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 11pm Sun 18th May 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
89 (3 Low)n/mn/m7 (1 Low)12 (1 Low)
*2
18/05/2025
23:00:00
Bush Estate
Timeseries Graph
n/an/an/mn/mn/m 18/05/2025
15:00:00
Dumbarton Roadside
Timeseries Graph
n/m3 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Edinburgh Nicolson Street
Timeseries Graph
n/m2 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Edinburgh St Leonards
Timeseries Graph
82 (3 Low)4 (1 Low)n/a7 (1 Low)15 (1 Low)
*2
18/05/2025
23:00:00
Glasgow Great Western Road
Timeseries Graph
n/m5 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Glasgow High Street
Timeseries Graph
n/m4 (1 Low)n/m6 (1 Low)13 (1 Low)
*2
18/05/2025
23:00:00
Glasgow Kerbside
Timeseries Graph
n/m28 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Glasgow Townhead
Timeseries Graph
n/a5 (1 Low)n/m6 (1 Low)14 (1 Low)
*2
18/05/2025
23:00:00
Grangemouth
Timeseries Graph
n/m11 (1 Low)2 (1 Low)7 (1 Low)16 (1 Low)
*1
18/05/2025
23:00:00
Grangemouth Moray
Timeseries Graph
n/m16 (1 Low)n/mn/mn/m 18/05/2025
22:00:00
Greenock A8 Roadside
Timeseries Graph
n/m2 (1 Low)n/m5 (1 Low)15 (1 Low)
*2
18/05/2025
23:00:00

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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
83 (3 Low)6 (1 Low)n/m10 (1 Low)17 (2 Low)
*2
18/05/2025
23:00:00
Chesterfield Roadside
Timeseries Graph
n/mn/an/m11 (1 Low)18 (2 Low)
*2
18/05/2025
23:00:00
Derby St Alkmund's Way
Timeseries Graph
n/m13 (1 Low)n/m11 (1 Low)n/m 18/05/2025
23:00:00
Derby Stockbrook Park
Timeseries Graph
74 (3 Low)n/mn/m10 (1 Low)17 (2 Low)
*2
18/05/2025
23:00:00
Ladybower
Timeseries Graph
95 (3 Low)2 (1 Low)4 (1 Low)10 (1 Low)15 (1 Low)
*2
18/05/2025
23:00:00
Leicester A594 Roadside
Timeseries Graph
n/m15 (1 Low)n/m13 (2 Low)20 (2 Low)
*2
18/05/2025
23:00:00
Leicester University
Timeseries Graph
87 (3 Low)5 (1 Low)n/m12 (2 Low)19 (2 Low)
*2
18/05/2025
23:00:00
Lincoln Canwick Road
Timeseries Graph
n/m6 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Mansfield Ladybrook
Timeseries Graph
n/mn/mn/m11 (1 Low)18 (2 Low)
*2
18/05/2025
23:00:00
Northampton Spring Park
Timeseries Graph
85 (3 Low)2 (1 Low)n/m14 (2 Low)n/m 18/05/2025
23:00:00
Nottingham Bilborough
Timeseries Graph
n/mn/mn/m11 (1 Low)18 (2 Low)
*2
18/05/2025
23:00:00
Nottingham Kenmore Gardens
Timeseries Graph
82 (3 Low)7 (1 Low)1 (1 Low)13 (2 Low)22 (2 Low)
*2
18/05/2025
23:00:00
Nottingham Western Boulevard
Timeseries Graph
n/m10 (1 Low)n/m12 (2 Low)21 (2 Low)
*2
18/05/2025
23:00:00
Tallington
Timeseries Graph
86 (3 Low)n/mn/m11 (1 Low)18 (2 Low)
*2
18/05/2025
23:00:00
Toft Newton
Timeseries Graph
91 (3 Low)3 (1 Low)n/m11 (1 Low)17 (2 Low)
*2
18/05/2025
23:00:00

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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/m2 (1 Low)n/m11 (1 Low)17 (2 Low)
*2
18/05/2025
23:00:00
Cambridge Roadside
Timeseries Graph
n/m12 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Luton A505 Roadside
Timeseries Graph
n/m7 (1 Low)n/m13 (2 Low)n/m 18/05/2025
23:00:00
Norwich Lakenfields
Timeseries Graph
84 (3 Low)5 (1 Low)n/m10 (1 Low)15 (1 Low)
*2
18/05/2025
23:00:00
Peterborough Garton End
Timeseries Graph
n/mn/mn/m11 (1 Low)19 (2 Low)
*2
18/05/2025
23:00:00
Sibton
Timeseries Graph
76 (3 Low)n/mn/m9 (1 Low)15 (1 Low)
*2
18/05/2025
23:00:00
Southend Shoeburyness
Timeseries Graph
n/mn/mn/m9 (1 Low)15 (1 Low)
*2
18/05/2025
23:00:00
Southend-on-Sea
Timeseries Graph
91 (3 Low)5 (1 Low)n/m10 (1 Low)17 (2 Low)
*2
18/05/2025
23:00:00
St Osyth
Timeseries Graph
101 (4 Moderate)2 (1 Low)n/m9 (1 Low)15 (1 Low)
*2
18/05/2025
23:00:00
Stanford-le-Hope Roadside
Timeseries Graph
n/m9 (1 Low)n/m12 (2 Low)20 (2 Low)
*1
18/05/2025
23:00:00
Thurrock
Timeseries Graph
n/a7 (1 Low)1 (1 Low)11 (1 Low)18 (2 Low)
*2
18/05/2025
23:00:00
Weybourne
Timeseries Graph
93 (3 Low)n/mn/m12 (2 Low)21 (2 Low)
*2
18/05/2025
23:00:00
Wicken Fen
Timeseries Graph
71 (3 Low)2 (1 Low)n/a12 (2 Low)21 (2 Low)
*2
18/05/2025
23:00:00

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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/m13 (1 Low)n/m14 (2 Low)30 (2 Low)
*1
18/05/2025
23:00:00
Ealing Horn Lane
Timeseries Graph
n/mn/mn/mn/m25 (2 Low)
*1
18/05/2025
23:00:00
Haringey Roadside
Timeseries Graph
n/m15 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
London Bexley
Timeseries Graph
n/m12 (1 Low)n/m12 (2 Low)19 (2 Low)
*2
18/05/2025
23:00:00
London Bloomsbury
Timeseries Graph
73 (3 Low)32 (1 Low)2 (1 Low)11 (1 Low)18 (2 Low)
*2
18/05/2025
23:00:00
London Haringey Priory Park South
Timeseries Graph
86 (3 Low)7 (1 Low)n/m10 (1 Low)17 (2 Low)
*2
18/05/2025
23:00:00
London Harlington
Timeseries Graph
n/an/an/m12 (2 Low)18 (2 Low)
*2
18/05/2025
22:00:00
London Hillingdon
Timeseries Graph
78 (3 Low)4 (1 Low)n/m12 (2 Low)18 (2 Low)
*2
18/05/2025
23:00:00
London Honor Oak Park
Timeseries Graph
90 (3 Low)n/mn/m11 (1 Low)17 (2 Low)
*2
18/05/2025
23:00:00
London Marylebone Road
Timeseries Graph
n/an/a1 (1 Low)n/an/a 18/05/2025
23:00:00
London N. Kensington
Timeseries Graph
88 (3 Low)5 (1 Low)3 (1 Low)11 (1 Low)18 (2 Low)
*2
18/05/2025
23:00:00
London Norbury Manor School
Timeseries Graph
n/mn/mn/m11 (1 Low)16 (1 Low)
*2
18/05/2025
23:00:00
London Teddington Bushy Park
Timeseries Graph
n/mn/mn/m12 (2 Low)20 (2 Low)
*2
18/05/2025
23:00:00
London Westminster
Timeseries Graph
65 (2 Low)14 (1 Low)n/m10 (1 Low)n/m 18/05/2025
23:00:00
Southwark A2 Old Kent Road
Timeseries Graph
n/m29 (1 Low)n/mn/m24 (2 Low)
*1
18/05/2025
23:00:00

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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
86 (3 Low)0 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Inverness
Timeseries Graph
n/m1 (1 Low)n/m6 (1 Low)12 (1 Low)
*2
18/05/2025
23:00:00
Lerwick
Timeseries Graph
97 (3 Low)n/mn/mn/mn/m 18/05/2025
23:00:00
Strathvaich
Timeseries Graph
92 (3 Low)n/mn/mn/mn/m 18/05/2025
23:00:00

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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
92 (3 Low)1 (1 Low)n/m12 (2 Low)27 (2 Low)
*2
18/05/2025
23:00:00
Kielder Water
Timeseries Graph
80 (3 Low)n/mn/m6 (1 Low)11 (1 Low)
*2
18/05/2025
23:00:00
Middlesbrough
Timeseries Graph
88 (3 Low)5 (1 Low)1 (1 Low)7 (1 Low)24 (2 Low)
*1
18/05/2025
23:00:00
Newcastle Centre
Timeseries Graph
84 (3 Low)9 (1 Low)n/m9 (1 Low)24 (2 Low)
*1
18/05/2025
23:00:00
Newcastle Cradlewell Roadside
Timeseries Graph
n/m4 (1 Low)n/m9 (1 Low)17 (2 Low)
*2
18/05/2025
23:00:00
Stockton-on-Tees A1305 Roadside
Timeseries Graph
n/m11 (1 Low)n/mn/an/m 18/05/2025
23:00:00
Stockton-on-Tees Eaglescliffe
Timeseries Graph
n/m2 (1 Low)n/m10 (1 Low)25 (2 Low)
*1
18/05/2025
23:00:00
Sunderland Silksworth
Timeseries Graph
89 (3 Low)2 (1 Low)n/m10 (1 Low)20 (2 Low)
*2
18/05/2025
23:00:00
Sunderland Wessington Way
Timeseries Graph
n/m1 (1 Low)n/m10 (1 Low)n/m 18/05/2025
23:00:00

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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
94 (3 Low)3 (1 Low)n/m6 (1 Low)12 (1 Low)
*2
18/05/2025
23:00:00
Aberdeen Wellington Road
Timeseries Graph
n/m24 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Dundee Mains Loan
Timeseries Graph
n/m1 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Perth Glasgow Road
Timeseries Graph
n/m5 (1 Low)n/mn/mn/m 18/05/2025
23:00:00

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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
96 (3 Low)4 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Wrexham
Timeseries Graph
n/m10 (1 Low)3 (1 Low)10 (1 Low)16 (1 Low)
*2
18/05/2025
23:00:00

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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/m17 (1 Low)n/m10 (1 Low)n/m 18/05/2025
23:00:00
Blackburn Accrington Road
Timeseries Graph
n/m5 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Blackburn Audley Park
Timeseries Graph
86 (3 Low)n/mn/m8 (1 Low)14 (1 Low)
*2
18/05/2025
23:00:00
Blackpool Marton
Timeseries Graph
86 (3 Low)7 (1 Low)n/m8 (1 Low)13 (1 Low)
*2
18/05/2025
23:00:00
Blackpool Whitegate Drive
Timeseries Graph
n/mn/mn/m8 (1 Low)n/m 18/05/2025
23:00:00
Bury Whitefield Roadside
Timeseries Graph
n/m4 (1 Low)n/mn/m18 (2 Low)
*1
18/05/2025
23:00:00
Carlisle Morton A595
Timeseries Graph
n/m3 (1 Low)n/m5 (1 Low)12 (1 Low)
*1
18/05/2025
23:00:00
Crewe Coppenhall
Timeseries Graph
92 (3 Low)8 (1 Low)n/m11 (1 Low)17 (2 Low)
*2
18/05/2025
23:00:00
Glazebury
Timeseries Graph
81 (3 Low)6 (1 Low)n/m8 (1 Low)14 (1 Low)
*2
18/05/2025
23:00:00
Liverpool Speke
Timeseries Graph
92 (3 Low)7 (1 Low)1 (1 Low)12 (2 Low)23 (2 Low)
*1
18/05/2025
23:00:00
Liverpool Thirlmere Park
Timeseries Graph
90 (3 Low)n/mn/m10 (1 Low)16 (1 Low)
*2
18/05/2025
23:00:00
Manchester Piccadilly
Timeseries Graph
83 (3 Low)14 (1 Low)1 (1 Low)10 (1 Low)17 (2 Low)
*2
18/05/2025
23:00:00
Manchester Sharston
Timeseries Graph
77 (3 Low)6 (1 Low)n/m10 (1 Low)16 (1 Low)
*2
18/05/2025
23:00:00
Middlewich St Michael's Way
Timeseries Graph
n/mn/mn/m10 (1 Low)n/m 18/05/2025
23:00:00
Preston
Timeseries Graph
86 (3 Low)6 (1 Low)n/m8 (1 Low)15 (1 Low)
*2
18/05/2025
23:00:00
Salford Eccles
Timeseries Graph
88 (3 Low)16 (1 Low)n/m11 (1 Low)19 (2 Low)
*2
18/05/2025
23:00:00
Shaw Crompton Way
Timeseries Graph
n/m13 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
St Helens Linkway
Timeseries Graph
n/m11 (1 Low)n/mn/m15 (1 Low)
*1
18/05/2025
23:00:00
Tameside A635 Manchester Road
Timeseries Graph
n/mn/mn/m8 (1 Low)n/m 18/05/2025
23:00:00
Warrington
Timeseries Graph
n/m11 (1 Low)n/m9 (1 Low)18 (2 Low)
*1
18/05/2025
23:00:00
Widnes Milton Road
Timeseries Graph
n/m19 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Wigan Centre
Timeseries Graph
85 (3 Low)6 (1 Low)n/m9 (1 Low)17 (2 Low)
*2
18/05/2025
23:00:00
Wirral Tranmere
Timeseries Graph
87 (3 Low)6 (1 Low)n/m9 (1 Low)14 (1 Low)
*2
18/05/2025
23:00:00

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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/m13 (1 Low)
*1
18/05/2025
23:00:00
Ballymena Antrim Road
Timeseries Graph
n/m7 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Ballymena Ballykeel
Timeseries Graph
n/mn/an/an/mn/m 27/02/2025
02:00:00
Belfast Centre
Timeseries Graph
72 (3 Low)7 (1 Low)1 (1 Low)7 (1 Low)15 (1 Low)
*2
18/05/2025
23:00:00
Belfast Stockman's Lane
Timeseries Graph
n/m7 (1 Low)n/mn/m25 (2 Low)
*1
18/05/2025
23:00:00
Derry Rosemount
Timeseries Graph
103 (4 Moderate)5 (1 Low)1 (1 Low)2 (1 Low)9 (1 Low)
*1
18/05/2025
23:00:00
Lough Navar
Timeseries Graph
88 (3 Low)n/mn/m4 (1 Low)6 (1 Low)
*2
18/05/2025
23:00:00

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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/m3 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Eskdalemuir
Timeseries Graph
87 (3 Low)1 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Peebles
Timeseries Graph
90 (3 Low)1 (1 Low)n/mn/mn/m 18/05/2025
23:00:00

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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
77 (3 Low)17 (1 Low)n/m11 (1 Low)17 (2 Low)
*2
18/05/2025
23:00:00
Chatham Roadside
Timeseries Graph
n/m7 (1 Low)n/m8 (1 Low)24 (2 Low)
*1
18/05/2025
23:00:00
Chilbolton Observatory
Timeseries Graph
93 (3 Low)11 (1 Low)1 (1 Low)11 (1 Low)14 (1 Low)
*2
18/05/2025
23:00:00
Eastbourne
Timeseries Graph
80 (3 Low)9 (1 Low)n/m8 (1 Low)13 (1 Low)
*2
18/05/2025
23:00:00
Farnborough Cherrywood
Timeseries Graph
n/mn/mn/m13 (2 Low)18 (2 Low)
*2
18/05/2025
23:00:00
Horley
Timeseries Graph
n/m14 (1 Low)n/m11 (1 Low)16 (1 Low)
*2
18/05/2025
23:00:00
Lullington Heath
Timeseries Graph
84 (3 Low)4 (1 Low)1 (1 Low)10 (1 Low)15 (1 Low)
*2
18/05/2025
23:00:00
Maidstone Upper Stone Street
Timeseries Graph
n/mn/mn/m11 (1 Low)17 (2 Low)
*2
18/05/2025
23:00:00
Milton Keynes Civic Centre
Timeseries Graph
89 (3 Low)n/mn/m14 (2 Low)21 (2 Low)
*2
18/05/2025
23:00:00
Oxford Centre Roadside
Timeseries Graph
n/m6 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Oxford St Ebbes
Timeseries Graph
89 (3 Low)2 (1 Low)n/m11 (1 Low)15 (1 Low)
*2
18/05/2025
23:00:00
Portsmouth
Timeseries Graph
90 (3 Low)10 (1 Low)n/m13 (2 Low)18 (2 Low)
*2
18/05/2025
23:00:00
Portsmouth Anglesea Road
Timeseries Graph
n/m23 (1 Low)n/m14 (2 Low)19 (2 Low)
*2
18/05/2025
23:00:00
Reading London Road
Timeseries Graph
n/m17 (1 Low)n/mn/m21 (2 Low)
*1
18/05/2025
23:00:00
Reading New Town
Timeseries Graph
85 (3 Low)4 (1 Low)n/m12 (2 Low)17 (2 Low)
*2
18/05/2025
23:00:00
Reading Rose Kiln Lane
Timeseries Graph
n/mn/mn/m12 (2 Low)n/m 18/05/2025
23:00:00
Rochester Stoke
Timeseries Graph
95 (3 Low)4 (1 Low)1 (1 Low)11 (1 Low)17 (2 Low)
*2
18/05/2025
23:00:00
Slough Windmill Bath Road
Timeseries Graph
n/mn/mn/m14 (2 Low)25 (2 Low)
*2
18/05/2025
23:00:00
Southampton A33
Timeseries Graph
n/m44 (1 Low)n/m12 (2 Low)17 (2 Low)
*2
18/05/2025
23:00:00
Southampton Centre
Timeseries Graph
78 (3 Low)24 (1 Low)5 (1 Low)13 (2 Low)18 (2 Low)
*2
18/05/2025
23:00:00
Storrington Roadside
Timeseries Graph
n/m3 (1 Low)n/m11 (1 Low)16 (1 Low)
*2
18/05/2025
23:00:00
Worthing A27 Roadside
Timeseries Graph
n/m11 (1 Low)n/m13 (2 Low)n/m 18/05/2025
23:00:00
Worthing East Ten Acres
Timeseries Graph
n/mn/mn/m12 (2 Low)18 (2 Low)
*2
18/05/2025
23:00:00

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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
97 (3 Low)5 (1 Low)1 (1 Low)10 (1 Low)20 (2 Low)
*1
18/05/2025
23:00:00
Cardiff Newport Road
Timeseries Graph
n/m17 (1 Low)n/mn/m22 (2 Low)
*1
18/05/2025
23:00:00
Chepstow A48
Timeseries Graph
n/m11 (1 Low)n/m11 (1 Low)19 (2 Low)
*1
18/05/2025
23:00:00
Cwmbran Crownbridge
Timeseries Graph
100 (3 Low)5 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Hafod-yr-ynys Hill Roadside
Timeseries Graph
n/mn/an/mn/mn/m 16/05/2025
04:00:00
Narberth
Timeseries Graph
88 (3 Low)3 (1 Low)1 (1 Low)5 (1 Low)8 (1 Low)
*2
18/05/2025
23:00:00
Newport
Timeseries Graph
n/m13 (1 Low)n/m11 (1 Low)16 (1 Low)
*2
18/05/2025
23:00:00
Port Talbot Margam
Timeseries Graph
106 (4 Moderate)4 (1 Low)2 (1 Low)8 (1 Low)19 (2 Low)
*3
18/05/2025
23:00:00
Swansea Roadside
Timeseries Graph
n/m24 (1 Low)n/m12 (2 Low)23 (2 Low)
*1
18/05/2025
23:00:00

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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)15 (1 Low)
*2
18/05/2025
23:00:00
Bath A4 Roadside
Timeseries Graph
n/m16 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Bournemouth
Timeseries Graph
96 (3 Low)4 (1 Low)n/mn/an/m 18/05/2025
23:00:00
Bristol St Paul's
Timeseries Graph
93 (3 Low)10 (1 Low)n/m10 (1 Low)21 (2 Low)
*1
18/05/2025
23:00:00
Bristol Temple Way
Timeseries Graph
n/m12 (1 Low)n/m12 (2 Low)20 (2 Low)
*2
18/05/2025
23:00:00
Charlton Mackrell
Timeseries Graph
97 (3 Low)8 (1 Low)n/m9 (1 Low)14 (1 Low)
*2
18/05/2025
23:00:00
Cheltenham A40 Gloucester Road
Timeseries Graph
n/mn/mn/m12 (2 Low)n/m 18/05/2025
23:00:00
Christchurch Barrack Road
Timeseries Graph
n/m3 (1 Low)n/m13 (2 Low)n/m 18/05/2025
23:00:00
Exeter Roadside
Timeseries Graph
87 (3 Low)12 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Gloucester Tredworth
Timeseries Graph
n/mn/mn/m18 (2 Low)25 (2 Low)
*2
18/05/2025
23:00:00
Honiton
Timeseries Graph
91 (3 Low)7 (1 Low)n/m11 (1 Low)14 (1 Low)
*2
18/05/2025
23:00:00
Plymouth Centre
Timeseries Graph
102 (4 Moderate)28 (1 Low)n/m10 (1 Low)15 (1 Low)
*2
18/05/2025
23:00:00
Plymouth Tavistock Road
Timeseries Graph
n/m27 (1 Low)n/mn/mn/m 18/05/2025
22:00:00
Saltash Callington Road
Timeseries Graph
n/mn/mn/m4 (1 Low)16 (1 Low)
*1
18/05/2025
23:00:00
Swindon Walcot
Timeseries Graph
87 (3 Low)5 (1 Low)n/m11 (1 Low)16 (1 Low)
*2
18/05/2025
23:00:00
Yarner Wood
Timeseries Graph
95 (3 Low)15 (1 Low)n/m8 (1 Low)11 (1 Low)
*2
18/05/2025
23:00:00

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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
100 (3 Low)n/mn/mn/mn/m 18/05/2025
23:00:00

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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
86 (3 Low)15 (1 Low)n/m11 (1 Low)18 (2 Low)
*2
18/05/2025
23:00:00
Birmingham Hall Green
Timeseries Graph
95 (3 Low)10 (1 Low)n/m11 (1 Low)19 (2 Low)
*2
18/05/2025
23:00:00
Birmingham Ladywood
Timeseries Graph
85 (3 Low)10 (1 Low)1 (1 Low)12 (2 Low)19 (2 Low)
*2
18/05/2025
23:00:00
Burton-on-Trent Horninglow
Timeseries Graph
83 (3 Low)10 (1 Low)n/m10 (1 Low)16 (1 Low)
*2
18/05/2025
23:00:00
Cannock A5190 Roadside
Timeseries Graph
n/m6 (1 Low)n/m10 (1 Low)n/m 18/05/2025
23:00:00
Coventry Allesley
Timeseries Graph
84 (3 Low)4 (1 Low)n/m12 (2 Low)19 (2 Low)
*2
18/05/2025
23:00:00
Coventry Binley Road
Timeseries Graph
n/m11 (1 Low)n/m13 (2 Low)20 (2 Low)
*2
18/05/2025
23:00:00
Leamington Spa
Timeseries Graph
94 (3 Low)5 (1 Low)n/m13 (2 Low)20 (2 Low)
*2
18/05/2025
23:00:00
Leamington Spa Rugby Road
Timeseries Graph
n/m3 (1 Low)n/m12 (2 Low)18 (2 Low)
*2
18/05/2025
23:00:00
Leominster
Timeseries Graph
99 (3 Low)4 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Oldbury Birmingham Road
Timeseries Graph
n/m11 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Shrewsbury Underdale
Timeseries Graph
n/mn/mn/m11 (1 Low)17 (2 Low)
*2
18/05/2025
23:00:00
Stoke-on-Trent A50 Roadside
Timeseries Graph
n/mn/an/m11 (1 Low)18 (2 Low)
*2
18/05/2025
23:00:00
Stoke-on-Trent Centre
Timeseries Graph
85 (3 Low)6 (1 Low)n/m10 (1 Low)17 (2 Low)
*2
18/05/2025
23:00:00
Telford Hollinswood
Timeseries Graph
97 (3 Low)6 (1 Low)n/m11 (1 Low)17 (2 Low)
*2
18/05/2025
23:00:00
Walsall Woodlands
Timeseries Graph
93 (3 Low)8 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
West Bromwich Kenrick Park
Timeseries Graph
87 (3 Low)11 (1 Low)n/mn/mn/m 18/05/2025
23:00:00
Worcester Tolladine
Timeseries Graph
n/mn/mn/m13 (2 Low)19 (2 Low)
*2
18/05/2025
23:00:00

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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
84 (3 Low)10 (1 Low)n/a10 (1 Low)20 (2 Low)
*2
18/05/2025
23:00:00
Bradford Mayo Avenue
Timeseries Graph
n/m43 (1 Low)n/mn/mn/m 18/05/2025
22:00:00
Bradford Shipley Airedale Road
Timeseries Graph
n/mn/mn/m10 (1 Low)18 (2 Low)
*2
18/05/2025
23:00:00
Dewsbury Ashworth Grange
Timeseries Graph
83 (3 Low)11 (1 Low)n/m11 (1 Low)19 (2 Low)
*2
18/05/2025
23:00:00
Doncaster A630 Cleveland Street
Timeseries Graph
n/m22 (1 Low)n/m11 (1 Low)n/m 18/05/2025
23:00:00
Harrogate Woodlands
Timeseries Graph
n/mn/mn/m9 (1 Low)15 (1 Low)
*2
18/05/2025
23:00:00
High Muffles
Timeseries Graph
84 (3 Low)1 (1 Low)n/m8 (1 Low)15 (1 Low)
*2
18/05/2025
23:00:00
Hull Freetown
Timeseries Graph
86 (3 Low)4 (1 Low)4 (1 Low)11 (1 Low)21 (2 Low)
*2
18/05/2025
23:00:00
Hull Holderness Road
Timeseries Graph
n/m3 (1 Low)n/m12 (2 Low)21 (2 Low)
*2
18/05/2025
23:00:00
Immingham Woodlands Avenue
Timeseries Graph
86 (3 Low)7 (1 Low)n/m11 (1 Low)20 (2 Low)
*2
18/05/2025
23:00:00
Leeds Centre
Timeseries Graph
88 (3 Low)4 (1 Low)2 (1 Low)10 (1 Low)17 (2 Low)
*2
18/05/2025
23:00:00
Leeds Headingley Kerbside
Timeseries Graph
n/m21 (1 Low)n/m12 (2 Low)22 (2 Low)
*1
18/05/2025
23:00:00
Rotherham East Dene
Timeseries Graph
n/mn/mn/m11 (1 Low)17 (2 Low)
*2
18/05/2025
23:00:00
Scunthorpe Town
Timeseries Graph
n/m3 (1 Low)1 (1 Low)10 (1 Low)24 (2 Low)
*1
18/05/2025
23:00:00
Sheffield Barnsley Road
Timeseries Graph
n/m21 (1 Low)n/m10 (1 Low)n/m 18/05/2025
23:00:00
Sheffield Devonshire Green
Timeseries Graph
85 (3 Low)7 (1 Low)n/m11 (1 Low)19 (2 Low)
*2
18/05/2025
23:00:00
Sheffield Tinsley
Timeseries Graph
78 (3 Low)6 (1 Low)n/m10 (1 Low)19 (2 Low)
*2
18/05/2025
23:00:00
York Bootham
Timeseries Graph
74 (3 Low)6 (1 Low)n/m12 (2 Low)23 (2 Low)
*1
18/05/2025
23:00:00
York Fishergate
Timeseries Graph
n/m11 (1 Low)n/m8 (1 Low)26 (2 Low)
*1
18/05/2025
23:00:00

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