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 4pm Fri 22nd Sep 2023

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 PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Auchencorth Moss Timeseries Graph	64 (2 Low)	n/m	n/m	2 (1 Low)	3 (1 Low) ^*2	22/09/2023 01:00:00
Bush Estate Timeseries Graph	63 (2 Low)	4 (1 Low)	n/m	n/m	n/m	21/09/2023 19:00:00
Dumbarton Roadside Timeseries Graph	n/m	28 (1 Low)	n/m	n/m	n/m	22/09/2023 09:00:00
Edinburgh Nicolson Street Timeseries Graph	n/m	65 (1 Low)	n/m	n/m	n/m	22/09/2023 16:00:00
Edinburgh St Leonards Timeseries Graph	56 (2 Low)	20 (1 Low)	6 (1 Low)	2 (1 Low)	5 (1 Low) ^*2	22/09/2023 13:15:00
Glasgow Great Western Road Timeseries Graph	n/m	47 (1 Low)	n/m	n/m	n/m	22/09/2023 09:00:00
Glasgow High Street Timeseries Graph	n/m	46 (1 Low)	n/m	4 (1 Low)	8 (1 Low) ^*2	22/09/2023 05:00:00
Glasgow Kerbside Timeseries Graph	n/m	62 (1 Low)	n/m	n/m	n/m	22/09/2023 09:00:00
Glasgow Townhead Timeseries Graph	57 (2 Low)	31 (1 Low)	n/m	3 (1 Low)	7 (1 Low) ^*2	22/09/2023 05:00:00
Grangemouth Timeseries Graph	n/m	18 (1 Low)	2 (1 Low)	3 (1 Low)	5 (1 Low) ^*1	21/09/2023 21:45:00
Grangemouth Moray Timeseries Graph	n/m	19 (1 Low)	n/m	n/m	n/m	22/09/2023 12:00:00
Greenock A8 Roadside Timeseries Graph	n/m	31 (1 Low)	n/m	3 (1 Low)	7 (1 Low) ^*2	22/09/2023 01:00:00

East Midlands

24 Hour Summary, based on data provided by Environment Agency
Monitoring site	Running 8 Hour mean Ozone (µgm^-3)	Hourly mean Nitrogen dioxide (µgm^-3)	Max 15 min mean Sulphur dioxide (µgm^-3)	Running 24 Hour mean PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Chesterfield Loundsley Green Timeseries Graph	61 (2 Low)	13 (1 Low)	n/m	3 (1 Low)	8 (1 Low) ^*2	22/09/2023 01:00:00
Chesterfield Roadside Timeseries Graph	n/m	24 (1 Low)	n/m	3 (1 Low)	8 (1 Low) ^*2	22/09/2023 01:00:00
Derby St Alkmund's Way Timeseries Graph	n/m	51 (1 Low)	n/m	n/m	n/m	21/09/2023 18:00:00
Ladybower Timeseries Graph	67 (3 Low)	8 (1 Low)	1 (1 Low)	n/m	n/m	22/09/2023 02:30:00
Leicester A594 Roadside Timeseries Graph	n/m	60 (1 Low)	n/m	n/m	13 (1 Low) ^*1	21/09/2023 19:00:00
Leicester University Timeseries Graph	60 (2 Low)	32 (1 Low)	n/m	4 (1 Low)	8 (1 Low) ^*2	22/09/2023 09:00:00
Lincoln Canwick Road Timeseries Graph	n/m	24 (1 Low)	n/m	n/m	n/m	21/09/2023 21:00:00
Northampton Spring Park Timeseries Graph	57 (2 Low)	33 (1 Low)	n/m	5 (1 Low)	n/m	22/09/2023 01:00:00
Nottingham Centre Timeseries Graph	57 (2 Low)	35 (1 Low)	3 (1 Low)	14 (2 Low)	19 (2 Low) ^*2	22/09/2023 08:45:00
Nottingham Western Boulevard Timeseries Graph	n/m	58 (1 Low)	n/m	n/m	15 (1 Low) ^*1	21/09/2023 21:00:00

Eastern

24 Hour Summary, based on data provided by Environment Agency
Monitoring site	Running 8 Hour mean Ozone (µgm^-3)	Hourly mean Nitrogen dioxide (µgm^-3)	Max 15 min mean Sulphur dioxide (µgm^-3)	Running 24 Hour mean PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Borehamwood Meadow Park Timeseries Graph	n/m	46 (1 Low)	n/m	4 (1 Low)	8 (1 Low) ^*2	22/09/2023 05:00:00
Cambridge Roadside Timeseries Graph	n/m	41 (1 Low)	n/m	n/m	n/m	21/09/2023 17:00:00
Luton A505 Roadside Timeseries Graph	n/m	61 (1 Low)	n/m	n/m	n/m	22/09/2023 08:00:00
Norwich Lakenfields Timeseries Graph	55 (2 Low)	15 (1 Low)	n/m	6 (1 Low)	11 (1 Low) ^*2	22/09/2023 10:00:00
Sandy Roadside Timeseries Graph	n/m	30 (1 Low)	n/m	4 (1 Low)	12 (1 Low) ^*1	22/09/2023 11:00:00
Sibton Timeseries Graph	60 (2 Low)	n/m	n/m	n/m	n/m	21/09/2023 19:00:00
Southend-on-Sea Timeseries Graph	57 (2 Low)	37 (1 Low)	n/m	4 (1 Low)	7 (1 Low) ^*2	22/09/2023 12:00:00
St Osyth Timeseries Graph	68 (3 Low)	9 (1 Low)	n/m	5 (1 Low)	8 (1 Low) ^*2	22/09/2023 11:00:00
Stanford-le-Hope Roadside Timeseries Graph	n/m	45 (1 Low)	n/m	7 (1 Low)	12 (1 Low) ^*1	22/09/2023 12:00:00
Thurrock Timeseries Graph	49 (2 Low)	50 (1 Low)	3 (1 Low)	5 (1 Low)	9 (1 Low) ^*2	22/09/2023 05:45:00
Weybourne Timeseries Graph	53 (2 Low)	n/m	n/m	4 (1 Low)	8 (1 Low) ^*2	22/09/2023 08:00:00
Wicken Fen Timeseries Graph	49 (2 Low)	9 (1 Low)	2 (1 Low)	3 (1 Low)	7 (1 Low) ^*2	21/09/2023 12:45:00

Greater London

24 Hour Summary, based on data provided by Environment Agency
Monitoring site	Running 8 Hour mean Ozone (µgm^-3)	Hourly mean Nitrogen dioxide (µgm^-3)	Max 15 min mean Sulphur dioxide (µgm^-3)	Running 24 Hour mean PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Camden Kerbside Timeseries Graph	n/m	57 (1 Low)	n/m	7 (1 Low)	11 (1 Low) ^*1	22/09/2023 07:00:00
Ealing Horn Lane Timeseries Graph	n/m	n/m	n/m	n/m	32 (2 Low) ^*1	22/09/2023 16:00:00
Haringey Roadside Timeseries Graph	n/m	61 (1 Low)	n/m	n/m	n/m	21/09/2023 22:00:00
London Bexley Timeseries Graph	n/m	31 (1 Low)	n/m	4 (1 Low)	8 (1 Low) ^*2	22/09/2023 11:00:00
London Bloomsbury Timeseries Graph	61 (2 Low)	54 (1 Low)	4 (1 Low)	4 (1 Low)	9 (1 Low) ^*2	21/09/2023 18:15:00
London Eltham Timeseries Graph	n/a	n/a	n/m	n/a	n/a	04/07/2023 01:00:00
London Haringey Priory Park South Timeseries Graph	41 (2 Low)	41 (1 Low)	n/m	n/m	n/m	21/09/2023 18:00:00
London Harlington Timeseries Graph	59 (2 Low)	50 (1 Low)	n/m	5 (1 Low)	9 (1 Low) ^*2	22/09/2023 12:00:00
London Hillingdon Timeseries Graph	32 (1 Low)	65 (1 Low)	n/m	6 (1 Low)	11 (1 Low) ^*2	22/09/2023 09:00:00
London Honor Oak Park Timeseries Graph	n/m	n/m	n/m	3 (1 Low)	7 (1 Low) ^*2	22/09/2023 12:00:00
London Marylebone Road Timeseries Graph	17 (1 Low)	95 (2 Low)	n/a	10 (1 Low)	16 (1 Low) ^*1	19/09/2023 16:00:00
London N. Kensington Timeseries Graph	62 (2 Low)	52 (1 Low)	2 (1 Low)	4 (1 Low)	8 (1 Low) ^*2	21/09/2023 17:00:00
London Teddington Bushy Park Timeseries Graph	n/m	n/m	n/m	4 (1 Low)	8 (1 Low) ^*2	22/09/2023 15:00:00
London Westminster Timeseries Graph	60 (2 Low)	49 (1 Low)	n/m	6 (1 Low)	n/m	22/09/2023 11:00:00
Southwark A2 Old Kent Road Timeseries Graph	n/m	56 (1 Low)	n/m	n/m	16 (1 Low) ^*1	21/09/2023 20:00:00
Tower Hamlets Roadside Timeseries Graph	n/m	44 (1 Low)	n/m	n/m	n/m	21/09/2023 21:00:00

Highland

24 Hour Summary, based on data provided by Environment Agency
Monitoring site	Running 8 Hour mean Ozone (µgm^-3)	Hourly mean Nitrogen dioxide (µgm^-3)	Max 15 min mean Sulphur dioxide (µgm^-3)	Running 24 Hour mean PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Fort William Timeseries Graph	59 (2 Low)	16 (1 Low)	n/m	n/m	n/m	21/09/2023 17:00:00
Inverness Timeseries Graph	n/m	19 (1 Low)	n/m	1 (1 Low)	3 (1 Low) ^*2	22/09/2023 16:00:00
Lerwick Timeseries Graph	69 (3 Low)	n/m	n/m	n/m	n/m	22/09/2023 12:00:00
Strathvaich Timeseries Graph	66 (2 Low)	n/m	n/m	n/m	n/m	21/09/2023 17:00:00

North East

24 Hour Summary, based on data provided by Environment Agency
Monitoring site	Running 8 Hour mean Ozone (µgm^-3)	Hourly mean Nitrogen dioxide (µgm^-3)	Max 15 min mean Sulphur dioxide (µgm^-3)	Running 24 Hour mean PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Billingham Timeseries Graph	n/m	46 (1 Low)	n/m	n/m	n/m	22/09/2023 08:00:00
Hartlepool St Abbs Walk Timeseries Graph	63 (2 Low)	16 (1 Low)	n/m	3 (1 Low)	6 (1 Low) ^*2	22/09/2023 01:00:00
Middlesbrough Timeseries Graph	73 (3 Low)	25 (1 Low)	3 (1 Low)	2 (1 Low)	8 (1 Low) ^*1	22/09/2023 08:30:00
Newcastle Centre Timeseries Graph	59 (2 Low)	45 (1 Low)	n/m	5 (1 Low)	13 (1 Low) ^*1	22/09/2023 13:00:00
Newcastle Cradlewell Roadside Timeseries Graph	n/m	79 (2 Low)	n/m	n/m	8 (1 Low) ^*1	22/09/2023 09:00:00
Stockton-on-Tees A1305 Roadside Timeseries Graph	n/m	25 (1 Low)	n/m	2 (1 Low)	n/m	22/09/2023 16:00:00
Stockton-on-Tees Eaglescliffe Timeseries Graph	n/m	21 (1 Low)	n/m	6 (1 Low)	7 (1 Low) ^*1	22/09/2023 01:00:00
Sunderland Silksworth Timeseries Graph	67 (3 Low)	17 (1 Low)	n/m	2 (1 Low)	5 (1 Low) ^*2	22/09/2023 03:00:00
Sunderland Wessington Way Timeseries Graph	n/m	27 (1 Low)	n/m	n/m	n/m	22/09/2023 08:00:00

North East Scotland

24 Hour Summary, based on data provided by Environment Agency
Monitoring site	Running 8 Hour mean Ozone (µgm^-3)	Hourly mean Nitrogen dioxide (µgm^-3)	Max 15 min mean Sulphur dioxide (µgm^-3)	Running 24 Hour mean PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Aberdeen Erroll Park Timeseries Graph	43 (2 Low)	34 (1 Low)	n/m	2 (1 Low)	5 (1 Low) ^*2	22/09/2023 01:00:00
Aberdeen Union Street Roadside Timeseries Graph	n/m	36 (1 Low)	n/m	n/m	n/m	22/09/2023 10:00:00
Aberdeen Wellington Road Timeseries Graph	n/m	54 (1 Low)	n/m	n/m	n/m	22/09/2023 08:00:00
Dundee Mains Loan Timeseries Graph	n/m	21 (1 Low)	n/m	n/m	n/m	22/09/2023 10:00:00

North Wales

24 Hour Summary, based on data provided by Environment Agency
Monitoring site	Running 8 Hour mean Ozone (µgm^-3)	Hourly mean Nitrogen dioxide (µgm^-3)	Max 15 min mean Sulphur dioxide (µgm^-3)	Running 24 Hour mean PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Aston Hill Timeseries Graph	67 (3 Low)	1 (1 Low)	n/m	n/m	n/m	22/09/2023 04:00:00
Wrexham Timeseries Graph	n/m	37 (1 Low)	3 (1 Low)	3 (1 Low)	7 (1 Low) ^*2	21/09/2023 19:45:00

North West & Merseyside

24 Hour Summary, based on data provided by Environment Agency
Monitoring site	Running 8 Hour mean Ozone (µgm^-3)	Hourly mean Nitrogen dioxide (µgm^-3)	Max 15 min mean Sulphur dioxide (µgm^-3)	Running 24 Hour mean PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Birkenhead Borough Road Timeseries Graph	n/m	25 (1 Low)	n/m	n/m	n/m	21/09/2023 21:00:00
Blackburn Accrington Road Timeseries Graph	n/m	45 (1 Low)	n/m	n/m	n/m	21/09/2023 22:00:00
Blackburn Audley Park Timeseries Graph	57 (2 Low)	n/m	n/m	3 (1 Low)	6 (1 Low) ^*2	22/09/2023 01:00:00
Blackpool Marton Timeseries Graph	74 (3 Low)	9 (1 Low)	n/m	3 (1 Low)	7 (1 Low) ^*2	22/09/2023 16:00:00
Bury Whitefield Roadside Timeseries Graph	n/m	51 (1 Low)	n/m	n/m	12 (1 Low) ^*1	21/09/2023 20:00:00
Carlisle Morton A595 Timeseries Graph	n/m	22 (1 Low)	n/m	7 (1 Low)	8 (1 Low) ^*1	22/09/2023 01:00:00
Crewe Coppenhall Timeseries Graph	52 (2 Low)	28 (1 Low)	n/m	4 (1 Low)	8 (1 Low) ^*2	22/09/2023 03:00:00
Glazebury Timeseries Graph	56 (2 Low)	29 (1 Low)	n/m	3 (1 Low)	7 (1 Low) ^*2	22/09/2023 08:00:00
Liverpool Speke Timeseries Graph	59 (2 Low)	34 (1 Low)	5 (1 Low)	3 (1 Low)	9 (1 Low) ^*1	21/09/2023 17:00:00
Manchester Piccadilly Timeseries Graph	46 (2 Low)	55 (1 Low)	2 (1 Low)	6 (1 Low)	14 (1 Low) ^*2	21/09/2023 24:15:
Manchester Sharston Timeseries Graph	66 (2 Low)	40 (1 Low)	n/m	n/m	n/m	21/09/2023 17:00:00
Preston Timeseries Graph	66 (2 Low)	44 (1 Low)	n/m	3 (1 Low)	7 (1 Low) ^*2	22/09/2023 03:00:00
Salford Eccles Timeseries Graph	58 (2 Low)	41 (1 Low)	n/m	6 (1 Low)	11 (1 Low) ^*2	22/09/2023 16:00:00
Shaw Crompton Way Timeseries Graph	n/m	47 (1 Low)	n/m	n/m	n/m	21/09/2023 17:00:00
St Helens Linkway Timeseries Graph	n/m	58 (1 Low)	n/m	n/m	14 (1 Low) ^*1	21/09/2023 19:00:00
Warrington Timeseries Graph	n/m	28 (1 Low)	n/m	3 (1 Low)	10 (1 Low) ^*1	22/09/2023 13:00:00
Widnes Milton Road Timeseries Graph	n/m	62 (1 Low)	n/m	n/m	n/m	21/09/2023 17:00:00
Wigan Centre Timeseries Graph	58 (2 Low)	36 (1 Low)	n/m	6 (1 Low)	10 (1 Low) ^*2	22/09/2023 13:00:00
Wirral Tranmere Timeseries Graph	61 (2 Low)	37 (1 Low)	n/m	3 (1 Low)	5 (1 Low) ^*2	22/09/2023 16:00:00

Northern Ireland

24 Hour Summary, based on data provided by Environment Agency
Monitoring site	Running 8 Hour mean Ozone (µgm^-3)	Hourly mean Nitrogen dioxide (µgm^-3)	Max 15 min mean Sulphur dioxide (µgm^-3)	Running 24 Hour mean PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Armagh Roadside Timeseries Graph	n/m	38 (1 Low)	n/m	n/m	17 (2 Low) ^*1	21/09/2023 21:00:00
Ballymena Antrim Road Timeseries Graph	n/m	33 (1 Low)	n/m	n/m	n/m	21/09/2023 20:00:00
Ballymena Ballykeel Timeseries Graph	n/m	17 (1 Low)	1 (1 Low)	n/m	n/m	21/09/2023 17:45:00
Belfast Centre Timeseries Graph	62 (2 Low)	27 (1 Low)	1 (1 Low)	4 (1 Low)	8 (1 Low) ^*2	21/09/2023 16:15:00
Belfast Stockman's Lane Timeseries Graph	n/m	75 (2 Low)	n/m	n/m	19 (2 Low) ^*1	22/09/2023 09:00:00
Derry Rosemount Timeseries Graph	67 (3 Low)	10 (1 Low)	1 (1 Low)	6 (1 Low)	9 (1 Low) ^*1	22/09/2023 13:15:00
Lough Navar Timeseries Graph	64 (2 Low)	n/m	n/m	3 (1 Low)	7 (1 Low) ^*2	22/09/2023 16:00:00

Scottish Borders

24 Hour Summary, based on data provided by Environment Agency
Monitoring site	Running 8 Hour mean Ozone (µgm^-3)	Hourly mean Nitrogen dioxide (µgm^-3)	Max 15 min mean Sulphur dioxide (µgm^-3)	Running 24 Hour mean PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Dumfries Timeseries Graph	n/m	46 (1 Low)	n/m	n/m	n/m	22/09/2023 10:00:00
Eskdalemuir Timeseries Graph	54 (2 Low)	2 (1 Low)	n/m	n/m	n/m	21/09/2023 18:00:00
Peebles Timeseries Graph	64 (2 Low)	5 (1 Low)	n/m	n/m	n/m	21/09/2023 19:00:00

South East

24 Hour Summary, based on data provided by Environment Agency
Monitoring site	Running 8 Hour mean Ozone (µgm^-3)	Hourly mean Nitrogen dioxide (µgm^-3)	Max 15 min mean Sulphur dioxide (µgm^-3)	Running 24 Hour mean PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Brighton Preston Park Timeseries Graph	65 (2 Low)	15 (1 Low)	n/m	2 (1 Low)	n/m	22/09/2023 09:00:00
Canterbury Timeseries Graph	63 (2 Low)	26 (1 Low)	n/m	3 (1 Low)	6 (1 Low) ^*2	22/09/2023 15:00:00
Chatham Roadside Timeseries Graph	n/m	43 (1 Low)	n/m	2 (1 Low)	15 (1 Low) ^*1	22/09/2023 16:00:00
Chilbolton Observatory Timeseries Graph	65 (2 Low)	9 (1 Low)	2 (1 Low)	3 (1 Low)	6 (1 Low) ^*2	21/09/2023 17:15:00
Eastbourne Timeseries Graph	n/m	n/a	n/m	n/a	n/a	27/07/2023 01:00:00
Horley Timeseries Graph	n/m	n/a	n/m	n/m	n/m	06/09/2023 21:00:00
Lullington Heath Timeseries Graph	69 (3 Low)	4 (1 Low)	2 (1 Low)	3 (1 Low)	6 (1 Low) ^*2	21/09/2023 20:15:00
Milton Keynes Civic Centre Timeseries Graph	60 (2 Low)	n/m	n/m	3 (1 Low)	7 (1 Low) ^*2	22/09/2023 09:00:00
Oxford Centre Roadside Timeseries Graph	n/m	65 (1 Low)	n/m	n/m	n/m	21/09/2023 18:00:00
Oxford St Ebbes Timeseries Graph	40 (2 Low)	22 (1 Low)	n/m	3 (1 Low)	6 (1 Low) ^*2	22/09/2023 02:00:00
Portsmouth Timeseries Graph	67 (3 Low)	49 (1 Low)	n/m	4 (1 Low)	8 (1 Low) ^*2	22/09/2023 07:00:00
Portsmouth Anglesea Road Timeseries Graph	n/m	34 (1 Low)	n/m	n/m	14 (1 Low) ^*1	21/09/2023 18:00:00
Reading London Road Timeseries Graph	n/m	43 (1 Low)	n/m	n/m	16 (1 Low) ^*1	21/09/2023 21:00:00
Reading New Town Timeseries Graph	41 (2 Low)	28 (1 Low)	n/m	3 (1 Low)	8 (1 Low) ^*2	22/09/2023 10:00:00
Rochester Stoke Timeseries Graph	64 (2 Low)	23 (1 Low)	2 (1 Low)	4 (1 Low)	10 (1 Low) ^*2	22/09/2023 11:45:00
Southampton A33 Timeseries Graph	n/m	50 (1 Low)	n/m	n/m	13 (1 Low) ^*1	21/09/2023 21:00:00
Southampton Centre Timeseries Graph	45 (2 Low)	55 (1 Low)	4 (1 Low)	4 (1 Low)	9 (1 Low) ^*2	21/09/2023 17:00:00
Storrington Roadside Timeseries Graph	n/m	29 (1 Low)	n/m	n/m	n/m	21/09/2023 21:00:00
Worthing A27 Roadside Timeseries Graph	n/m	41 (1 Low)	n/m	4 (1 Low)	n/m	22/09/2023 01:00:00

South Wales

24 Hour Summary, based on data provided by Environment Agency
Monitoring site	Running 8 Hour mean Ozone (µgm^-3)	Hourly mean Nitrogen dioxide (µgm^-3)	Max 15 min mean Sulphur dioxide (µgm^-3)	Running 24 Hour mean PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Cardiff Centre Timeseries Graph	54 (2 Low)	32 (1 Low)	n/a	7 (1 Low)	10 (1 Low) ^*1	20/09/2023 18:00:00
Cardiff Newport Road Timeseries Graph	n/m	36 (1 Low)	n/m	n/m	10 (1 Low) ^*1	21/09/2023 22:00:00
Chepstow A48 Timeseries Graph	n/m	71 (2 Low)	n/m	5 (1 Low)	20 (2 Low) ^*1	22/09/2023 15:00:00
Cwmbran Crownbridge Timeseries Graph	45 (2 Low)	20 (1 Low)	n/m	n/m	n/m	21/09/2023 18:00:00
Hafod-yr-ynys Roadside Timeseries Graph	n/m	n/a	n/m	n/m	n/m	14/09/2023 17:00:00
Narberth Timeseries Graph	55 (2 Low)	5 (1 Low)	2 (1 Low)	2 (1 Low)	6 (1 Low) ^*2	21/09/2023 19:15:00
Newport Timeseries Graph	n/m	31 (1 Low)	n/m	4 (1 Low)	10 (1 Low) ^*2	22/09/2023 01:00:00
Port Talbot Margam Timeseries Graph	56 (2 Low)	27 (1 Low)	3 (1 Low)	8 (1 Low)	23 (2 Low) ^*3	21/09/2023 17:30:00
Swansea Roadside Timeseries Graph	n/m	n/a	n/m	n/a	n/a	13/09/2023 01:00:00

South West

24 Hour Summary, based on data provided by Environment Agency
Monitoring site	Running 8 Hour mean Ozone (µgm^-3)	Hourly mean Nitrogen dioxide (µgm^-3)	Max 15 min mean Sulphur dioxide (µgm^-3)	Running 24 Hour mean PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Barnstaple A39 Timeseries Graph	n/m	n/m	n/m	8 (1 Low)	9 (1 Low) ^*1	22/09/2023 01:00:00
Bath A4 Roadside Timeseries Graph	n/m	46 (1 Low)	n/m	n/m	n/m	21/09/2023 18:00:00
Bournemouth Timeseries Graph	80 (3 Low)	26 (1 Low)	n/m	5 (1 Low)	n/m	22/09/2023 09:00:00
Bristol St Paul's Timeseries Graph	63 (2 Low)	42 (1 Low)	n/m	6 (1 Low)	12 (1 Low) ^*1	22/09/2023 12:00:00
Bristol Temple Way Timeseries Graph	n/m	46 (1 Low)	n/m	n/m	12 (1 Low) ^*1	22/09/2023 09:00:00
Charlton Mackrell Timeseries Graph	66 (2 Low)	14 (1 Low)	n/m	3 (1 Low)	6 (1 Low) ^*2	22/09/2023 01:00:00
Christchurch Barrack Road Timeseries Graph	n/m	29 (1 Low)	n/m	5 (1 Low)	n/m	22/09/2023 01:00:00
Exeter Roadside Timeseries Graph	42 (2 Low)	48 (1 Low)	n/m	n/m	n/m	22/09/2023 16:00:00
Honiton Timeseries Graph	59 (2 Low)	29 (1 Low)	n/m	2 (1 Low)	5 (1 Low) ^*2	22/09/2023 01:00:00
Plymouth Centre Timeseries Graph	64 (2 Low)	61 (1 Low)	n/m	4 (1 Low)	10 (1 Low) ^*2	22/09/2023 01:00:00
Plymouth Tavistock Road Timeseries Graph	n/m	55 (1 Low)	n/m	n/m	n/m	22/09/2023 08:00:00
Saltash Callington Road Timeseries Graph	n/m	n/m	n/m	1 (1 Low)	6 (1 Low) ^*1	22/09/2023 16:00:00
Swindon Walcot Timeseries Graph	60 (2 Low)	26 (1 Low)	n/m	4 (1 Low)	8 (1 Low) ^*2	22/09/2023 03:00:00
Yarner Wood Timeseries Graph	61 (2 Low)	1 (1 Low)	n/m	2 (1 Low)	5 (1 Low) ^*2	22/09/2023 01:00:00

West Ireland

24 Hour Summary, based on data provided by Environment Agency
Monitoring site	Running 8 Hour mean Ozone (µgm^-3)	Hourly mean Nitrogen dioxide (µgm^-3)	Max 15 min mean Sulphur dioxide (µgm^-3)	Running 24 Hour mean PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Mace Head Timeseries Graph	78 (3 Low)	n/m	n/m	n/m	n/m	22/09/2023 15:00:00

West Midlands

24 Hour Summary, based on data provided by Environment Agency
Monitoring site	Running 8 Hour mean Ozone (µgm^-3)	Hourly mean Nitrogen dioxide (µgm^-3)	Max 15 min mean Sulphur dioxide (µgm^-3)	Running 24 Hour mean PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Birmingham A4540 Roadside Timeseries Graph	42 (2 Low)	69 (2 Low)	n/m	5 (1 Low)	15 (1 Low) ^*2	22/09/2023 02:00:00
Birmingham Ladywood Timeseries Graph	62 (2 Low)	41 (1 Low)	4 (1 Low)	3 (1 Low)	7 (1 Low) ^*2	21/09/2023 16:15:00
Burton-on-Trent Horninglow Timeseries Graph	54 (2 Low)	38 (1 Low)	n/m	4 (1 Low)	8 (1 Low) ^*2	22/09/2023 06:00:00
Cannock A5190 Roadside Timeseries Graph	n/m	46 (1 Low)	n/m	n/m	n/m	22/09/2023 08:00:00
Coventry Allesley Timeseries Graph	52 (2 Low)	29 (1 Low)	n/m	4 (1 Low)	8 (1 Low) ^*2	22/09/2023 08:00:00
Coventry Binley Road Timeseries Graph	n/m	46 (1 Low)	n/m	n/m	13 (1 Low) ^*1	21/09/2023 18:00:00
Leamington Spa Timeseries Graph	63 (2 Low)	31 (1 Low)	n/m	3 (1 Low)	7 (1 Low) ^*2	22/09/2023 08:00:00
Leamington Spa Rugby Road Timeseries Graph	n/m	20 (1 Low)	n/m	3 (1 Low)	6 (1 Low) ^*2	22/09/2023 08:00:00
Leominster Timeseries Graph	61 (2 Low)	15 (1 Low)	n/m	n/m	n/m	21/09/2023 19:00:00
Oldbury Birmingham Road Timeseries Graph	n/m	60 (1 Low)	n/m	n/m	n/m	22/09/2023 08:00:00
Stoke-on-Trent A50 Roadside Timeseries Graph	n/m	79 (2 Low)	n/m	n/m	17 (2 Low) ^*1	21/09/2023 21:00:00
Stoke-on-Trent Centre Timeseries Graph	51 (2 Low)	67 (1 Low)	n/m	5 (1 Low)	11 (1 Low) ^*2	22/09/2023 07:00:00
Telford Hollinswood Timeseries Graph	67 (3 Low)	25 (1 Low)	n/m	3 (1 Low)	7 (1 Low) ^*2	22/09/2023 01:00:00
Walsall Woodlands Timeseries Graph	62 (2 Low)	34 (1 Low)	n/m	n/m	n/m	21/09/2023 18:00:00
West Bromwich Kenrick Park Timeseries Graph	58 (2 Low)	49 (1 Low)	n/m	n/m	n/m	21/09/2023 18:00:00

Yorkshire & Humberside

24 Hour Summary, based on data provided by Environment Agency
Monitoring site	Running 8 Hour mean Ozone (µgm^-3)	Hourly mean Nitrogen dioxide (µgm^-3)	Max 15 min mean Sulphur dioxide (µgm^-3)	Running 24 Hour mean PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Barnsley Gawber Timeseries Graph	62 (2 Low)	24 (1 Low)	3 (1 Low)	4 (1 Low)	7 (1 Low) ^*2	22/09/2023 05:45:00
Bradford Mayo Avenue Timeseries Graph	n/m	43 (1 Low)	n/m	n/m	n/m	21/09/2023 20:00:00
Dewsbury Ashworth Grove Timeseries Graph	63 (2 Low)	53 (1 Low)	n/m	6 (1 Low)	11 (1 Low) ^*2	22/09/2023 12:00:00
Doncaster A630 Cleveland Street Timeseries Graph	n/m	49 (1 Low)	n/m	n/m	n/m	22/09/2023 08:00:00
High Muffles Timeseries Graph	66 (2 Low)	4 (1 Low)	n/m	3 (1 Low)	6 (1 Low) ^*2	22/09/2023 01:00:00
Hull Freetown Timeseries Graph	56 (2 Low)	41 (1 Low)	5 (1 Low)	5 (1 Low)	12 (1 Low) ^*2	22/09/2023 09:45:00
Hull Holderness Road Timeseries Graph	n/m	62 (1 Low)	n/m	n/m	14 (1 Low) ^*1	21/09/2023 18:00:00
Immingham Woodlands Avenue Timeseries Graph	62 (2 Low)	23 (1 Low)	n/m	4 (1 Low)	8 (1 Low) ^*2	22/09/2023 09:00:00
Leeds Centre Timeseries Graph	55 (2 Low)	13 (1 Low)	3 (1 Low)	6 (1 Low)	10 (1 Low) ^*2	21/09/2023 23:45:00
Leeds Headingley Kerbside Timeseries Graph	n/m	50 (1 Low)	n/m	6 (1 Low)	14 (1 Low) ^*1	22/09/2023 12:00:00
Scunthorpe Town Timeseries Graph	n/m	34 (1 Low)	3 (1 Low)	n/m	19 (2 Low) ^*1	22/09/2023 06:45:00
Sheffield Barnsley Road Timeseries Graph	n/m	52 (1 Low)	n/m	6 (1 Low)	n/m	22/09/2023 03:00:00
Sheffield Devonshire Green Timeseries Graph	52 (2 Low)	36 (1 Low)	n/m	4 (1 Low)	8 (1 Low) ^*2	22/09/2023 01:00:00
Sheffield Tinsley Timeseries Graph	50 (2 Low)	44 (1 Low)	n/m	5 (1 Low)	13 (1 Low) ^*2	22/09/2023 01:00:00
York Bootham Timeseries Graph	53 (2 Low)	28 (1 Low)	n/m	7 (1 Low)	13 (1 Low) ^*1	22/09/2023 12:00:00
York Fishergate Timeseries Graph	n/m	28 (1 Low)	n/m	7 (1 Low)	14 (1 Low) ^*1	22/09/2023 12:00:00

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

UK AIR

Air Information Resource