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.

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Maximum pollutant levels displayed on UK-AIR for the 24 hour period up to midday Sat 27th Apr 2024

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	96 (3 Low)	n/m	n/m	2 (1 Low)	4 (1 Low) ^*2	27/04/2024 07:00:00
Bush Estate Timeseries Graph	96 (3 Low)	10 (1 Low)	n/m	n/m	n/m	26/04/2024 19:00:00
Dumbarton Roadside Timeseries Graph	n/m	28 (1 Low)	n/m	n/m	n/m	27/04/2024 07:00:00
Edinburgh Nicolson Street Timeseries Graph	n/m	44 (1 Low)	n/m	n/m	n/m	27/04/2024 08:00:00
Edinburgh St Leonards Timeseries Graph	91 (3 Low)	25 (1 Low)	2 (1 Low)	3 (1 Low)	6 (1 Low) ^*2	26/04/2024 21:30:00
Glasgow Great Western Road Timeseries Graph	n/m	31 (1 Low)	n/m	n/m	n/m	27/04/2024 08:00:00
Glasgow High Street Timeseries Graph	n/m	33 (1 Low)	n/m	4 (1 Low)	8 (1 Low) ^*2	27/04/2024 12:00:00
Glasgow Kerbside Timeseries Graph	n/m	106 (2 Low)	n/m	n/m	n/m	26/04/2024 22:00:00
Glasgow Townhead Timeseries Graph	93 (3 Low)	22 (1 Low)	n/m	4 (1 Low)	7 (1 Low) ^*2	27/04/2024 12:00:00
Grangemouth Timeseries Graph	n/m	27 (1 Low)	393 (5 Moderate)	6 (1 Low)	9 (1 Low) ^*1	26/04/2024 13:45:00
Grangemouth Moray Timeseries Graph	n/m	26 (1 Low)	n/m	n/m	n/m	27/04/2024 11:00:00
Greenock A8 Roadside Timeseries Graph	n/m	49 (1 Low)	n/m	4 (1 Low)	14 (1 Low) ^*2	27/04/2024 12:00:00

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	87 (3 Low)	16 (1 Low)	n/m	6 (1 Low)	8 (1 Low) ^*2	27/04/2024 12:00:00
Chesterfield Roadside Timeseries Graph	n/m	32 (1 Low)	n/m	7 (1 Low)	11 (1 Low) ^*2	27/04/2024 12:00:00
Derby St Alkmund's Way Timeseries Graph	n/m	28 (1 Low)	n/m	n/m	n/m	26/04/2024 14:00:00
Derby Stockbrook Park Timeseries Graph	80 (3 Low)	n/m	n/m	6 (1 Low)	9 (1 Low) ^*2	27/04/2024 11:00:00
Ladybower Timeseries Graph	n/a	n/a	n/a	n/m	n/m	03/03/2024 15:15:00
Leicester A594 Roadside Timeseries Graph	n/m	29 (1 Low)	n/m	n/m	12 (1 Low) ^*1	26/04/2024 24:00:
Leicester University Timeseries Graph	93 (3 Low)	30 (1 Low)	n/m	5 (1 Low)	7 (1 Low) ^*2	27/04/2024 12:00:00
Lincoln Canwick Road Timeseries Graph	n/m	72 (2 Low)	n/m	n/m	n/m	26/04/2024 15:00:00
Northampton Spring Park Timeseries Graph	90 (3 Low)	8 (1 Low)	n/m	7 (1 Low)	n/m	27/04/2024 01:00:00
Nottingham Kenmore Gardens Timeseries Graph	88 (3 Low)	11 (1 Low)	1 (1 Low)	6 (1 Low)	10 (1 Low) ^*2	27/04/2024 09:30:00
Nottingham Western Boulevard Timeseries Graph	n/m	23 (1 Low)	n/m	n/m	19 (2 Low) ^*1	26/04/2024 23:00:00
Tallington Timeseries Graph	91 (3 Low)	n/m	n/m	5 (1 Low)	8 (1 Low) ^*2	27/04/2024 10:00:00
Toft Newton Timeseries Graph	95 (3 Low)	8 (1 Low)	n/m	5 (1 Low)	7 (1 Low) ^*2	27/04/2024 12:00:00

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	15 (1 Low)	n/m	6 (1 Low)	8 (1 Low) ^*2	27/04/2024 01:00:00
Cambridge Roadside Timeseries Graph	n/m	22 (1 Low)	n/m	n/m	n/m	27/04/2024 07:00:00
Luton A505 Roadside Timeseries Graph	n/m	50 (1 Low)	n/m	n/m	n/m	26/04/2024 16:00:00
Norwich Lakenfields Timeseries Graph	83 (3 Low)	23 (1 Low)	n/m	4 (1 Low)	5 (1 Low) ^*2	27/04/2024 05:00:00
Sandy Roadside Timeseries Graph	n/m	11 (1 Low)	n/m	4 (1 Low)	12 (1 Low) ^*1	27/04/2024 04:00:00
Sibton Timeseries Graph	82 (3 Low)	n/m	n/m	3 (1 Low)	5 (1 Low) ^*2	27/04/2024 03:00:00
Southend-on-Sea Timeseries Graph	89 (3 Low)	15 (1 Low)	n/m	5 (1 Low)	8 (1 Low) ^*2	27/04/2024 01:00:00
St Osyth Timeseries Graph	103 (4 Moderate)	7 (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	24 (1 Low)	n/m	8 (1 Low)	10 (1 Low) ^*1	27/04/2024 01:00:00
Thurrock Timeseries Graph	87 (3 Low)	16 (1 Low)	3 (1 Low)	7 (1 Low)	10 (1 Low) ^*2	26/04/2024 19:45:00
Weybourne Timeseries Graph	95 (3 Low)	n/m	n/m	4 (1 Low)	11 (1 Low) ^*2	27/04/2024 01:00:00
Wicken Fen Timeseries Graph	83 (3 Low)	10 (1 Low)	3 (1 Low)	4 (1 Low)	7 (1 Low) ^*2	27/04/2024 08:45:00

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	59 (1 Low)	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	35 (1 Low)	n/m	n/m	n/m	26/04/2024 21:00:00
London Bexley Timeseries Graph	n/m	20 (1 Low)	n/m	7 (1 Low)	10 (1 Low) ^*2	27/04/2024 01:00:00
London Bloomsbury Timeseries Graph	74 (3 Low)	42 (1 Low)	5 (1 Low)	7 (1 Low)	11 (1 Low) ^*2	26/04/2024 21:30:00
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	n/a	n/a	n/m	n/m	n/m	22/04/2024 19:00:00
London Harlington Timeseries Graph	78 (3 Low)	22 (1 Low)	n/m	7 (1 Low)	11 (1 Low) ^*2	27/04/2024 01:00:00
London Hillingdon Timeseries Graph	75 (3 Low)	57 (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	70 (3 Low)	58 (1 Low)	2 (1 Low)	9 (1 Low)	15 (1 Low) ^*1	26/04/2024 17:45:00
London N. Kensington Timeseries Graph	86 (3 Low)	24 (1 Low)	2 (1 Low)	7 (1 Low)	12 (1 Low) ^*2	27/04/2024 01:30:00
London Teddington Bushy Park Timeseries Graph	n/m	n/m	n/m	n/a	n/a	09/10/2023 10:00:00
London Westminster Timeseries Graph	64 (2 Low)	28 (1 Low)	n/m	5 (1 Low)	n/m	27/04/2024 01:00:00
Southwark A2 Old Kent Road Timeseries Graph	n/m	38 (1 Low)	n/m	n/m	19 (2 Low) ^*1	27/04/2024 12:00:00
Tower Hamlets Roadside Timeseries Graph	n/m	34 (1 Low)	n/m	n/m	n/m	26/04/2024 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	83 (3 Low)	16 (1 Low)	n/m	n/m	n/m	26/04/2024 18:00:00
Inverness Timeseries Graph	n/m	20 (1 Low)	n/m	2 (1 Low)	6 (1 Low) ^*2	27/04/2024 01:00:00
Lerwick Timeseries Graph	97 (3 Low)	n/m	n/m	n/m	n/m	26/04/2024 17:00:00
Strathvaich Timeseries Graph	87 (3 Low)	n/m	n/m	n/m	n/m	26/04/2024 19:00:00

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	39 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
Hartlepool St Abbs Walk Timeseries Graph	93 (3 Low)	29 (1 Low)	n/m	4 (1 Low)	9 (1 Low) ^*2	27/04/2024 07:00:00
Middlesbrough Timeseries Graph	89 (3 Low)	42 (1 Low)	1 (1 Low)	5 (1 Low)	14 (1 Low) ^*1	27/04/2024 02:45:00
Newcastle Centre Timeseries Graph	90 (3 Low)	64 (1 Low)	n/m	8 (1 Low)	16 (1 Low) ^*1	27/04/2024 09:00:00
Newcastle Cradlewell Roadside Timeseries Graph	n/m	84 (2 Low)	n/m	n/m	13 (1 Low) ^*1	26/04/2024 23:00:00
Stockton-on-Tees A1305 Roadside Timeseries Graph	n/m	44 (1 Low)	n/m	6 (1 Low)	n/m	27/04/2024 09:00:00
Stockton-on-Tees Eaglescliffe Timeseries Graph	n/m	30 (1 Low)	n/m	6 (1 Low)	20 (2 Low) ^*1	27/04/2024 11:00:00
Sunderland Silksworth Timeseries Graph	91 (3 Low)	33 (1 Low)	n/m	6 (1 Low)	9 (1 Low) ^*2	27/04/2024 09:00:00
Sunderland Wessington Way Timeseries Graph	n/m	51 (1 Low)	n/m	n/m	n/m	27/04/2024 02:00:00

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	91 (3 Low)	34 (1 Low)	n/m	2 (1 Low)	5 (1 Low) ^*2	27/04/2024 10:00:00
Aberdeen Union Street Roadside Timeseries Graph	n/m	58 (1 Low)	n/m	n/m	n/m	26/04/2024 13:00:00
Aberdeen Wellington Road Timeseries Graph	n/m	78 (2 Low)	n/m	n/m	n/m	26/04/2024 13:00:00
Dundee Mains Loan Timeseries Graph	n/m	8 (1 Low)	n/m	n/m	n/m	27/04/2024 08:00:00

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	87 (3 Low)	8 (1 Low)	n/m	n/m	n/m	26/04/2024 19:00:00
Wrexham Timeseries Graph	n/m	36 (1 Low)	3 (1 Low)	7 (1 Low)	11 (1 Low) ^*2	26/04/2024 18:45:00

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	34 (1 Low)	n/m	n/m	n/m	26/04/2024 24:00:
Blackburn Accrington Road Timeseries Graph	n/m	47 (1 Low)	n/m	n/m	n/m	26/04/2024 21:00:00
Blackburn Audley Park Timeseries Graph	88 (3 Low)	n/m	n/m	6 (1 Low)	9 (1 Low) ^*2	27/04/2024 04:00:00
Blackpool Marton Timeseries Graph	89 (3 Low)	11 (1 Low)	n/m	5 (1 Low)	7 (1 Low) ^*2	27/04/2024 07:00:00
Bury Whitefield Roadside Timeseries Graph	n/m	12 (1 Low)	n/m	n/m	12 (1 Low) ^*1	27/04/2024 08:00:00
Carlisle Morton A595 Timeseries Graph	n/m	17 (1 Low)	n/m	7 (1 Low)	10 (1 Low) ^*1	27/04/2024 03:00:00
Crewe Coppenhall Timeseries Graph	92 (3 Low)	17 (1 Low)	n/m	6 (1 Low)	8 (1 Low) ^*2	27/04/2024 12:00:00
Glazebury Timeseries Graph	78 (3 Low)	17 (1 Low)	n/m	6 (1 Low)	9 (1 Low) ^*2	27/04/2024 12:00:00
Liverpool Speke Timeseries Graph	84 (3 Low)	28 (1 Low)	2 (1 Low)	7 (1 Low)	12 (1 Low) ^*1	27/04/2024 08:45:00
Manchester Piccadilly Timeseries Graph	74 (3 Low)	45 (1 Low)	1 (1 Low)	9 (1 Low)	13 (1 Low) ^*2	27/04/2024 09:45:00
Manchester Sharston Timeseries Graph	79 (3 Low)	35 (1 Low)	n/m	n/m	n/m	26/04/2024 18:00:00
Preston Timeseries Graph	82 (3 Low)	22 (1 Low)	n/m	4 (1 Low)	7 (1 Low) ^*2	27/04/2024 04:00:00
Salford Eccles Timeseries Graph	77 (3 Low)	34 (1 Low)	n/m	8 (1 Low)	15 (1 Low) ^*2	27/04/2024 12:00:00
Shaw Crompton Way Timeseries Graph	n/m	31 (1 Low)	n/m	n/m	n/m	26/04/2024 17:00:00
St Helens Linkway Timeseries Graph	n/m	30 (1 Low)	n/m	n/m	17 (2 Low) ^*1	26/04/2024 15:00:00
Warrington Timeseries Graph	n/m	23 (1 Low)	n/m	6 (1 Low)	11 (1 Low) ^*1	27/04/2024 09:00:00
Widnes Milton Road Timeseries Graph	n/m	49 (1 Low)	n/m	n/m	n/m	26/04/2024 14:00:00
Wigan Centre Timeseries Graph	90 (3 Low)	15 (1 Low)	n/m	6 (1 Low)	8 (1 Low) ^*2	27/04/2024 12:00:00
Wirral Tranmere Timeseries Graph	87 (3 Low)	18 (1 Low)	n/m	7 (1 Low)	9 (1 Low) ^*2	27/04/2024 12:00:00

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	27/04/2024 01:00:00
Ballymena Antrim Road Timeseries Graph	n/m	55 (1 Low)	n/m	n/m	n/m	26/04/2024 23:00:00
Ballymena Ballykeel Timeseries Graph	n/m	39 (1 Low)	3 (1 Low)	n/m	n/m	27/04/2024 09:15:00
Belfast Centre Timeseries Graph	72 (3 Low)	49 (1 Low)	3 (1 Low)	5 (1 Low)	10 (1 Low) ^*2	26/04/2024 12:30:00
Belfast Stockman's Lane Timeseries Graph	n/m	79 (2 Low)	n/m	n/m	23 (2 Low) ^*1	27/04/2024 09:00:00
Derry Rosemount Timeseries Graph	84 (3 Low)	20 (1 Low)	20 (1 Low)	7 (1 Low)	10 (1 Low) ^*1	26/04/2024 24:00:
Lough Navar Timeseries Graph	81 (3 Low)	n/m	n/m	2 (1 Low)	3 (1 Low) ^*2	27/04/2024 01:00:00

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	79 (2 Low)	n/m	n/m	n/m	25/04/2024 18:00:00
Eskdalemuir Timeseries Graph	88 (3 Low)	2 (1 Low)	n/m	n/m	n/m	26/04/2024 17:00:00
Peebles Timeseries Graph	77 (3 Low)	7 (1 Low)	n/m	n/m	n/m	26/04/2024 18:00:00

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	67 (3 Low)	13 (1 Low)	n/m	10 (1 Low)	n/m	27/04/2024 04:00:00
Canterbury Timeseries Graph	91 (3 Low)	12 (1 Low)	n/m	8 (1 Low)	10 (1 Low) ^*2	27/04/2024 12:00:00
Chatham Roadside Timeseries Graph	n/m	26 (1 Low)	n/m	6 (1 Low)	15 (1 Low) ^*1	27/04/2024 01:00:00
Chilbolton Observatory Timeseries Graph	82 (3 Low)	10 (1 Low)	2 (1 Low)	10 (1 Low)	13 (1 Low) ^*2	27/04/2024 03:30:00
Eastbourne Timeseries Graph	77 (3 Low)	17 (1 Low)	n/m	9 (1 Low)	11 (1 Low) ^*2	27/04/2024 12:00:00
Horley Timeseries Graph	n/m	9 (1 Low)	n/m	n/m	n/m	26/04/2024 22:00:00
Lullington Heath Timeseries Graph	80 (3 Low)	13 (1 Low)	2 (1 Low)	9 (1 Low)	11 (1 Low) ^*2	26/04/2024 17:45:00
Milton Keynes Civic Centre Timeseries Graph	94 (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	18 (1 Low)	n/m	n/m	n/m	27/04/2024 12:00:00
Oxford St Ebbes Timeseries Graph	94 (3 Low)	11 (1 Low)	n/m	6 (1 Low)	9 (1 Low) ^*2	27/04/2024 01:00:00
Portsmouth Timeseries Graph	75 (3 Low)	23 (1 Low)	n/m	11 (1 Low)	15 (1 Low) ^*2	27/04/2024 01:00:00
Portsmouth Anglesea Road Timeseries Graph	n/m	16 (1 Low)	n/m	n/m	17 (2 Low) ^*1	26/04/2024 21:00:00
Reading London Road Timeseries Graph	n/m	48 (1 Low)	n/m	n/m	18 (2 Low) ^*1	26/04/2024 23:00:00
Reading New Town Timeseries Graph	73 (3 Low)	23 (1 Low)	n/m	9 (1 Low)	12 (1 Low) ^*2	27/04/2024 01:00:00
Rochester Stoke Timeseries Graph	90 (3 Low)	9 (1 Low)	1 (1 Low)	6 (1 Low)	9 (1 Low) ^*2	27/04/2024 12:00:00
Southampton A33 Timeseries Graph	n/m	46 (1 Low)	n/m	n/m	n/a	26/04/2024 17:00:00
Southampton Centre Timeseries Graph	66 (2 Low)	34 (1 Low)	2 (1 Low)	11 (1 Low)	15 (1 Low) ^*2	26/04/2024 12:15:00
Storrington Roadside Timeseries Graph	n/m	34 (1 Low)	n/m	n/m	n/m	26/04/2024 18:00:00
Worthing A27 Roadside Timeseries Graph	n/m	30 (1 Low)	n/m	12 (2 Low)	n/m	27/04/2024 03:00:00

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	85 (3 Low)	19 (1 Low)	2 (1 Low)	8 (1 Low)	13 (1 Low) ^*1	26/04/2024 12:15:00
Cardiff Newport Road Timeseries Graph	n/m	39 (1 Low)	n/m	n/m	16 (1 Low) ^*1	26/04/2024 16:00:00
Chepstow A48 Timeseries Graph	n/m	34 (1 Low)	n/m	9 (1 Low)	19 (2 Low) ^*1	27/04/2024 01:00:00
Cwmbran Crownbridge Timeseries Graph	85 (3 Low)	7 (1 Low)	n/m	n/m	n/m	26/04/2024 20:00:00
Hafod-yr-ynys Hill Roadside Timeseries Graph	n/m	44 (1 Low)	n/m	n/m	n/m	26/04/2024 23:00:00
Narberth Timeseries Graph	66 (2 Low)	5 (1 Low)	7 (1 Low)	8 (1 Low)	9 (1 Low) ^*2	26/04/2024 19:45:00
Newport Timeseries Graph	n/m	17 (1 Low)	n/m	7 (1 Low)	11 (1 Low) ^*2	27/04/2024 02:00:00
Port Talbot Margam Timeseries Graph	83 (3 Low)	17 (1 Low)	1 (1 Low)	7 (1 Low)	10 (1 Low) ^*3	27/04/2024 01:45:00
Swansea Roadside Timeseries Graph	n/m	40 (1 Low)	n/m	7 (1 Low)	14 (1 Low) ^*1	27/04/2024 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	11 (1 Low)	18 (2 Low) ^*2	27/04/2024 04:00:00
Bath A4 Roadside Timeseries Graph	n/m	46 (1 Low)	n/m	n/m	n/m	26/04/2024 20:00:00
Bournemouth Timeseries Graph	84 (3 Low)	14 (1 Low)	n/m	12 (2 Low)	n/m	27/04/2024 01:00:00
Bristol St Paul's Timeseries Graph	80 (3 Low)	20 (1 Low)	n/m	7 (1 Low)	15 (1 Low) ^*1	27/04/2024 01:00:00
Bristol Temple Way Timeseries Graph	n/m	53 (1 Low)	n/m	n/m	20 (2 Low) ^*1	26/04/2024 21:00:00
Charlton Mackrell Timeseries Graph	70 (3 Low)	9 (1 Low)	n/m	10 (1 Low)	13 (1 Low) ^*2	27/04/2024 01:00:00
Christchurch Barrack Road Timeseries Graph	n/m	39 (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	11/10/2023 19:00:00
Honiton Timeseries Graph	69 (3 Low)	13 (1 Low)	n/m	11 (1 Low)	14 (1 Low) ^*2	27/04/2024 02:00:00
Plymouth Centre Timeseries Graph	63 (2 Low)	21 (1 Low)	n/m	6 (1 Low)	13 (1 Low) ^*2	27/04/2024 01:00:00
Plymouth Tavistock Road Timeseries Graph	n/m	16 (1 Low)	n/m	n/m	n/m	27/04/2024 01:00:00
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	83 (3 Low)	13 (1 Low)	n/m	8 (1 Low)	11 (1 Low) ^*2	27/04/2024 01:00:00
Yarner Wood Timeseries Graph	78 (3 Low)	7 (1 Low)	n/m	6 (1 Low)	8 (1 Low) ^*2	27/04/2024 08:00:00

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	86 (3 Low)	n/m	n/m	n/m	n/m	26/04/2024 17:00:00

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	64 (2 Low)	20 (1 Low)	n/m	6 (1 Low)	10 (1 Low) ^*2	27/04/2024 12:00:00
Birmingham Ladywood Timeseries Graph	94 (3 Low)	18 (1 Low)	1 (1 Low)	6 (1 Low)	9 (1 Low) ^*2	27/04/2024 08:45:00
Burton-on-Trent Horninglow Timeseries Graph	85 (3 Low)	29 (1 Low)	n/m	5 (1 Low)	8 (1 Low) ^*2	27/04/2024 12:00:00
Cannock A5190 Roadside Timeseries Graph	n/m	29 (1 Low)	n/m	n/m	n/m	26/04/2024 16:00:00
Coventry Allesley Timeseries Graph	92 (3 Low)	10 (1 Low)	n/m	5 (1 Low)	7 (1 Low) ^*2	27/04/2024 12:00:00
Coventry Binley Road Timeseries Graph	n/m	21 (1 Low)	n/m	n/m	10 (1 Low) ^*1	26/04/2024 16:00:00
Leamington Spa Timeseries Graph	96 (3 Low)	11 (1 Low)	n/m	4 (1 Low)	7 (1 Low) ^*2	27/04/2024 12:00:00
Leamington Spa Rugby Road Timeseries Graph	n/m	17 (1 Low)	n/m	5 (1 Low)	8 (1 Low) ^*2	27/04/2024 07:00:00
Leominster Timeseries Graph	98 (3 Low)	8 (1 Low)	n/m	n/m	n/m	26/04/2024 21:00:00
Oldbury Birmingham Road Timeseries Graph	n/m	34 (1 Low)	n/m	n/m	n/m	26/04/2024 17:00:00
Stoke-on-Trent A50 Roadside Timeseries Graph	n/m	74 (2 Low)	n/m	n/m	11 (1 Low) ^*1	26/04/2024 16:00:00
Stoke-on-Trent Centre Timeseries Graph	81 (3 Low)	20 (1 Low)	n/m	6 (1 Low)	8 (1 Low) ^*2	27/04/2024 12:00:00
Telford Hollinswood Timeseries Graph	94 (3 Low)	18 (1 Low)	n/m	6 (1 Low)	9 (1 Low) ^*2	27/04/2024 12:00:00
Walsall Woodlands Timeseries Graph	90 (3 Low)	13 (1 Low)	n/m	n/m	n/m	26/04/2024 18:00:00
West Bromwich Kenrick Park Timeseries Graph	84 (3 Low)	18 (1 Low)	n/m	n/m	n/m	26/04/2024 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	85 (3 Low)	19 (1 Low)	15 (1 Low)	6 (1 Low)	9 (1 Low) ^*2	26/04/2024 23:00:00
Bradford Mayo Avenue Timeseries Graph	n/m	69 (2 Low)	n/m	n/m	n/m	26/04/2024 19:00:00
Dewsbury Ashworth Grange Timeseries Graph	84 (3 Low)	29 (1 Low)	n/m	5 (1 Low)	9 (1 Low) ^*2	27/04/2024 02:00:00
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	101 (4 Moderate)	1 (1 Low)	n/m	2 (1 Low)	3 (1 Low) ^*2	27/04/2024 01:00:00
Hull Freetown Timeseries Graph	84 (3 Low)	22 (1 Low)	3 (1 Low)	6 (1 Low)	10 (1 Low) ^*2	27/04/2024 01:15:00
Hull Holderness Road Timeseries Graph	n/m	35 (1 Low)	n/m	n/m	17 (2 Low) ^*1	26/04/2024 23:00:00
Immingham Woodlands Avenue Timeseries Graph	82 (3 Low)	44 (1 Low)	n/m	5 (1 Low)	7 (1 Low) ^*2	27/04/2024 12:00:00
Leeds Centre Timeseries Graph	84 (3 Low)	35 (1 Low)	5 (1 Low)	4 (1 Low)	7 (1 Low) ^*2	26/04/2024 16:00:00
Leeds Headingley Kerbside Timeseries Graph	n/m	44 (1 Low)	n/m	7 (1 Low)	19 (2 Low) ^*1	27/04/2024 04:00:00
Scunthorpe Town Timeseries Graph	n/m	35 (1 Low)	3 (1 Low)	n/m	15 (1 Low) ^*1	27/04/2024 01:30:00
Sheffield Barnsley Road Timeseries Graph	n/m	64 (1 Low)	n/m	8 (1 Low)	n/m	27/04/2024 12:00:00
Sheffield Devonshire Green Timeseries Graph	79 (3 Low)	37 (1 Low)	n/m	8 (1 Low)	12 (1 Low) ^*2	27/04/2024 12:00:00
Sheffield Tinsley Timeseries Graph	80 (3 Low)	36 (1 Low)	n/m	6 (1 Low)	11 (1 Low) ^*2	27/04/2024 12:00:00
York Bootham Timeseries Graph	85 (3 Low)	14 (1 Low)	n/m	7 (1 Low)	12 (1 Low) ^*1	27/04/2024 12:00:00
York Fishergate Timeseries Graph	n/m	30 (1 Low)	n/m	4 (1 Low)	16 (1 Low) ^*1	27/04/2024 02:00:00

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