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.

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Pollutant levels recorded for the hour up to 1am Sat 27th Apr 2024

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 PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Auchencorth Moss Timeseries Graph	78 (3 Low)	n/m	n/m	2 (1 Low)	4 (1 Low) ^*2	27/04/2024 01:00:00
Bush Estate Timeseries Graph	87 (3 Low)	n/a	n/m	n/m	n/m	26/04/2024 24:00:
Dumbarton Roadside Timeseries Graph	n/m	18 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Edinburgh Nicolson Street Timeseries Graph	n/m	23 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Edinburgh St Leonards Timeseries Graph	84 (3 Low)	12 (1 Low)	2 (1 Low)	2 (1 Low)	4 (1 Low) ^*2	27/04/2024 01:00:00
Glasgow Great Western Road Timeseries Graph	n/m	11 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Glasgow High Street Timeseries Graph	n/m	17 (1 Low)	n/m	3 (1 Low)	6 (1 Low) ^*2	27/04/2024 01:00:00
Glasgow Kerbside Timeseries Graph	n/m	77 (2 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Glasgow Townhead Timeseries Graph	80 (3 Low)	13 (1 Low)	n/m	2 (1 Low)	5 (1 Low) ^*2	27/04/2024 01:00:00
Grangemouth Timeseries Graph	n/m	13 (1 Low)	5 (1 Low)	5 (1 Low)	7 (1 Low) ^*1	27/04/2024 01:00:00
Grangemouth Moray Timeseries Graph	n/m	10 (1 Low)	n/m	n/m	n/m	26/04/2024 24:00:
Greenock A8 Roadside Timeseries Graph	n/m	9 (1 Low)	n/m	3 (1 Low)	14 (1 Low) ^*2	27/04/2024 01:00:00

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 PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Chesterfield Loundsley Green Timeseries Graph	67 (3 Low)	12 (1 Low)	n/m	4 (1 Low)	7 (1 Low) ^*2	27/04/2024 01:00:00
Chesterfield Roadside Timeseries Graph	n/m	11 (1 Low)	n/m	5 (1 Low)	10 (1 Low) ^*2	27/04/2024 01:00:00
Derby St Alkmund's Way Timeseries Graph	n/m	13 (1 Low)	n/m	n/m	n/m	26/04/2024 24:00:
Derby Stockbrook Park Timeseries Graph	70 (3 Low)	n/m	n/m	n/a	n/a	27/04/2024 01:00:00
Ladybower Timeseries Graph	n/a	n/a	n/a	n/m	n/m	04/03/2024 14:00:00
Leicester A594 Roadside Timeseries Graph	n/m	15 (1 Low)	n/m	n/m	12 (1 Low) ^*1	27/04/2024 01:00:00
Leicester University Timeseries Graph	80 (3 Low)	24 (1 Low)	n/m	4 (1 Low)	7 (1 Low) ^*2	27/04/2024 01:00:00
Lincoln Canwick Road Timeseries Graph	n/m	18 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Northampton Spring Park Timeseries Graph	81 (3 Low)	5 (1 Low)	n/m	7 (1 Low)	n/m	27/04/2024 01:00:00
Nottingham Kenmore Gardens Timeseries Graph	79 (3 Low)	8 (1 Low)	1 (1 Low)	5 (1 Low)	9 (1 Low) ^*2	27/04/2024 01:00:00
Nottingham Western Boulevard Timeseries Graph	n/m	19 (1 Low)	n/m	n/m	19 (2 Low) ^*1	27/04/2024 01:00:00
Tallington Timeseries Graph	75 (3 Low)	n/m	n/m	5 (1 Low)	7 (1 Low) ^*2	27/04/2024 01:00:00
Toft Newton Timeseries Graph	78 (3 Low)	5 (1 Low)	n/m	4 (1 Low)	6 (1 Low) ^*2	27/04/2024 01:00:00

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 PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Borehamwood Meadow Park Timeseries Graph	n/m	6 (1 Low)	n/m	6 (1 Low)	8 (1 Low) ^*2	27/04/2024 01:00:00
Cambridge Roadside Timeseries Graph	n/m	16 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Luton A505 Roadside Timeseries Graph	n/m	24 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Norwich Lakenfields Timeseries Graph	59 (2 Low)	23 (1 Low)	n/m	3 (1 Low)	5 (1 Low) ^*2	27/04/2024 01:00:00
Sandy Roadside Timeseries Graph	n/m	11 (1 Low)	n/m	4 (1 Low)	12 (1 Low) ^*1	27/04/2024 01:00:00
Sibton Timeseries Graph	68 (3 Low)	n/m	n/m	3 (1 Low)	5 (1 Low) ^*2	27/04/2024 01:00:00
Southend-on-Sea Timeseries Graph	86 (3 Low)	6 (1 Low)	n/m	5 (1 Low)	8 (1 Low) ^*2	27/04/2024 01:00:00
St Osyth Timeseries Graph	93 (3 Low)	5 (1 Low)	n/m	4 (1 Low)	5 (1 Low) ^*2	27/04/2024 01:00:00
Stanford-le-Hope Roadside Timeseries Graph	n/m	11 (1 Low)	n/m	8 (1 Low)	10 (1 Low) ^*1	27/04/2024 01:00:00
Thurrock Timeseries Graph	85 (3 Low)	9 (1 Low)	3 (1 Low)	7 (1 Low)	10 (1 Low) ^*2	27/04/2024 01:00:00
Weybourne Timeseries Graph	93 (3 Low)	n/m	n/m	4 (1 Low)	11 (1 Low) ^*2	27/04/2024 01:00:00
Wicken Fen Timeseries Graph	60 (2 Low)	6 (1 Low)	2 (1 Low)	4 (1 Low)	7 (1 Low) ^*2	27/04/2024 01:00:00

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 PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Camden Kerbside Timeseries Graph	n/m	n/a	n/m	11 (1 Low)	16 (1 Low) ^*1	27/04/2024 01:00:00
Ealing Horn Lane Timeseries Graph	n/m	n/m	n/m	n/m	24 (2 Low) ^*1	27/04/2024 01:00:00
Haringey Roadside Timeseries Graph	n/m	15 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
London Bexley Timeseries Graph	n/m	18 (1 Low)	n/m	7 (1 Low)	10 (1 Low) ^*2	27/04/2024 01:00:00
London Bloomsbury Timeseries Graph	63 (2 Low)	24 (1 Low)	4 (1 Low)	7 (1 Low)	11 (1 Low) ^*2	27/04/2024 01:00:00
London Eltham Timeseries Graph	n/a	n/a	n/m	n/a	n/a	04/07/2023 17:00:00
London Haringey Priory Park South Timeseries Graph	n/a	n/a	n/m	n/m	n/m	23/04/2024 14:00:00
London Harlington Timeseries Graph	78 (3 Low)	18 (1 Low)	n/m	7 (1 Low)	11 (1 Low) ^*2	26/04/2024 24:00:
London Hillingdon Timeseries Graph	52 (2 Low)	20 (1 Low)	n/m	7 (1 Low)	12 (1 Low) ^*2	27/04/2024 01:00:00
London Honor Oak Park Timeseries Graph	n/m	n/m	n/m	6 (1 Low)	9 (1 Low) ^*2	27/04/2024 01:00:00
London Marylebone Road Timeseries Graph	49 (2 Low)	33 (1 Low)	1 (1 Low)	9 (1 Low)	15 (1 Low) ^*1	27/04/2024 01:00:00
London N. Kensington Timeseries Graph	78 (3 Low)	12 (1 Low)	2 (1 Low)	7 (1 Low)	12 (1 Low) ^*2	27/04/2024 01:00:00
London Teddington Bushy Park Timeseries Graph	n/m	n/m	n/m	n/a	n/a	09/10/2023 16:00:00
London Westminster Timeseries Graph	60 (2 Low)	22 (1 Low)	n/m	5 (1 Low)	n/m	27/04/2024 01:00:00
Southwark A2 Old Kent Road Timeseries Graph	n/m	25 (1 Low)	n/m	n/m	19 (2 Low) ^*1	27/04/2024 01:00:00
Tower Hamlets Roadside Timeseries Graph	n/m	23 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00

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 PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Fort William Timeseries Graph	57 (2 Low)	7 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Inverness Timeseries Graph	n/m	5 (1 Low)	n/m	2 (1 Low)	6 (1 Low) ^*2	27/04/2024 01:00:00
Lerwick Timeseries Graph	87 (3 Low)	n/m	n/m	n/m	n/m	27/04/2024 01:00:00
Strathvaich Timeseries Graph	72 (3 Low)	n/m	n/m	n/m	n/m	27/04/2024 01:00:00

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 PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Billingham Timeseries Graph	n/m	39 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Hartlepool St Abbs Walk Timeseries Graph	82 (3 Low)	22 (1 Low)	n/m	4 (1 Low)	8 (1 Low) ^*2	27/04/2024 01:00:00
Middlesbrough Timeseries Graph	69 (3 Low)	27 (1 Low)	1 (1 Low)	3 (1 Low)	12 (1 Low) ^*1	27/04/2024 01:00:00
Newcastle Centre Timeseries Graph	62 (2 Low)	59 (1 Low)	n/m	5 (1 Low)	13 (1 Low) ^*1	27/04/2024 01:00:00
Newcastle Cradlewell Roadside Timeseries Graph	n/m	68 (2 Low)	n/m	n/m	9 (1 Low) ^*1	27/04/2024 01:00:00
Stockton-on-Tees A1305 Roadside Timeseries Graph	n/m	37 (1 Low)	n/m	4 (1 Low)	n/m	27/04/2024 01:00:00
Stockton-on-Tees Eaglescliffe Timeseries Graph	n/m	19 (1 Low)	n/m	5 (1 Low)	17 (2 Low) ^*1	27/04/2024 01:00:00
Sunderland Silksworth Timeseries Graph	64 (2 Low)	23 (1 Low)	n/m	4 (1 Low)	7 (1 Low) ^*2	27/04/2024 01:00:00
Sunderland Wessington Way Timeseries Graph	n/m	50 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00

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 PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Aberdeen Erroll Park Timeseries Graph	77 (3 Low)	34 (1 Low)	n/m	2 (1 Low)	4 (1 Low) ^*2	27/04/2024 01:00:00
Aberdeen Union Street Roadside Timeseries Graph	n/m	22 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Aberdeen Wellington Road Timeseries Graph	n/m	58 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Dundee Mains Loan Timeseries Graph	n/m	3 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00

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 PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Aston Hill Timeseries Graph	78 (3 Low)	4 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Wrexham Timeseries Graph	n/m	11 (1 Low)	n/a	6 (1 Low)	10 (1 Low) ^*2	27/04/2024 01:00:00

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 PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Birkenhead Borough Road Timeseries Graph	n/m	31 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Blackburn Accrington Road Timeseries Graph	n/m	19 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Blackburn Audley Park Timeseries Graph	67 (3 Low)	n/m	n/m	6 (1 Low)	9 (1 Low) ^*2	27/04/2024 01:00:00
Blackpool Marton Timeseries Graph	77 (3 Low)	9 (1 Low)	n/m	4 (1 Low)	7 (1 Low) ^*2	27/04/2024 01:00:00
Bury Whitefield Roadside Timeseries Graph	n/m	6 (1 Low)	n/m	n/m	11 (1 Low) ^*1	27/04/2024 01:00:00
Carlisle Morton A595 Timeseries Graph	n/m	10 (1 Low)	n/m	6 (1 Low)	10 (1 Low) ^*1	27/04/2024 01:00:00
Crewe Coppenhall Timeseries Graph	80 (3 Low)	4 (1 Low)	n/m	5 (1 Low)	8 (1 Low) ^*2	27/04/2024 01:00:00
Glazebury Timeseries Graph	59 (2 Low)	13 (1 Low)	n/m	4 (1 Low)	7 (1 Low) ^*2	27/04/2024 01:00:00
Liverpool Speke Timeseries Graph	71 (3 Low)	16 (1 Low)	2 (1 Low)	5 (1 Low)	11 (1 Low) ^*1	27/04/2024 01:00:00
Manchester Piccadilly Timeseries Graph	58 (2 Low)	24 (1 Low)	1 (1 Low)	7 (1 Low)	11 (1 Low) ^*2	27/04/2024 01:00:00
Manchester Sharston Timeseries Graph	70 (3 Low)	12 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Preston Timeseries Graph	73 (3 Low)	11 (1 Low)	n/m	4 (1 Low)	7 (1 Low) ^*2	27/04/2024 01:00:00
Salford Eccles Timeseries Graph	63 (2 Low)	30 (1 Low)	n/m	6 (1 Low)	13 (1 Low) ^*2	27/04/2024 01:00:00
Shaw Crompton Way Timeseries Graph	n/m	10 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
St Helens Linkway Timeseries Graph	n/m	13 (1 Low)	n/m	n/m	16 (1 Low) ^*1	27/04/2024 01:00:00
Warrington Timeseries Graph	n/m	12 (1 Low)	n/m	5 (1 Low)	9 (1 Low) ^*1	27/04/2024 01:00:00
Widnes Milton Road Timeseries Graph	n/m	26 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Wigan Centre Timeseries Graph	79 (3 Low)	13 (1 Low)	n/m	4 (1 Low)	7 (1 Low) ^*2	27/04/2024 01:00:00
Wirral Tranmere Timeseries Graph	77 (3 Low)	11 (1 Low)	n/m	4 (1 Low)	7 (1 Low) ^*2	27/04/2024 01:00:00

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 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	16 (1 Low) ^*1	27/04/2024 01:00:00
Ballymena Antrim Road Timeseries Graph	n/m	52 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Ballymena Ballykeel Timeseries Graph	n/m	35 (1 Low)	3 (1 Low)	n/m	n/m	27/04/2024 01:00:00
Belfast Centre Timeseries Graph	65 (2 Low)	25 (1 Low)	2 (1 Low)	4 (1 Low)	8 (1 Low) ^*2	27/04/2024 01:00:00
Belfast Stockman's Lane Timeseries Graph	n/m	45 (1 Low)	n/m	n/m	19 (2 Low) ^*1	27/04/2024 01:00:00
Derry Rosemount Timeseries Graph	70 (3 Low)	12 (1 Low)	14 (1 Low)	6 (1 Low)	8 (1 Low) ^*1	27/04/2024 01:00:00
Lough Navar Timeseries Graph	66 (2 Low)	n/m	n/m	2 (1 Low)	3 (1 Low) ^*2	27/04/2024 01:00:00

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 PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Dumfries Timeseries Graph	n/m	n/a	n/m	n/m	n/m	26/04/2024 16:00:00
Eskdalemuir Timeseries Graph	58 (2 Low)	1 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Peebles Timeseries Graph	49 (2 Low)	7 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00

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 PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Brighton Preston Park Timeseries Graph	62 (2 Low)	10 (1 Low)	n/m	10 (1 Low)	n/m	27/04/2024 01:00:00
Canterbury Timeseries Graph	83 (3 Low)	8 (1 Low)	n/m	6 (1 Low)	8 (1 Low) ^*2	27/04/2024 01:00:00
Chatham Roadside Timeseries Graph	n/m	8 (1 Low)	n/m	6 (1 Low)	15 (1 Low) ^*1	27/04/2024 01:00:00
Chilbolton Observatory Timeseries Graph	74 (3 Low)	4 (1 Low)	2 (1 Low)	10 (1 Low)	13 (1 Low) ^*2	27/04/2024 01:00:00
Eastbourne Timeseries Graph	68 (3 Low)	9 (1 Low)	n/m	7 (1 Low)	10 (1 Low) ^*2	27/04/2024 01:00:00
Horley Timeseries Graph	n/m	7 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Lullington Heath Timeseries Graph	73 (3 Low)	7 (1 Low)	1 (1 Low)	7 (1 Low)	9 (1 Low) ^*2	27/04/2024 01:00:00
Milton Keynes Civic Centre Timeseries Graph	78 (3 Low)	n/m	n/m	5 (1 Low)	8 (1 Low) ^*2	27/04/2024 01:00:00
Oxford Centre Roadside Timeseries Graph	n/m	11 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Oxford St Ebbes Timeseries Graph	83 (3 Low)	7 (1 Low)	n/m	6 (1 Low)	9 (1 Low) ^*2	27/04/2024 01:00:00
Portsmouth Timeseries Graph	71 (3 Low)	6 (1 Low)	n/m	11 (1 Low)	15 (1 Low) ^*2	27/04/2024 01:00:00
Portsmouth Anglesea Road Timeseries Graph	n/m	9 (1 Low)	n/m	n/m	17 (2 Low) ^*1	27/04/2024 01:00:00
Reading London Road Timeseries Graph	n/m	39 (1 Low)	n/m	n/m	18 (2 Low) ^*1	27/04/2024 01:00:00
Reading New Town Timeseries Graph	62 (2 Low)	14 (1 Low)	n/m	9 (1 Low)	12 (1 Low) ^*2	27/04/2024 01:00:00
Rochester Stoke Timeseries Graph	88 (3 Low)	6 (1 Low)	1 (1 Low)	6 (1 Low)	9 (1 Low) ^*2	27/04/2024 01:00:00
Southampton A33 Timeseries Graph	n/m	4 (1 Low)	n/m	n/m	n/a	27/04/2024 01:00:00
Southampton Centre Timeseries Graph	53 (2 Low)	9 (1 Low)	2 (1 Low)	11 (1 Low)	15 (1 Low) ^*2	27/04/2024 01:00:00
Storrington Roadside Timeseries Graph	n/m	11 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Worthing A27 Roadside Timeseries Graph	n/m	8 (1 Low)	n/m	12 (2 Low)	n/m	27/04/2024 01:00:00

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 PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Cardiff Centre Timeseries Graph	78 (3 Low)	19 (1 Low)	2 (1 Low)	8 (1 Low)	12 (1 Low) ^*1	27/04/2024 01:00:00
Cardiff Newport Road Timeseries Graph	n/m	27 (1 Low)	n/m	n/m	16 (1 Low) ^*1	27/04/2024 01:00:00
Chepstow A48 Timeseries Graph	n/m	6 (1 Low)	n/m	9 (1 Low)	19 (2 Low) ^*1	27/04/2024 01:00:00
Cwmbran Crownbridge Timeseries Graph	81 (3 Low)	5 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Hafod-yr-ynys Hill Roadside Timeseries Graph	n/m	17 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Narberth Timeseries Graph	65 (2 Low)	3 (1 Low)	1 (1 Low)	7 (1 Low)	9 (1 Low) ^*2	27/04/2024 01:00:00
Newport Timeseries Graph	n/m	8 (1 Low)	n/m	7 (1 Low)	11 (1 Low) ^*2	27/04/2024 01:00:00
Port Talbot Margam Timeseries Graph	76 (3 Low)	6 (1 Low)	1 (1 Low)	7 (1 Low)	n/a	27/04/2024 01:00:00
Swansea Roadside Timeseries Graph	n/m	14 (1 Low)	n/m	7 (1 Low)	14 (1 Low) ^*1	27/04/2024 01:00:00

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 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	11 (1 Low)	18 (2 Low) ^*2	27/04/2024 01:00:00
Bath A4 Roadside Timeseries Graph	n/m	15 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Bournemouth Timeseries Graph	79 (3 Low)	8 (1 Low)	n/m	12 (2 Low)	n/m	27/04/2024 01:00:00
Bristol St Paul's Timeseries Graph	73 (3 Low)	8 (1 Low)	n/m	7 (1 Low)	15 (1 Low) ^*1	27/04/2024 01:00:00
Bristol Temple Way Timeseries Graph	n/m	20 (1 Low)	n/m	n/m	20 (2 Low) ^*1	27/04/2024 01:00:00
Charlton Mackrell Timeseries Graph	49 (2 Low)	6 (1 Low)	n/m	10 (1 Low)	13 (1 Low) ^*2	27/04/2024 01:00:00
Christchurch Barrack Road Timeseries Graph	n/m	11 (1 Low)	n/m	10 (1 Low)	n/m	27/04/2024 01:00:00
Exeter Roadside Timeseries Graph	n/a	n/a	n/m	n/m	n/m	12/10/2023 04:00:00
Honiton Timeseries Graph	60 (2 Low)	5 (1 Low)	n/m	11 (1 Low)	14 (1 Low) ^*2	27/04/2024 01:00:00
Plymouth Centre Timeseries Graph	57 (2 Low)	17 (1 Low)	n/m	6 (1 Low)	13 (1 Low) ^*2	27/04/2024 01:00:00
Plymouth Tavistock Road Timeseries Graph	n/m	14 (1 Low)	n/m	n/m	n/m	26/04/2024 24:00:
Saltash Callington Road Timeseries Graph	n/m	n/m	n/m	3 (1 Low)	12 (1 Low) ^*1	27/04/2024 01:00:00
Swindon Walcot Timeseries Graph	75 (3 Low)	5 (1 Low)	n/m	8 (1 Low)	11 (1 Low) ^*2	27/04/2024 01:00:00
Yarner Wood Timeseries Graph	77 (3 Low)	4 (1 Low)	n/m	6 (1 Low)	8 (1 Low) ^*2	27/04/2024 01:00:00

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 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	27/04/2024 01:00:00

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 PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Birmingham A4540 Roadside Timeseries Graph	58 (2 Low)	15 (1 Low)	n/m	6 (1 Low)	10 (1 Low) ^*2	27/04/2024 01:00:00
Birmingham Ladywood Timeseries Graph	81 (3 Low)	11 (1 Low)	1 (1 Low)	5 (1 Low)	9 (1 Low) ^*2	27/04/2024 01:00:00
Burton-on-Trent Horninglow Timeseries Graph	71 (3 Low)	27 (1 Low)	n/m	4 (1 Low)	7 (1 Low) ^*2	27/04/2024 01:00:00
Cannock A5190 Roadside Timeseries Graph	n/m	8 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Coventry Allesley Timeseries Graph	82 (3 Low)	6 (1 Low)	n/m	4 (1 Low)	7 (1 Low) ^*2	27/04/2024 01:00:00
Coventry Binley Road Timeseries Graph	n/m	9 (1 Low)	n/m	n/m	9 (1 Low) ^*1	27/04/2024 01:00:00
Leamington Spa Timeseries Graph	82 (3 Low)	7 (1 Low)	n/m	4 (1 Low)	7 (1 Low) ^*2	27/04/2024 01:00:00
Leamington Spa Rugby Road Timeseries Graph	n/m	8 (1 Low)	n/m	5 (1 Low)	8 (1 Low) ^*2	27/04/2024 01:00:00
Leominster Timeseries Graph	93 (3 Low)	4 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Oldbury Birmingham Road Timeseries Graph	n/m	9 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Stoke-on-Trent A50 Roadside Timeseries Graph	n/m	12 (1 Low)	n/m	n/m	11 (1 Low) ^*1	27/04/2024 01:00:00
Stoke-on-Trent Centre Timeseries Graph	73 (3 Low)	5 (1 Low)	n/m	5 (1 Low)	8 (1 Low) ^*2	27/04/2024 01:00:00
Telford Hollinswood Timeseries Graph	81 (3 Low)	8 (1 Low)	n/m	5 (1 Low)	8 (1 Low) ^*2	27/04/2024 01:00:00
Walsall Woodlands Timeseries Graph	80 (3 Low)	5 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
West Bromwich Kenrick Park Timeseries Graph	75 (3 Low)	10 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00

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 PM_2.5 Particles (µgm^-3)	Running 24 Hour mean PM₁₀ Particles (µgm^-3)	Last updated
Barnsley Gawber Timeseries Graph	74 (3 Low)	14 (1 Low)	4 (1 Low)	5 (1 Low)	8 (1 Low) ^*2	27/04/2024 01:00:00
Bradford Mayo Avenue Timeseries Graph	n/m	52 (1 Low)	n/m	n/m	n/m	26/04/2024 24:00:
Dewsbury Ashworth Grange Timeseries Graph	63 (2 Low)	23 (1 Low)	n/m	5 (1 Low)	9 (1 Low) ^*2	27/04/2024 01:00:00
Doncaster A630 Cleveland Street Timeseries Graph	n/m	52 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
High Muffles Timeseries Graph	87 (3 Low)	1 (1 Low)	n/m	2 (1 Low)	3 (1 Low) ^*2	27/04/2024 01:00:00
Hull Freetown Timeseries Graph	71 (3 Low)	22 (1 Low)	3 (1 Low)	4 (1 Low)	9 (1 Low) ^*2	27/04/2024 01:00:00
Hull Holderness Road Timeseries Graph	n/m	28 (1 Low)	n/m	n/m	15 (1 Low) ^*1	27/04/2024 01:00:00
Immingham Woodlands Avenue Timeseries Graph	69 (3 Low)	19 (1 Low)	n/m	3 (1 Low)	7 (1 Low) ^*2	27/04/2024 01:00:00
Leeds Centre Timeseries Graph	65 (2 Low)	15 (1 Low)	2 (1 Low)	4 (1 Low)	7 (1 Low) ^*2	27/04/2024 01:00:00
Leeds Headingley Kerbside Timeseries Graph	n/m	36 (1 Low)	n/m	7 (1 Low)	17 (2 Low) ^*1	27/04/2024 01:00:00
Scunthorpe Town Timeseries Graph	n/m	10 (1 Low)	2 (1 Low)	n/m	13 (1 Low) ^*1	27/04/2024 01:00:00
Sheffield Barnsley Road Timeseries Graph	n/m	55 (1 Low)	n/m	6 (1 Low)	n/m	27/04/2024 01:00:00
Sheffield Devonshire Green Timeseries Graph	68 (3 Low)	21 (1 Low)	n/m	6 (1 Low)	9 (1 Low) ^*2	27/04/2024 01:00:00
Sheffield Tinsley Timeseries Graph	65 (2 Low)	17 (1 Low)	n/m	5 (1 Low)	10 (1 Low) ^*2	27/04/2024 01:00:00
York Bootham Timeseries Graph	67 (3 Low)	11 (1 Low)	n/m	6 (1 Low)	11 (1 Low) ^*1	27/04/2024 01:00:00
York Fishergate Timeseries Graph	n/m	19 (1 Low)	n/m	4 (1 Low)	16 (1 Low) ^*1	27/04/2024 01:00:00

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