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 11pm Fri 18th Jul 2025

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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
66 (2 Low)n/mn/m4 (1 Low)7 (1 Low)
*2
18/07/2025
01:00:00
Bush Estate
Timeseries Graph
83 (3 Low)3 (1 Low)n/mn/mn/m 17/07/2025
20:00:00
Dumbarton Roadside
Timeseries Graph
n/m12 (1 Low)n/mn/mn/m 18/07/2025
09:00:00
Edinburgh Nicolson Street
Timeseries Graph
n/mn/an/mn/mn/m 16/07/2025
08:00:00
Edinburgh St Leonards
Timeseries Graph
48 (2 Low)10 (1 Low)1 (1 Low)5 (1 Low)10 (1 Low)
*2
18/07/2025
02:30:00
Glasgow Great Western Road
Timeseries Graph
n/m20 (1 Low)n/mn/mn/m 17/07/2025
24:00:
Glasgow High Street
Timeseries Graph
n/m13 (1 Low)n/m5 (1 Low)9 (1 Low)
*2
18/07/2025
01:00:00
Glasgow Kerbside
Timeseries Graph
n/m38 (1 Low)n/mn/mn/m 18/07/2025
09:00:00
Glasgow Townhead
Timeseries Graph
63 (2 Low)15 (1 Low)n/m5 (1 Low)10 (1 Low)
*2
18/07/2025
01:00:00
Grangemouth
Timeseries Graph
n/m18 (1 Low)2 (1 Low)4 (1 Low)10 (1 Low)
*1
18/07/2025
02:30:00
Grangemouth Moray
Timeseries Graph
n/m9 (1 Low)n/mn/mn/m 18/07/2025
02:00:00
Greenock A8 Roadside
Timeseries Graph
n/m34 (1 Low)n/m5 (1 Low)9 (1 Low)
*2
18/07/2025
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
72 (3 Low)9 (1 Low)n/m4 (1 Low)8 (1 Low)
*2
18/07/2025
01:00:00
Chesterfield Roadside
Timeseries Graph
n/m18 (1 Low)n/m5 (1 Low)9 (1 Low)
*2
18/07/2025
01:00:00
Derby St Alkmund's Way
Timeseries Graph
n/m37 (1 Low)n/m4 (1 Low)n/m 18/07/2025
01:00:00
Derby Stockbrook Park
Timeseries Graph
71 (3 Low)n/mn/m4 (1 Low)6 (1 Low)
*2
18/07/2025
01:00:00
Ladybower
Timeseries Graph
66 (2 Low)9 (1 Low)2 (1 Low)5 (1 Low)7 (1 Low)
*2
18/07/2025
20:15:00
Leicester A594 Roadside
Timeseries Graph
n/m39 (1 Low)n/m4 (1 Low)8 (1 Low)
*2
18/07/2025
01:00:00
Leicester University
Timeseries Graph
73 (3 Low)26 (1 Low)n/m3 (1 Low)6 (1 Low)
*2
18/07/2025
01:00:00
Lincoln Canwick Road
Timeseries Graph
n/m34 (1 Low)n/mn/mn/m 18/07/2025
08:00:00
Loughborough Thorpe Acre
Timeseries Graph
n/mn/mn/m4 (1 Low)7 (1 Low)
*2
18/07/2025
01:00:00
Mansfield Ladybrook
Timeseries Graph
n/mn/mn/m5 (1 Low)8 (1 Low)
*2
18/07/2025
04:00:00
Northampton Spring Park
Timeseries Graph
66 (2 Low)22 (1 Low)n/m5 (1 Low)n/m 18/07/2025
01:00:00
Nottingham Bilborough
Timeseries Graph
n/mn/mn/m4 (1 Low)7 (1 Low)
*2
18/07/2025
01:00:00
Nottingham Kenmore Gardens
Timeseries Graph
82 (3 Low)19 (1 Low)2 (1 Low)5 (1 Low)8 (1 Low)
*2
18/07/2025
12:00:00
Nottingham Western Boulevard
Timeseries Graph
n/m42 (1 Low)n/m5 (1 Low)10 (1 Low)
*2
18/07/2025
01:00:00
Tallington
Timeseries Graph
90 (3 Low)n/mn/m4 (1 Low)13 (1 Low)
*2
18/07/2025
07:00:00
Toft Newton
Timeseries Graph
101 (4 Moderate)17 (1 Low)n/m6 (1 Low)15 (1 Low)
*2
18/07/2025
23:00:00

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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/m24 (1 Low)n/m5 (1 Low)9 (1 Low)
*2
18/07/2025
23:00:00
Cambridge Roadside
Timeseries Graph
n/m38 (1 Low)n/mn/mn/m 18/07/2025
19:00:00
Luton A505 Roadside
Timeseries Graph
n/m61 (1 Low)n/m4 (1 Low)n/m 18/07/2025
01:00:00
Norwich Lakenfields
Timeseries Graph
83 (3 Low)17 (1 Low)n/m7 (1 Low)11 (1 Low)
*2
18/07/2025
10:00:00
Peterborough Garton End
Timeseries Graph
n/mn/mn/m5 (1 Low)10 (1 Low)
*2
18/07/2025
02:00:00
Sibton
Timeseries Graph
71 (3 Low)n/mn/m6 (1 Low)9 (1 Low)
*2
18/07/2025
05:00:00
Southend Shoeburyness
Timeseries Graph
n/mn/mn/m5 (1 Low)10 (1 Low)
*2
18/07/2025
01:00:00
Southend-on-Sea
Timeseries Graph
71 (3 Low)15 (1 Low)n/m5 (1 Low)10 (1 Low)
*2
18/07/2025
01:00:00
St Osyth
Timeseries Graph
60 (2 Low)13 (1 Low)n/m5 (1 Low)12 (1 Low)
*2
18/07/2025
07:00:00
Stanford-le-Hope Roadside
Timeseries Graph
n/m30 (1 Low)n/m9 (1 Low)12 (1 Low)
*1
18/07/2025
01:00:00
Thurrock
Timeseries Graph
79 (3 Low)23 (1 Low)3 (1 Low)6 (1 Low)14 (1 Low)
*2
18/07/2025
03:30:00
Weybourne
Timeseries Graph
83 (3 Low)n/mn/m7 (1 Low)12 (1 Low)
*2
18/07/2025
18:00:00
Wicken Fen
Timeseries Graph
97 (3 Low)6 (1 Low)1 (1 Low)5 (1 Low)11 (1 Low)
*2
18/07/2025
20:00:00

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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/m40 (1 Low)n/m5 (1 Low)n/a 18/07/2025
23:00:00
Ealing Horn Lane
Timeseries Graph
n/mn/mn/mn/m29 (2 Low)
*1
18/07/2025
23:00:00
Haringey Roadside
Timeseries Graph
n/mn/an/mn/mn/m 15/07/2025
20:00:00
London Bexley
Timeseries Graph
n/m17 (1 Low)n/m5 (1 Low)10 (1 Low)
*2
18/07/2025
23:00:00
London Bloomsbury
Timeseries Graph
93 (3 Low)13 (1 Low)3 (1 Low)6 (1 Low)12 (1 Low)
*2
18/07/2025
14:45:00
London Haringey Priory Park South
Timeseries Graph
n/a10 (1 Low)n/m5 (1 Low)12 (1 Low)
*2
18/07/2025
23:00:00
London Harlington
Timeseries Graph
94 (3 Low)39 (1 Low)n/m5 (1 Low)8 (1 Low)
*2
18/07/2025
22:00:00
London Hillingdon
Timeseries Graph
63 (2 Low)72 (2 Low)n/m6 (1 Low)18 (2 Low)
*2
18/07/2025
23:00:00
London Honor Oak Park
Timeseries Graph
96 (3 Low)n/mn/m5 (1 Low)9 (1 Low)
*2
18/07/2025
23:00:00
London Marylebone Road
Timeseries Graph
45 (2 Low)44 (1 Low)7 (1 Low)n/an/a 18/07/2025
11:00:00
London N. Kensington
Timeseries Graph
96 (3 Low)9 (1 Low)1 (1 Low)5 (1 Low)9 (1 Low)
*2
18/07/2025
15:45:00
London Norbury Manor School
Timeseries Graph
n/mn/mn/m5 (1 Low)9 (1 Low)
*2
18/07/2025
23:00:00
London Teddington Bushy Park
Timeseries Graph
n/mn/mn/m6 (1 Low)12 (1 Low)
*2
18/07/2025
23:00:00
London Westminster
Timeseries Graph
68 (3 Low)9 (1 Low)n/m4 (1 Low)n/m 18/07/2025
01:00:00
Southwark A2 Old Kent Road
Timeseries Graph
n/m18 (1 Low)n/mn/m14 (1 Low)
*1
18/07/2025
23:00:00

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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
57 (2 Low)8 (1 Low)n/mn/mn/m 17/07/2025
24:00:
Inverness
Timeseries Graph
n/m13 (1 Low)n/m6 (1 Low)12 (1 Low)
*2
18/07/2025
01:00:00
Lerwick
Timeseries Graph
84 (3 Low)n/mn/mn/mn/m 17/07/2025
24:00:
Strathvaich
Timeseries Graph
75 (3 Low)n/mn/mn/mn/m 17/07/2025
24:00:

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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
Hartlepool St Abbs Walk
Timeseries Graph
73 (3 Low)24 (1 Low)n/m10 (1 Low)16 (1 Low)
*2
18/07/2025
23:00:00
Kielder Water
Timeseries Graph
51 (2 Low)n/mn/m4 (1 Low)8 (1 Low)
*2
18/07/2025
06:00:00
Middlesbrough
Timeseries Graph
69 (3 Low)28 (1 Low)2 (1 Low)5 (1 Low)16 (1 Low)
*1
18/07/2025
21:45:00
Newcastle Centre
Timeseries Graph
63 (2 Low)27 (1 Low)n/m9 (1 Low)17 (2 Low)
*1
18/07/2025
01:00:00
Newcastle Cradlewell Roadside
Timeseries Graph
n/m40 (1 Low)n/m6 (1 Low)12 (1 Low)
*2
18/07/2025
01:00:00
Stockton-on-Tees A1305 Roadside
Timeseries Graph
n/m40 (1 Low)n/m7 (1 Low)n/m 18/07/2025
11:00:00
Stockton-on-Tees Eaglescliffe
Timeseries Graph
n/mn/an/m7 (1 Low)16 (1 Low)
*1
18/07/2025
07:00:00
Sunderland Silksworth
Timeseries Graph
58 (2 Low)21 (1 Low)n/m7 (1 Low)13 (1 Low)
*2
18/07/2025
01:00:00
Sunderland Wessington Way
Timeseries Graph
n/m27 (1 Low)n/m7 (1 Low)n/m 18/07/2025
01:00:00

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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
69 (3 Low)23 (1 Low)n/m6 (1 Low)12 (1 Low)
*2
18/07/2025
08:00:00
Aberdeen Wellington Road
Timeseries Graph
n/m15 (1 Low)n/mn/mn/m 18/07/2025
23:00:00
Dundee Mains Loan
Timeseries Graph
n/m13 (1 Low)n/mn/mn/m 18/07/2025
05:00:00
Perth Glasgow Road
Timeseries Graph
n/m17 (1 Low)n/mn/mn/m 18/07/2025
22:00:00

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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
63 (2 Low)3 (1 Low)n/mn/mn/m 18/07/2025
21:00:00
Wrexham
Timeseries Graph
n/m19 (1 Low)2 (1 Low)3 (1 Low)5 (1 Low)
*2
17/07/2025
23:15:00

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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/m14 (1 Low)n/m4 (1 Low)n/m 18/07/2025
01:00:00
Blackburn Accrington Road
Timeseries Graph
n/m23 (1 Low)n/mn/mn/m 18/07/2025
23:00:00
Blackburn Audley Park
Timeseries Graph
52 (2 Low)n/mn/m7 (1 Low)11 (1 Low)
*2
18/07/2025
02:00:00
Blackpool Marton
Timeseries Graph
64 (2 Low)13 (1 Low)n/m5 (1 Low)8 (1 Low)
*2
18/07/2025
01:00:00
Blackpool Whitegate Drive
Timeseries Graph
n/mn/mn/m5 (1 Low)n/m 18/07/2025
01:00:00
Bury Whitefield Roadside
Timeseries Graph
n/m21 (1 Low)n/mn/mn/a 18/07/2025
22:00:00
Carlisle Morton A595
Timeseries Graph
n/m16 (1 Low)n/m7 (1 Low)10 (1 Low)
*1
18/07/2025
01:00:00
Crewe Coppenhall
Timeseries Graph
55 (2 Low)23 (1 Low)n/m4 (1 Low)7 (1 Low)
*2
18/07/2025
01:00:00
Glazebury
Timeseries Graph
53 (2 Low)10 (1 Low)n/m6 (1 Low)10 (1 Low)
*2
18/07/2025
03:00:00
Liverpool Speke
Timeseries Graph
62 (2 Low)16 (1 Low)16 (1 Low)6 (1 Low)9 (1 Low)
*1
18/07/2025
09:15:00
Liverpool Thirlmere Park
Timeseries Graph
60 (2 Low)n/mn/m5 (1 Low)8 (1 Low)
*2
18/07/2025
01:00:00
Manchester Piccadilly
Timeseries Graph
56 (2 Low)39 (1 Low)5 (1 Low)8 (1 Low)15 (1 Low)
*2
18/07/2025
15:30:00
Manchester Sharston
Timeseries Graph
54 (2 Low)29 (1 Low)n/m4 (1 Low)8 (1 Low)
*2
18/07/2025
01:00:00
Middlewich St Michael's Way
Timeseries Graph
n/mn/mn/m4 (1 Low)n/m 18/07/2025
01:00:00
Preston
Timeseries Graph
51 (2 Low)26 (1 Low)n/m7 (1 Low)11 (1 Low)
*2
18/07/2025
03:00:00
Salford Eccles
Timeseries Graph
58 (2 Low)34 (1 Low)n/m9 (1 Low)16 (1 Low)
*2
18/07/2025
03:00:00
Shaw Crompton Way
Timeseries Graph
n/m31 (1 Low)n/mn/mn/m 17/07/2025
24:00:
St Helens Linkway
Timeseries Graph
n/mn/an/mn/m10 (1 Low)
*1
10/07/2025
07:00:00
Tameside A635 Manchester Road
Timeseries Graph
n/mn/mn/mn/an/m 17/07/2025
01:00:00
Warrington
Timeseries Graph
n/m20 (1 Low)n/m2 (1 Low)8 (1 Low)
*1
18/07/2025
01:00:00
Widnes Milton Road
Timeseries Graph
n/m31 (1 Low)n/mn/mn/m 18/07/2025
18:00:00
Wigan Centre
Timeseries Graph
60 (2 Low)23 (1 Low)n/m6 (1 Low)11 (1 Low)
*2
18/07/2025
03:00:00
Wirral Tranmere
Timeseries Graph
61 (2 Low)9 (1 Low)n/m4 (1 Low)6 (1 Low)
*2
18/07/2025
01:00:00

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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/m31 (1 Low)n/mn/m10 (1 Low)
*1
18/07/2025
16:00:00
Ballymena Antrim Road
Timeseries Graph
n/m24 (1 Low)n/mn/mn/m 18/07/2025
08:00:00
Ballymena Ballykeel
Timeseries Graph
n/m11 (1 Low)4 (1 Low)n/mn/m 18/07/2025
17:45:00
Belfast Centre
Timeseries Graph
35 (2 Low)25 (1 Low)2 (1 Low)3 (1 Low)5 (1 Low)
*2
18/07/2025
07:00:00
Belfast Stockman's Lane
Timeseries Graph
n/m54 (1 Low)n/mn/m13 (1 Low)
*1
18/07/2025
08:00:00
Derry Rosemount
Timeseries Graph
46 (2 Low)7 (1 Low)2 (1 Low)1 (1 Low)4 (1 Low)
*1
18/07/2025
02:30:00
Lough Navar
Timeseries Graph
41 (2 Low)n/mn/m3 (1 Low)5 (1 Low)
*2
18/07/2025
01:00:00

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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/m20 (1 Low)n/mn/mn/m 18/07/2025
09:00:00
Eskdalemuir
Timeseries Graph
61 (2 Low)1 (1 Low)n/mn/mn/m 18/07/2025
21:00:00
Peebles
Timeseries Graph
71 (3 Low)3 (1 Low)n/mn/mn/m 17/07/2025
24:00:

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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
Brighton Preston Park
Timeseries Graph
48 (2 Low)11 (1 Low)n/m5 (1 Low)8 (1 Low)
*2
18/07/2025
01:00:00
Chatham Roadside
Timeseries Graph
n/m49 (1 Low)n/m3 (1 Low)14 (1 Low)
*1
18/07/2025
01:00:00
Chilbolton Observatory
Timeseries Graph
65 (2 Low)8 (1 Low)2 (1 Low)5 (1 Low)19 (2 Low)
*2
18/07/2025
21:15:00
Eastbourne
Timeseries Graph
60 (2 Low)20 (1 Low)n/m3 (1 Low)5 (1 Low)
*2
18/07/2025
01:00:00
Farnborough Cherrywood
Timeseries Graph
n/mn/mn/m4 (1 Low)7 (1 Low)
*2
18/07/2025
23:00:00
Horley
Timeseries Graph
n/m31 (1 Low)n/m5 (1 Low)9 (1 Low)
*2
18/07/2025
23:00:00
Lullington Heath
Timeseries Graph
61 (2 Low)21 (1 Low)1 (1 Low)4 (1 Low)5 (1 Low)
*2
18/07/2025
02:30:00
Maidstone Upper Stone Street
Timeseries Graph
n/mn/mn/m5 (1 Low)9 (1 Low)
*2
18/07/2025
01:00:00
Milton Keynes Civic Centre
Timeseries Graph
74 (3 Low)n/mn/m3 (1 Low)7 (1 Low)
*2
18/07/2025
01:00:00
Oxford Centre Roadside
Timeseries Graph
n/m41 (1 Low)n/mn/mn/m 18/07/2025
22:00:00
Oxford St Ebbes
Timeseries Graph
62 (2 Low)38 (1 Low)n/m3 (1 Low)5 (1 Low)
*2
18/07/2025
23:00:00
Portsmouth
Timeseries Graph
60 (2 Low)21 (1 Low)n/m5 (1 Low)9 (1 Low)
*2
18/07/2025
18:00:00
Portsmouth Anglesea Road
Timeseries Graph
n/m31 (1 Low)n/m4 (1 Low)7 (1 Low)
*2
18/07/2025
19:00:00
Reading London Road
Timeseries Graph
n/m23 (1 Low)n/mn/m15 (1 Low)
*1
18/07/2025
16:00:00
Reading New Town
Timeseries Graph
65 (2 Low)17 (1 Low)n/m3 (1 Low)7 (1 Low)
*2
18/07/2025
23:00:00
Reading Rose Kiln Lane
Timeseries Graph
n/mn/mn/m3 (1 Low)n/m 18/07/2025
23:00:00
Rochester Stoke
Timeseries Graph
70 (3 Low)13 (1 Low)2 (1 Low)6 (1 Low)14 (1 Low)
*2
18/07/2025
08:15:00
Slough Windmill Bath Road
Timeseries Graph
n/mn/mn/m5 (1 Low)13 (1 Low)
*2
18/07/2025
23:00:00
Southampton A33
Timeseries Graph
n/m33 (1 Low)n/m6 (1 Low)10 (1 Low)
*2
18/07/2025
11:00:00
Southampton Centre
Timeseries Graph
56 (2 Low)30 (1 Low)2 (1 Low)5 (1 Low)12 (1 Low)
*2
18/07/2025
09:00:00
Storrington Roadside
Timeseries Graph
n/m23 (1 Low)n/m5 (1 Low)10 (1 Low)
*2
18/07/2025
23:00:00
Worthing A27 Roadside
Timeseries Graph
n/m29 (1 Low)n/m6 (1 Low)n/m 18/07/2025
01:00:00
Worthing East Ten Acres
Timeseries Graph
n/mn/mn/m5 (1 Low)8 (1 Low)
*2
18/07/2025
01:00:00

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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
55 (2 Low)20 (1 Low)2 (1 Low)10 (1 Low)11 (1 Low)
*1
18/07/2025
02:30:00
Cardiff Newport Road
Timeseries Graph
n/m15 (1 Low)n/mn/m7 (1 Low)
*1
18/07/2025
01:00:00
Chepstow A48
Timeseries Graph
n/m36 (1 Low)n/m3 (1 Low)8 (1 Low)
*1
18/07/2025
10:00:00
Cwmbran Crownbridge
Timeseries Graph
63 (2 Low)11 (1 Low)n/mn/mn/m 18/07/2025
21:00:00
Hafod-yr-ynys Hill Roadside
Timeseries Graph
n/m37 (1 Low)n/mn/mn/m 18/07/2025
09:00:00
Narberth
Timeseries Graph
47 (2 Low)2 (1 Low)2 (1 Low)4 (1 Low)8 (1 Low)
*2
18/07/2025
10:15:00
Newport
Timeseries Graph
n/m14 (1 Low)n/m3 (1 Low)8 (1 Low)
*2
18/07/2025
23:00:00
Port Talbot Margam
Timeseries Graph
60 (2 Low)17 (1 Low)1 (1 Low)4 (1 Low)9 (1 Low)
*3
18/07/2025
19:15:00
Swansea Roadside
Timeseries Graph
n/m25 (1 Low)n/m6 (1 Low)10 (1 Low)
*1
18/07/2025
17:00:00

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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)8 (1 Low)
*2
18/07/2025
23:00:00
Bath A4 Roadside
Timeseries Graph
n/m45 (1 Low)n/mn/mn/m 18/07/2025
17:00:00
Bournemouth
Timeseries Graph
60 (2 Low)10 (1 Low)n/m5 (1 Low)n/m 18/07/2025
17:00:00
Bristol St Paul's
Timeseries Graph
55 (2 Low)14 (1 Low)n/mn/an/a 18/07/2025
01:00:00
Bristol Temple Way
Timeseries Graph
n/m18 (1 Low)n/m3 (1 Low)7 (1 Low)
*2
18/07/2025
22:00:00
Charlton Mackrell
Timeseries Graph
59 (2 Low)14 (1 Low)n/m4 (1 Low)10 (1 Low)
*2
18/07/2025
20:00:00
Cheltenham A40 Gloucester Road
Timeseries Graph
n/mn/mn/mn/an/m 15/07/2025
01:00:00
Christchurch Barrack Road
Timeseries Graph
n/m12 (1 Low)n/m2 (1 Low)n/m 18/07/2025
11:00:00
Exeter Roadside
Timeseries Graph
45 (2 Low)24 (1 Low)n/mn/mn/m 18/07/2025
22:00:00
Gloucester Tredworth
Timeseries Graph
n/mn/mn/m3 (1 Low)6 (1 Low)
*2
18/07/2025
16:00:00
Honiton
Timeseries Graph
53 (2 Low)11 (1 Low)n/m4 (1 Low)7 (1 Low)
*2
18/07/2025
19:00:00
London Farringdon Street
Timeseries Graph
n/m45 (1 Low)n/m7 (1 Low)n/m 18/07/2025
23:00:00
Plymouth Centre
Timeseries Graph
60 (2 Low)17 (1 Low)n/m6 (1 Low)11 (1 Low)
*2
18/07/2025
01:00:00
Plymouth Tavistock Road
Timeseries Graph
n/m22 (1 Low)n/mn/mn/m 18/07/2025
21:00:00
Saltash Callington Road
Timeseries Graph
n/mn/mn/m2 (1 Low)9 (1 Low)
*1
18/07/2025
15:00:00
Swindon Walcot
Timeseries Graph
50 (2 Low)4 (1 Low)n/m3 (1 Low)7 (1 Low)
*2
18/07/2025
23:00:00
Yarner Wood
Timeseries Graph
55 (2 Low)7 (1 Low)n/m3 (1 Low)6 (1 Low)
*2
18/07/2025
23:00:00

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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
68 (3 Low)n/mn/mn/mn/m 18/07/2025
18:00:00

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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
Birmingham A4540 Roadside
Timeseries Graph
47 (2 Low)48 (1 Low)n/m4 (1 Low)9 (1 Low)
*2
18/07/2025
01:00:00
Birmingham Hall Green
Timeseries Graph
70 (3 Low)11 (1 Low)n/m3 (1 Low)6 (1 Low)
*2
18/07/2025
23:00:00
Birmingham Ladywood
Timeseries Graph
60 (2 Low)19 (1 Low)2 (1 Low)n/an/a 18/07/2025
01:00:00
Burton-on-Trent Horninglow
Timeseries Graph
74 (3 Low)19 (1 Low)n/m3 (1 Low)7 (1 Low)
*2
18/07/2025
01:00:00
Cannock A5190 Roadside
Timeseries Graph
n/m15 (1 Low)n/m4 (1 Low)n/m 18/07/2025
01:00:00
Coventry Allesley
Timeseries Graph
61 (2 Low)18 (1 Low)n/m3 (1 Low)7 (1 Low)
*2
18/07/2025
01:00:00
Coventry Binley Road
Timeseries Graph
n/m30 (1 Low)n/m4 (1 Low)8 (1 Low)
*2
18/07/2025
01:00:00
Leamington Spa
Timeseries Graph
67 (3 Low)29 (1 Low)n/m3 (1 Low)7 (1 Low)
*2
18/07/2025
23:00:00
Leamington Spa Rugby Road
Timeseries Graph
n/m15 (1 Low)n/m3 (1 Low)6 (1 Low)
*2
18/07/2025
23:00:00
Leominster
Timeseries Graph
61 (2 Low)10 (1 Low)n/mn/mn/m 18/07/2025
22:00:00
Oldbury Birmingham Road
Timeseries Graph
n/m32 (1 Low)n/m4 (1 Low)8 (1 Low)
*2
18/07/2025
01:00:00
Shrewsbury Underdale
Timeseries Graph
n/mn/mn/m3 (1 Low)6 (1 Low)
*2
18/07/2025
01:00:00
Stoke-on-Trent A50 Roadside
Timeseries Graph
n/m45 (1 Low)n/m5 (1 Low)9 (1 Low)
*2
18/07/2025
01:00:00
Stoke-on-Trent Centre
Timeseries Graph
44 (2 Low)23 (1 Low)n/m4 (1 Low)7 (1 Low)
*2
18/07/2025
01:00:00
Telford Hollinswood
Timeseries Graph
64 (2 Low)12 (1 Low)n/m3 (1 Low)5 (1 Low)
*2
18/07/2025
01:00:00
Walsall Woodlands
Timeseries Graph
69 (3 Low)15 (1 Low)n/mn/mn/m 18/07/2025
21:00:00
West Bromwich Kenrick Park
Timeseries Graph
60 (2 Low)n/an/mn/mn/m 18/07/2025
21:00:00
Worcester Tolladine
Timeseries Graph
n/mn/mn/m3 (1 Low)5 (1 Low)
*2
18/07/2025
23:00:00

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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
59 (2 Low)28 (1 Low)2 (1 Low)6 (1 Low)11 (1 Low)
*2
18/07/2025
18:30:00
Bradford Mayo Avenue
Timeseries Graph
n/m50 (1 Low)n/mn/mn/m 17/07/2025
23:00:00
Bradford Shipley Airedale Road
Timeseries Graph
n/mn/mn/m9 (1 Low)15 (1 Low)
*2
18/07/2025
06:00:00
Dewsbury Ashworth Grange
Timeseries Graph
59 (2 Low)19 (1 Low)n/m8 (1 Low)12 (1 Low)
*2
18/07/2025
06:00:00
Doncaster A630 Cleveland Street
Timeseries Graph
n/m44 (1 Low)n/m7 (1 Low)n/m 18/07/2025
06:00:00
Harrogate Woodlands
Timeseries Graph
n/mn/mn/m6 (1 Low)10 (1 Low)
*2
18/07/2025
08:00:00
High Muffles
Timeseries Graph
68 (3 Low)6 (1 Low)n/m6 (1 Low)11 (1 Low)
*2
18/07/2025
14:00:00
Hull Freetown
Timeseries Graph
80 (3 Low)36 (1 Low)2 (1 Low)14 (2 Low)23 (2 Low)
*2
18/07/2025
13:00:00
Hull Holderness Road
Timeseries Graph
n/m38 (1 Low)n/m13 (2 Low)20 (2 Low)
*2
18/07/2025
18:00:00
Immingham Woodlands Avenue
Timeseries Graph
73 (3 Low)36 (1 Low)n/m11 (1 Low)20 (2 Low)
*2
18/07/2025
20:00:00
Leeds Centre
Timeseries Graph
58 (2 Low)44 (1 Low)1 (1 Low)8 (1 Low)15 (1 Low)
*2
18/07/2025
10:30:00
Leeds Headingley Kerbside
Timeseries Graph
n/m31 (1 Low)n/m8 (1 Low)22 (2 Low)
*1
18/07/2025
01:00:00
Rotherham East Dene
Timeseries Graph
n/mn/mn/m9 (1 Low)13 (1 Low)
*2
18/07/2025
05:00:00
Scunthorpe Town
Timeseries Graph
n/m33 (1 Low)2 (1 Low)8 (1 Low)24 (2 Low)
*1
18/07/2025
03:00:00
Sheffield Barnsley Road
Timeseries Graph
n/m38 (1 Low)n/m9 (1 Low)n/m 18/07/2025
02:00:00
Sheffield Devonshire Green
Timeseries Graph
61 (2 Low)26 (1 Low)n/m6 (1 Low)10 (1 Low)
*2
18/07/2025
01:00:00
Sheffield Tinsley
Timeseries Graph
51 (2 Low)37 (1 Low)n/m7 (1 Low)13 (1 Low)
*2
18/07/2025
05:00:00
York Bootham
Timeseries Graph
65 (2 Low)16 (1 Low)n/m7 (1 Low)13 (1 Low)
*1
18/07/2025
12:00:00
York Fishergate
Timeseries Graph
n/m25 (1 Low)n/m8 (1 Low)19 (2 Low)
*1
18/07/2025
11:00:00

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