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 10am Sun 23rd Aug 2026

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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
84 (3 Low)n/mn/m9 (1 Low)11 (1 Low)
*2
23/08/2026
01:00:00
Bush Estate
Timeseries Graph
87 (3 Low)2 (1 Low)n/mn/mn/m 22/08/2026
19:00:00
Dumbarton Roadside
Timeseries Graph
n/m15 (1 Low)n/mn/mn/m 22/08/2026
11:00:00
Edinburgh Nicolson Street
Timeseries Graph
n/m38 (1 Low)n/mn/mn/m 22/08/2026
19:00:00
Edinburgh St Leonards
Timeseries Graph
85 (3 Low)20 (1 Low)2 (1 Low)11 (1 Low)14 (1 Low)
*2
23/08/2026
02:30:00
Glasgow Great Western Road
Timeseries Graph
n/m25 (1 Low)n/mn/mn/m 22/08/2026
24:00:
Glasgow High Street
Timeseries Graph
n/m28 (1 Low)n/m8 (1 Low)11 (1 Low)
*2
23/08/2026
01:00:00
Glasgow Kerbside
Timeseries Graph
n/m41 (1 Low)n/mn/mn/m 23/08/2026
03:00:00
Glasgow Townhead
Timeseries Graph
77 (3 Low)22 (1 Low)n/m6 (1 Low)9 (1 Low)
*2
23/08/2026
01:00:00
Grangemouth
Timeseries Graph
n/m13 (1 Low)4 (1 Low)11 (1 Low)12 (1 Low)
*1
22/08/2026
21:15:00
Grangemouth Moray
Timeseries Graph
n/m16 (1 Low)n/mn/mn/m 23/08/2026
07:00:00
Greenock A8 Roadside
Timeseries Graph
n/m20 (1 Low)n/m6 (1 Low)8 (1 Low)
*2
23/08/2026
01:00:00

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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
76 (3 Low)8 (1 Low)n/m6 (1 Low)9 (1 Low)
*2
23/08/2026
10:00:00
Chesterfield Roadside
Timeseries Graph
n/m13 (1 Low)n/m8 (1 Low)21 (2 Low)
*2
23/08/2026
10:00:00
Derby St Alkmund's Way
Timeseries Graph
n/m31 (1 Low)n/m7 (1 Low)n/m 23/08/2026
10:00:00
Derby Stockbrook Park
Timeseries Graph
74 (3 Low)n/mn/m7 (1 Low)10 (1 Low)
*2
23/08/2026
10:00:00
Ladybower
Timeseries Graph
81 (3 Low)6 (1 Low)1 (1 Low)6 (1 Low)8 (1 Low)
*2
22/08/2026
09:15:00
Leicester A594 Roadside
Timeseries Graph
n/m75 (2 Low)n/m8 (1 Low)13 (1 Low)
*2
23/08/2026
10:00:00
Leicester University
Timeseries Graph
74 (3 Low)32 (1 Low)n/m6 (1 Low)9 (1 Low)
*2
23/08/2026
10:00:00
Lincoln Canwick Road
Timeseries Graph
n/mn/an/mn/mn/m 17/08/2026
17:00:00
Loughborough Thorpe Acre
Timeseries Graph
n/mn/mn/m7 (1 Low)10 (1 Low)
*2
23/08/2026
10:00:00
Mansfield Ladybrook
Timeseries Graph
n/mn/mn/m7 (1 Low)11 (1 Low)
*2
23/08/2026
10:00:00
Northampton Spring Park
Timeseries Graph
81 (3 Low)28 (1 Low)n/m9 (1 Low)n/m 23/08/2026
10:00:00
Nottingham Bilborough
Timeseries Graph
n/mn/mn/m7 (1 Low)10 (1 Low)
*2
23/08/2026
10:00:00
Nottingham Kenmore Gardens
Timeseries Graph
77 (3 Low)17 (1 Low)1 (1 Low)8 (1 Low)12 (1 Low)
*2
22/08/2026
08:45:00
Nottingham Western Boulevard
Timeseries Graph
n/m27 (1 Low)n/m7 (1 Low)12 (1 Low)
*2
23/08/2026
10:00:00
Tallington
Timeseries Graph
84 (3 Low)n/mn/m7 (1 Low)12 (1 Low)
*2
23/08/2026
10:00:00
Toft Newton
Timeseries Graph
87 (3 Low)12 (1 Low)n/m10 (1 Low)14 (1 Low)
*2
23/08/2026
10:00:00

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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/m22 (1 Low)n/m7 (1 Low)12 (1 Low)
*2
23/08/2026
10:00:00
Cambridge King's Hedges
Timeseries Graph
n/mn/mn/m8 (1 Low)12 (1 Low)
*2
23/08/2026
10:00:00
Cambridge Roadside
Timeseries Graph
n/m41 (1 Low)n/mn/mn/m 22/08/2026
20:00:00
Luton A505 Roadside
Timeseries Graph
n/m72 (2 Low)n/m6 (1 Low)n/m 23/08/2026
10:00:00
Norwich Lakenfields
Timeseries Graph
74 (3 Low)29 (1 Low)n/m10 (1 Low)13 (1 Low)
*2
23/08/2026
10:00:00
Peterborough Garton End
Timeseries Graph
n/mn/mn/m9 (1 Low)14 (1 Low)
*2
23/08/2026
10:00:00
Sibton
Timeseries Graph
76 (3 Low)n/mn/m9 (1 Low)13 (1 Low)
*2
23/08/2026
10:00:00
Southend Shoeburyness
Timeseries Graph
n/mn/mn/m7 (1 Low)11 (1 Low)
*2
23/08/2026
10:00:00
Southend-on-Sea
Timeseries Graph
83 (3 Low)12 (1 Low)n/m8 (1 Low)13 (1 Low)
*2
23/08/2026
10:00:00
St Osyth
Timeseries Graph
86 (3 Low)11 (1 Low)n/m8 (1 Low)14 (1 Low)
*2
23/08/2026
10:00:00
Stanford-le-Hope Roadside
Timeseries Graph
n/m35 (1 Low)n/mn/an/a 17/08/2026
10:00:00
Stevenage St Georges Way South
Timeseries Graph
n/mn/mn/m6 (1 Low)n/m 23/08/2026
10:00:00
Thurrock
Timeseries Graph
68 (3 Low)17 (1 Low)3 (1 Low)7 (1 Low)12 (1 Low)
*2
22/08/2026
21:45:00
Weybourne
Timeseries Graph
n/an/mn/m13 (2 Low)23 (2 Low)
*2
23/08/2026
08:00:00
Wicken Fen
Timeseries Graph
77 (3 Low)35 (1 Low)42 (1 Low)11 (1 Low)17 (2 Low)
*2
23/08/2026
09:45:00

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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/m48 (1 Low)n/m10 (1 Low)22 (2 Low)
*1
23/08/2026
08:00:00
Ealing Horn Lane
Timeseries Graph
n/mn/mn/mn/m28 (2 Low)
*1
23/08/2026
09:00:00
Haringey Roadside
Timeseries Graph
n/m37 (1 Low)n/mn/mn/m 23/08/2026
05:00:00
London A406 N Circular
Timeseries Graph
n/mn/mn/m7 (1 Low)n/m 23/08/2026
10:00:00
London Bexley
Timeseries Graph
n/m25 (1 Low)n/m7 (1 Low)12 (1 Low)
*2
23/08/2026
10:00:00
London Bloomsbury
Timeseries Graph
77 (3 Low)25 (1 Low)2 (1 Low)6 (1 Low)12 (1 Low)
*2
22/08/2026
11:30:00
London Farringdon Street
Timeseries Graph
n/m43 (1 Low)n/m7 (1 Low)n/m 23/08/2026
10:00:00
London Haringey Priory Park South
Timeseries Graph
81 (3 Low)26 (1 Low)n/m6 (1 Low)11 (1 Low)
*2
23/08/2026
10:00:00
London Harlington
Timeseries Graph
87 (3 Low)44 (1 Low)n/m5 (1 Low)10 (1 Low)
*2
23/08/2026
08:00:00
London Hillingdon
Timeseries Graph
91 (3 Low)46 (1 Low)n/m5 (1 Low)10 (1 Low)
*2
23/08/2026
10:00:00
London Honor Oak Park
Timeseries Graph
97 (3 Low)n/mn/m6 (1 Low)10 (1 Low)
*2
23/08/2026
10:00:00
London Marylebone Road
Timeseries Graph
88 (3 Low)39 (1 Low)4 (1 Low)9 (1 Low)17 (2 Low)
*1
23/08/2026
01:00:00
London N. Kensington
Timeseries Graph
88 (3 Low)25 (1 Low)1 (1 Low)6 (1 Low)10 (1 Low)
*2
23/08/2026
01:45:00
London Norbury Manor School
Timeseries Graph
n/mn/mn/m6 (1 Low)10 (1 Low)
*2
23/08/2026
10:00:00
London Teddington Bushy Park
Timeseries Graph
n/mn/mn/m5 (1 Low)10 (1 Low)
*2
23/08/2026
10:00:00
London Westminster
Timeseries Graph
81 (3 Low)16 (1 Low)n/mn/mn/m 22/08/2026
19:00:00
Southwark A2 Old Kent Road
Timeseries Graph
n/m30 (1 Low)n/mn/m19 (2 Low)
*1
22/08/2026
22:00:00

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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
65 (2 Low)6 (1 Low)n/mn/mn/m 22/08/2026
19:00:00
Inverness
Timeseries Graph
n/m12 (1 Low)n/m4 (1 Low)6 (1 Low)
*2
23/08/2026
01:00:00
Lerwick
Timeseries Graph
78 (3 Low)n/mn/mn/mn/m 22/08/2026
17:00:00
Strathvaich
Timeseries Graph
77 (3 Low)n/mn/mn/mn/m 22/08/2026
11:00:00

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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
Darlington Firthmoor
Timeseries Graph
n/mn/mn/m11 (1 Low)15 (1 Low)
*2
23/08/2026
10:00:00
Hartlepool St Abbs Walk
Timeseries Graph
85 (3 Low)20 (1 Low)n/m15 (2 Low)22 (2 Low)
*2
23/08/2026
10:00:00
Kielder Water
Timeseries Graph
65 (2 Low)n/mn/m8 (1 Low)11 (1 Low)
*2
23/08/2026
10:00:00
Middlesbrough
Timeseries Graph
74 (3 Low)34 (1 Low)1 (1 Low)9 (1 Low)18 (2 Low)
*1
22/08/2026
15:45:00
Newcastle Centre
Timeseries Graph
78 (3 Low)23 (1 Low)n/m11 (1 Low)17 (2 Low)
*1
23/08/2026
10:00:00
Newcastle Cradlewell Roadside
Timeseries Graph
n/mn/an/mn/an/a 10/07/2026
10:00:00
North Shields Chirton
Timeseries Graph
n/mn/mn/m11 (1 Low)16 (1 Low)
*2
23/08/2026
09:00:00
Redcar Milford Walk
Timeseries Graph
n/mn/mn/m13 (2 Low)20 (2 Low)
*2
23/08/2026
10:00:00
Stockton-on-Tees A1305 Roadside
Timeseries Graph
n/m30 (1 Low)n/m12 (2 Low)n/m 23/08/2026
10:00:00
Stockton-on-Tees Eaglescliffe
Timeseries Graph
n/m29 (1 Low)n/m10 (1 Low)17 (2 Low)
*1
23/08/2026
10:00:00
Sunderland Silksworth
Timeseries Graph
83 (3 Low)18 (1 Low)n/m12 (2 Low)17 (2 Low)
*2
23/08/2026
10:00:00
Sunderland Wessington Way
Timeseries Graph
n/m21 (1 Low)n/m11 (1 Low)n/m 23/08/2026
10:00:00

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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
66 (2 Low)14 (1 Low)n/m5 (1 Low)7 (1 Low)
*2
23/08/2026
01:00:00
Aberdeen Wellington Road
Timeseries Graph
n/m22 (1 Low)n/mn/mn/m 23/08/2026
01:00:00
Dundee Mains Loan
Timeseries Graph
n/m5 (1 Low)n/mn/mn/m 22/08/2026
21:00:00
Perth Glasgow Road
Timeseries Graph
n/m23 (1 Low)n/mn/mn/m 23/08/2026
02:00:00

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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
80 (3 Low)3 (1 Low)n/mn/mn/m 23/08/2026
03:00:00
Wrexham
Timeseries Graph
n/m16 (1 Low)2 (1 Low)6 (1 Low)9 (1 Low)
*2
22/08/2026
14:30:00

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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/m22 (1 Low)n/m7 (1 Low)n/m 23/08/2026
10:00:00
Blackburn Accrington Road
Timeseries Graph
n/m43 (1 Low)n/mn/mn/m 23/08/2026
01:00:00
Blackburn Audley Park
Timeseries Graph
67 (3 Low)n/mn/m9 (1 Low)12 (1 Low)
*2
23/08/2026
10:00:00
Blackpool Marton
Timeseries Graph
81 (3 Low)11 (1 Low)n/m9 (1 Low)12 (1 Low)
*2
23/08/2026
10:00:00
Blackpool Whitegate Drive
Timeseries Graph
n/mn/mn/m9 (1 Low)n/m 23/08/2026
10:00:00
Bury Whitefield Roadside
Timeseries Graph
n/m29 (1 Low)n/mn/m14 (1 Low)
*1
23/08/2026
01:00:00
Carlisle Morton A595
Timeseries Graph
n/m14 (1 Low)n/m12 (2 Low)10 (1 Low)
*1
23/08/2026
10:00:00
Crewe Coppenhall
Timeseries Graph
74 (3 Low)21 (1 Low)n/m7 (1 Low)11 (1 Low)
*2
23/08/2026
10:00:00
Glazebury
Timeseries Graph
70 (3 Low)28 (1 Low)n/m8 (1 Low)11 (1 Low)
*2
23/08/2026
10:00:00
Liverpool Speke
Timeseries Graph
73 (3 Low)21 (1 Low)3 (1 Low)8 (1 Low)13 (1 Low)
*1
23/08/2026
02:45:00
Liverpool Thirlmere Park
Timeseries Graph
78 (3 Low)n/mn/m7 (1 Low)11 (1 Low)
*2
23/08/2026
10:00:00
Manchester Piccadilly
Timeseries Graph
60 (2 Low)58 (1 Low)2 (1 Low)10 (1 Low)16 (1 Low)
*2
23/08/2026
09:15:00
Manchester Sharston
Timeseries Graph
71 (3 Low)44 (1 Low)n/m6 (1 Low)10 (1 Low)
*2
23/08/2026
04:00:00
Middlewich St Michael's Way
Timeseries Graph
n/mn/mn/m9 (1 Low)n/m 23/08/2026
08:00:00
Preston
Timeseries Graph
68 (3 Low)22 (1 Low)n/m9 (1 Low)13 (1 Low)
*2
23/08/2026
10:00:00
Rochdale Belfield
Timeseries Graph
n/mn/mn/m8 (1 Low)12 (1 Low)
*2
23/08/2026
10:00:00
Salford Eccles
Timeseries Graph
75 (3 Low)47 (1 Low)n/m9 (1 Low)13 (1 Low)
*2
23/08/2026
10:00:00
Shaw Crompton Way
Timeseries Graph
n/m37 (1 Low)n/mn/mn/m 22/08/2026
23:00:00
St Helens Linkway
Timeseries Graph
n/m53 (1 Low)n/mn/m14 (1 Low)
*1
23/08/2026
01:00:00
Tameside A635 Manchester Road
Timeseries Graph
n/mn/mn/mn/an/m 21/08/2026
06:00:00
Warrington
Timeseries Graph
n/mn/an/m6 (1 Low)8 (1 Low)
*1
23/08/2026
10:00:00
Widnes Milton Road
Timeseries Graph
n/m42 (1 Low)n/mn/mn/m 23/08/2026
02:00:00
Wigan Centre
Timeseries Graph
71 (3 Low)24 (1 Low)n/m11 (1 Low)16 (1 Low)
*2
23/08/2026
10:00:00
Wirral Tranmere
Timeseries Graph
75 (3 Low)9 (1 Low)n/m6 (1 Low)9 (1 Low)
*2
23/08/2026
10:00:00

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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/m43 (1 Low)n/mn/mn/a 22/08/2026
13:00:00
Ballymena Antrim Road
Timeseries Graph
n/m16 (1 Low)n/mn/mn/m 22/08/2026
12:00:00
Ballymena Ballykeel
Timeseries Graph
n/m14 (1 Low)5 (1 Low)n/mn/m 23/08/2026
02:30:00
Belfast Centre
Timeseries Graph
73 (3 Low)14 (1 Low)n/a6 (1 Low)9 (1 Low)
*2
21/08/2026
02:30:00
Belfast Stockman's Lane
Timeseries Graph
n/m43 (1 Low)n/mn/m12 (1 Low)
*1
22/08/2026
16:00:00
Derry Rosemount
Timeseries Graph
74 (3 Low)7 (1 Low)2 (1 Low)1 (1 Low)6 (1 Low)
*1
22/08/2026
20:00:00
Lough Navar
Timeseries Graph
65 (2 Low)n/mn/m3 (1 Low)5 (1 Low)
*2
23/08/2026
09:00:00

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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/m28 (1 Low)n/mn/mn/m 22/08/2026
13:00:00
Eskdalemuir
Timeseries Graph
71 (3 Low)2 (1 Low)n/mn/mn/m 22/08/2026
21:00:00
Peebles
Timeseries Graph
82 (3 Low)6 (1 Low)n/mn/mn/m 22/08/2026
20:00:00

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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/mn/mn/m5 (1 Low)n/m 23/08/2026
10:00:00
Brighton Preston Park
Timeseries Graph
88 (3 Low)37 (1 Low)n/m5 (1 Low)9 (1 Low)
*2
23/08/2026
10:00:00
Chatham Roadside
Timeseries Graph
n/mn/an/mn/an/a 19/08/2026
02:00:00
Chilbolton Observatory
Timeseries Graph
91 (3 Low)19 (1 Low)1 (1 Low)4 (1 Low)9 (1 Low)
*2
22/08/2026
23:30:00
Eastbourne
Timeseries Graph
89 (3 Low)20 (1 Low)n/m5 (1 Low)9 (1 Low)
*2
23/08/2026
10:00:00
Farnborough Cherrywood
Timeseries Graph
n/mn/mn/m16 (2 Low)21 (2 Low)
*2
23/08/2026
10:00:00
Horley
Timeseries Graph
n/m26 (1 Low)n/m6 (1 Low)11 (1 Low)
*2
23/08/2026
10:00:00
Lullington Heath
Timeseries Graph
98 (3 Low)5 (1 Low)1 (1 Low)4 (1 Low)4 (1 Low)
*2
23/08/2026
02:30:00
Maidstone Upper Stone Street
Timeseries Graph
n/mn/mn/m13 (2 Low)22 (2 Low)
*2
23/08/2026
10:00:00
Milton Keynes Civic Centre
Timeseries Graph
82 (3 Low)n/mn/m6 (1 Low)13 (1 Low)
*2
23/08/2026
10:00:00
Oxford Centre Roadside
Timeseries Graph
n/m63 (1 Low)n/mn/mn/m 22/08/2026
24:00:
Oxford St Ebbes
Timeseries Graph
83 (3 Low)62 (1 Low)n/m5 (1 Low)8 (1 Low)
*2
23/08/2026
10:00:00
Portsmouth
Timeseries Graph
93 (3 Low)32 (1 Low)n/m5 (1 Low)8 (1 Low)
*2
23/08/2026
10:00:00
Portsmouth Anglesea Road
Timeseries Graph
n/m30 (1 Low)n/m5 (1 Low)9 (1 Low)
*2
23/08/2026
10:00:00
Reading London Road
Timeseries Graph
n/m44 (1 Low)n/mn/m16 (1 Low)
*1
22/08/2026
22:00:00
Reading New Town
Timeseries Graph
85 (3 Low)26 (1 Low)n/m7 (1 Low)11 (1 Low)
*2
23/08/2026
10:00:00
Reading Rose Kiln Lane
Timeseries Graph
n/mn/mn/m5 (1 Low)n/m 23/08/2026
10:00:00
Rochester Stoke
Timeseries Graph
91 (3 Low)16 (1 Low)2 (1 Low)8 (1 Low)12 (1 Low)
*2
23/08/2026
09:15:00
Slough Windmill Bath Road
Timeseries Graph
n/mn/mn/m6 (1 Low)14 (1 Low)
*2
23/08/2026
10:00:00
Southampton A33
Timeseries Graph
n/m54 (1 Low)n/m4 (1 Low)8 (1 Low)
*2
23/08/2026
10:00:00
Southampton Centre
Timeseries Graph
86 (3 Low)55 (1 Low)2 (1 Low)6 (1 Low)10 (1 Low)
*2
22/08/2026
22:15:00
Storrington Roadside
Timeseries Graph
n/m25 (1 Low)n/m5 (1 Low)10 (1 Low)
*2
23/08/2026
10:00:00
Worthing A27 Roadside
Timeseries Graph
n/m25 (1 Low)n/m9 (1 Low)n/m 23/08/2026
09:00:00
Worthing East Ten Acres
Timeseries Graph
n/mn/mn/m5 (1 Low)9 (1 Low)
*2
23/08/2026
10:00:00

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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
n/a14 (1 Low)2 (1 Low)8 (1 Low)11 (1 Low)
*1
22/08/2026
11:45:00
Cardiff Newport Road
Timeseries Graph
n/m30 (1 Low)n/mn/m14 (1 Low)
*1
22/08/2026
22:00:00
Chepstow A48
Timeseries Graph
n/m29 (1 Low)n/m5 (1 Low)11 (1 Low)
*1
23/08/2026
10:00:00
Cwmbran Crownbridge
Timeseries Graph
86 (3 Low)7 (1 Low)n/mn/mn/m 22/08/2026
20:00:00
Hafod-yr-ynys Hill Roadside
Timeseries Graph
n/m33 (1 Low)n/mn/mn/m 22/08/2026
22:00:00
Narberth
Timeseries Graph
73 (3 Low)2 (1 Low)2 (1 Low)4 (1 Low)24 (2 Low)
*2
22/08/2026
17:45:00
Newport
Timeseries Graph
n/m18 (1 Low)n/m5 (1 Low)9 (1 Low)
*2
23/08/2026
10:00:00
Port Talbot Margam
Timeseries Graph
77 (3 Low)25 (1 Low)2 (1 Low)6 (1 Low)12 (1 Low)
*3
22/08/2026
11:00:00
Swansea Roadside
Timeseries Graph
n/m21 (1 Low)n/m9 (1 Low)10 (1 Low)
*1
23/08/2026
10:00:00

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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/mn/mn/m4 (1 Low)7 (1 Low)
*2
23/08/2026
10:00:00
Bath A4 Roadside
Timeseries Graph
n/m31 (1 Low)n/mn/mn/m 22/08/2026
23:00:00
Bournemouth
Timeseries Graph
96 (3 Low)25 (1 Low)n/m7 (1 Low)n/m 23/08/2026
10:00:00
Bournemouth Bourne Valley
Timeseries Graph
n/mn/mn/m4 (1 Low)8 (1 Low)
*2
23/08/2026
10:00:00
Bridgwater A372 Westonzoyland
Timeseries Graph
n/mn/mn/m5 (1 Low)n/m 23/08/2026
10:00:00
Bristol Patchway
Timeseries Graph
n/mn/mn/m5 (1 Low)7 (1 Low)
*2
23/08/2026
10:00:00
Bristol St Paul's
Timeseries Graph
80 (3 Low)19 (1 Low)n/m7 (1 Low)13 (1 Low)
*1
23/08/2026
10:00:00
Bristol Temple Way
Timeseries Graph
n/m26 (1 Low)n/m6 (1 Low)11 (1 Low)
*2
23/08/2026
10:00:00
Charlton Mackrell
Timeseries Graph
86 (3 Low)8 (1 Low)n/m4 (1 Low)8 (1 Low)
*2
23/08/2026
10:00:00
Cheltenham A40 Gloucester Road
Timeseries Graph
n/mn/mn/m6 (1 Low)n/m 23/08/2026
10:00:00
Christchurch Barrack Road
Timeseries Graph
n/m34 (1 Low)n/m6 (1 Low)n/m 23/08/2026
09:00:00
Exeter Roadside
Timeseries Graph
65 (2 Low)43 (1 Low)n/mn/mn/m 22/08/2026
21:00:00
Gloucester Tredworth
Timeseries Graph
n/mn/mn/m6 (1 Low)10 (1 Low)
*2
23/08/2026
10:00:00
Honiton
Timeseries Graph
81 (3 Low)10 (1 Low)n/m3 (1 Low)6 (1 Low)
*2
23/08/2026
10:00:00
Plymouth Centre
Timeseries Graph
72 (3 Low)21 (1 Low)n/m4 (1 Low)8 (1 Low)
*2
23/08/2026
10:00:00
Plymouth Tavistock Road
Timeseries Graph
n/m37 (1 Low)n/mn/mn/m 23/08/2026
08:00:00
Saltash Callington Road
Timeseries Graph
n/mn/mn/m1 (1 Low)10 (1 Low)
*1
23/08/2026
01:00:00
Swindon Walcot
Timeseries Graph
81 (3 Low)30 (1 Low)n/m4 (1 Low)8 (1 Low)
*2
23/08/2026
10:00:00
Yarner Wood
Timeseries Graph
n/an/an/m3 (1 Low)5 (1 Low)
*2
23/08/2026
10:00:00

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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
75 (3 Low)n/mn/mn/mn/m 22/08/2026
13:00:00

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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
Bedworth Collycroft
Timeseries Graph
n/mn/mn/m7 (1 Low)10 (1 Low)
*2
23/08/2026
10:00:00
Birmingham A4540 Roadside
Timeseries Graph
66 (2 Low)40 (1 Low)n/m7 (1 Low)11 (1 Low)
*2
23/08/2026
10:00:00
Birmingham Hall Green
Timeseries Graph
84 (3 Low)25 (1 Low)n/m7 (1 Low)10 (1 Low)
*2
23/08/2026
10:00:00
Birmingham Ladywood
Timeseries Graph
67 (3 Low)20 (1 Low)3 (1 Low)7 (1 Low)10 (1 Low)
*2
22/08/2026
14:15:00
Birmingham University
Timeseries Graph
n/mn/mn/m6 (1 Low)9 (1 Low)
*2
23/08/2026
10:00:00
Burton-on-Trent Horninglow
Timeseries Graph
75 (3 Low)15 (1 Low)n/m7 (1 Low)10 (1 Low)
*2
23/08/2026
10:00:00
Cannock A5190 Roadside
Timeseries Graph
n/m21 (1 Low)n/m7 (1 Low)n/m 23/08/2026
10:00:00
Coventry Allesley
Timeseries Graph
80 (3 Low)27 (1 Low)n/m6 (1 Low)10 (1 Low)
*2
23/08/2026
10:00:00
Coventry Binley Road
Timeseries Graph
n/m29 (1 Low)n/m7 (1 Low)11 (1 Low)
*2
23/08/2026
10:00:00
Leamington Spa
Timeseries Graph
90 (3 Low)19 (1 Low)n/m7 (1 Low)11 (1 Low)
*2
23/08/2026
10:00:00
Leamington Spa Rugby Road
Timeseries Graph
n/m24 (1 Low)n/m6 (1 Low)9 (1 Low)
*2
23/08/2026
10:00:00
Leominster
Timeseries Graph
77 (3 Low)7 (1 Low)n/mn/mn/m 22/08/2026
21:00:00
Oldbury Birmingham Road
Timeseries Graph
n/m32 (1 Low)n/m8 (1 Low)12 (1 Low)
*2
23/08/2026
10:00:00
Shrewsbury Underdale
Timeseries Graph
n/mn/mn/m7 (1 Low)11 (1 Low)
*2
23/08/2026
10:00:00
Stoke-on-Trent A50 Roadside
Timeseries Graph
n/m40 (1 Low)n/m7 (1 Low)11 (1 Low)
*2
23/08/2026
10:00:00
Stoke-on-Trent Centre
Timeseries Graph
60 (2 Low)28 (1 Low)n/m8 (1 Low)12 (1 Low)
*2
23/08/2026
10:00:00
Telford Hollinswood
Timeseries Graph
89 (3 Low)15 (1 Low)n/m6 (1 Low)9 (1 Low)
*2
23/08/2026
10:00:00
Walsall Caldmore
Timeseries Graph
n/mn/mn/m8 (1 Low)11 (1 Low)
*2
23/08/2026
10:00:00
Walsall Woodlands
Timeseries Graph
78 (3 Low)17 (1 Low)n/mn/mn/m 22/08/2026
20:00:00
West Bromwich Kenrick Park
Timeseries Graph
71 (3 Low)19 (1 Low)n/mn/mn/m 22/08/2026
21:00:00
Wolverhampton East Park
Timeseries Graph
n/mn/mn/m7 (1 Low)10 (1 Low)
*2
23/08/2026
10:00:00
Worcester Tolladine
Timeseries Graph
n/mn/mn/m6 (1 Low)9 (1 Low)
*2
23/08/2026
10:00:00

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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
72 (3 Low)20 (1 Low)2 (1 Low)n/an/a 22/08/2026
11:15:00
Bradford Mayo Avenue
Timeseries Graph
n/m54 (1 Low)n/mn/mn/m 22/08/2026
24:00:
Bradford Shipley Airedale Road
Timeseries Graph
n/mn/mn/m9 (1 Low)13 (1 Low)
*2
23/08/2026
10:00:00
Bradford West Park
Timeseries Graph
n/mn/mn/m10 (1 Low)15 (1 Low)
*2
23/08/2026
10:00:00
Dewsbury Ashworth Grange
Timeseries Graph
76 (3 Low)24 (1 Low)n/m8 (1 Low)12 (1 Low)
*2
23/08/2026
10:00:00
Doncaster A630 Cleveland Street
Timeseries Graph
n/m41 (1 Low)n/m9 (1 Low)n/m 23/08/2026
10:00:00
Harrogate Woodlands
Timeseries Graph
n/mn/mn/m9 (1 Low)13 (1 Low)
*2
23/08/2026
10:00:00
High Muffles
Timeseries Graph
74 (3 Low)4 (1 Low)n/m10 (1 Low)13 (1 Low)
*2
23/08/2026
10:00:00
Hull Freetown
Timeseries Graph
78 (3 Low)39 (1 Low)1 (1 Low)12 (2 Low)17 (2 Low)
*2
23/08/2026
07:15:00
Hull Holderness Road
Timeseries Graph
n/m29 (1 Low)n/m15 (2 Low)20 (2 Low)
*2
23/08/2026
10:00:00
Immingham Woodlands Avenue
Timeseries Graph
73 (3 Low)19 (1 Low)n/m11 (1 Low)18 (2 Low)
*2
23/08/2026
10:00:00
Leeds Centre
Timeseries Graph
72 (3 Low)29 (1 Low)3 (1 Low)9 (1 Low)13 (1 Low)
*2
22/08/2026
23:30:00
Leeds Headingley Kerbside
Timeseries Graph
n/mn/an/m10 (1 Low)18 (2 Low)
*1
23/08/2026
10:00:00
Rotherham East Dene
Timeseries Graph
n/mn/mn/m19 (2 Low)26 (2 Low)
*2
23/08/2026
10:00:00
Scunthorpe Town
Timeseries Graph
n/m20 (1 Low)3 (1 Low)11 (1 Low)14 (1 Low)
*1
22/08/2026
18:30:00
Sheffield Barnsley Road
Timeseries Graph
n/m43 (1 Low)n/m7 (1 Low)n/m 23/08/2026
10:00:00
Sheffield Devonshire Green
Timeseries Graph
71 (3 Low)23 (1 Low)n/m8 (1 Low)11 (1 Low)
*2
23/08/2026
10:00:00
Sheffield Tinsley
Timeseries Graph
70 (3 Low)38 (1 Low)n/m7 (1 Low)12 (1 Low)
*2
23/08/2026
10:00:00
Wakefield Alverthorpe
Timeseries Graph
n/mn/mn/m8 (1 Low)11 (1 Low)
*2
23/08/2026
10:00:00
York Bootham
Timeseries Graph
68 (3 Low)15 (1 Low)n/m10 (1 Low)16 (1 Low)
*1
23/08/2026
10:00:00
York Fishergate
Timeseries Graph
n/m19 (1 Low)n/m8 (1 Low)18 (2 Low)
*1
23/08/2026
10:00:00

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