1 Low)
*2
18/03/2025
07:00
Bradford Mayo Avenue
Timeseries Graph
n/m37 (1 Low)n/mn/mn/m 18/03/2025
06:00
Bradford Shipley Airedale Road
Timeseries Graph
n/mn/mn/m11 (1 Low)28 (2 Low)
*2
18/03/2025
07:00
Dewsbury Ashworth Grange
Timeseries Graph
14 (1 Low)42 (1 Low)n/m10 (1 Low)20 (2 Low)
*2
18/03/2025
07:00
Doncaster A630 Cleveland Street
Timeseries Graph
n/m61 (1 Low)n/m8 (1 Low)n/m 18/03/2025
07:00
Harrogate Woodlands
Timeseries Graph
n/mn/mn/m7 (1 Low)16 (1 Low)
*2
18/03/2025
07:00
High Muffles
Timeseries Graph
65 (2 Low)2 (1 Low)n/m5 (1 Low)11 (1 Low)
*2
18/03/2025
07:00
Hull Freetown
Timeseries Graph
36 (2 Low)52 (1 Low)1 (1 Low)9 (1 Low)28 (2 Low)
*2
18/03/2025
07:00
Hull Holderness Road
Timeseries Graph
n/m61 (1 Low)n/m9 (1 Low)24 (2 Low)
*2
18/03/2025
07:00
Immingham Woodlands Avenue
Timeseries Graph
58 (2 Low)24 (1 Low)n/m7 (1 Low)16 (1 Low)
*2
18/03/2025
07:00
Leeds Centre
Timeseries Graph
50 (2 Low)22 (1 Low)2 (1 Low)8 (1 Low)18 (2 Low)
*2
18/03/2025
07:00
Leeds Headingley Kerbside
Timeseries Graph
n/m27 (1 Low)n/m11 (1 Low)41 (3 Low)
*1
18/03/2025
07:00
Rotherham East Dene
Timeseries Graph
n/mn/mn/m10 (1 Low)17 (2 Low)
*2
18/03/2025
07:00
Scunthorpe Town
Timeseries Graph
n/m21 (1 Low)0 (1 Low)n/m30 (2 Low)
*1
18/03/2025
07:00
Sheffield Barnsley Road
Timeseries Graph
n/m71 (2 Low)n/m9 (1 Low)n/m 18/03/2025
07:00
Sheffield Devonshire Green
Timeseries Graph
15 (1 Low)36 (1 Low)n/m10 (1 Low)18 (2 Low)
*2
18/03/2025
07:00
Sheffield Tinsley
Timeseries Graph
3 (1 Low)49 (1 Low)n/m8 (1 Low)16 (1 Low)
*2
18/03/2025
07:00
York Bootham
Timeseries Graph
37 (2 Low)13 (1 Low)n/m7 (1 Low)17 (2 Low)
*1
18/03/2025
07:00
York Fishergate
Timeseries Graph
n/m40 (1 Low)n/m6 (1 Low)34 (3 Low)
*1
18/03/2025
07:00

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