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.

PM₁₀ data is from a FDMS PM₁₀ instrument type unless specified
View the legend
Maximum pollutant levels displayed on UK-AIR for the 24 hour period up to 9am Wed 31st May 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	91 (3 Low)	n/m	n/m	6 (1 Low)	12 (1 Low) ^*2	31/05/2023 01:00:00
Bush Estate Timeseries Graph	88 (3 Low)	8 (1 Low)	n/m	n/m	n/m	30/05/2023 21:00:00
Dumbarton Roadside Timeseries Graph	n/m	n/a	n/m	n/m	n/m	23/05/2023 18:00:00
Edinburgh Nicolson Street Timeseries Graph	n/m	29 (1 Low)	n/m	n/m	n/m	31/05/2023 09:00:00
Edinburgh St Leonards Timeseries Graph	74 (3 Low)	10 (1 Low)	3 (1 Low)	6 (1 Low)	12 (1 Low) ^*2	30/05/2023 22:00:00
Glasgow Great Western Road Timeseries Graph	n/m	23 (1 Low)	n/m	n/m	n/m	30/05/2023 21:00:00
Glasgow High Street Timeseries Graph	n/m	32 (1 Low)	n/m	8 (1 Low)	16 (1 Low) ^*2	31/05/2023 09:00:00
Glasgow Kerbside Timeseries Graph	n/m	65 (1 Low)	n/m	n/m	n/m	30/05/2023 10:00:00
Glasgow Townhead Timeseries Graph	102 (4 Moderate)	16 (1 Low)	n/m	8 (1 Low)	16 (1 Low) ^*2	31/05/2023 09:00:00
Grangemouth Timeseries Graph	n/m	28 (1 Low)	152 (2 Low)	6 (1 Low)	14 (1 Low) ^*1	30/05/2023 11:15:00
Grangemouth Moray Timeseries Graph	n/m	23 (1 Low)	n/m	n/m	n/m	30/05/2023 10:00:00
Greenock A8 Roadside Timeseries Graph	n/m	43 (1 Low)	n/m	8 (1 Low)	18 (2 Low) ^*2	31/05/2023 09:00:00

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	75 (3 Low)	7 (1 Low)	n/m	7 (1 Low)	13 (1 Low) ^*2	31/05/2023 01:00:00
Chesterfield Roadside Timeseries Graph	n/m	121 (2 Low)	n/m	8 (1 Low)	15 (1 Low) ^*2	31/05/2023 01:00:00
Derby St Alkmund's Way Timeseries Graph	n/m	22 (1 Low)	n/m	n/m	n/m	31/05/2023 08:00:00
Ladybower Timeseries Graph	80 (3 Low)	5 (1 Low)	2 (1 Low)	n/m	n/m	30/05/2023 20:15:00
Leicester A594 Roadside Timeseries Graph	n/m	16 (1 Low)	n/m	n/m	12 (1 Low) ^*1	30/05/2023 14:00:00
Leicester University Timeseries Graph	73 (3 Low)	19 (1 Low)	n/m	6 (1 Low)	10 (1 Low) ^*2	31/05/2023 01:00:00
Lincoln Canwick Road Timeseries Graph	n/m	47 (1 Low)	n/m	n/m	n/m	30/05/2023 18:00:00
Northampton Spring Park Timeseries Graph	68 (3 Low)	4 (1 Low)	n/m	n/a	n/m	27/05/2023 17:00:00
Nottingham Centre Timeseries Graph	72 (3 Low)	14 (1 Low)	1 (1 Low)	10 (1 Low)	18 (2 Low) ^*2	30/05/2023 09:15:00
Nottingham Western Boulevard Timeseries Graph	n/m	35 (1 Low)	n/m	n/m	18 (2 Low) ^*1	31/05/2023 08:00:00

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	5 (1 Low)	n/m	6 (1 Low)	10 (1 Low) ^*2	31/05/2023 01:00:00
Cambridge Roadside Timeseries Graph	n/m	15 (1 Low)	n/m	n/m	n/m	30/05/2023 15:00:00
Luton A505 Roadside Timeseries Graph	n/m	50 (1 Low)	n/m	n/m	n/m	31/05/2023 09:00:00
Norwich Lakenfields Timeseries Graph	82 (3 Low)	6 (1 Low)	n/m	6 (1 Low)	10 (1 Low) ^*2	31/05/2023 01:00:00
Sandy Roadside Timeseries Graph	n/m	5 (1 Low)	n/m	2 (1 Low)	11 (1 Low) ^*1	31/05/2023 01:00:00
Sibton Timeseries Graph	84 (3 Low)	n/m	n/m	n/m	n/m	30/05/2023 10:00:00
Southend-on-Sea Timeseries Graph	80 (3 Low)	11 (1 Low)	n/m	6 (1 Low)	11 (1 Low) ^*2	31/05/2023 01:00:00
St Osyth Timeseries Graph	84 (3 Low)	10 (1 Low)	n/m	5 (1 Low)	9 (1 Low) ^*2	31/05/2023 01:00:00
Stanford-le-Hope Roadside Timeseries Graph	n/m	23 (1 Low)	n/m	n/a	15 (1 Low) ^*1	27/05/2023 01:00:00
Thurrock Timeseries Graph	81 (3 Low)	11 (1 Low)	1 (1 Low)	6 (1 Low)	12 (1 Low) ^*2	31/05/2023 07:00:00
Weybourne Timeseries Graph	84 (3 Low)	n/m	n/m	5 (1 Low)	10 (1 Low) ^*2	31/05/2023 01:00:00
Wicken Fen Timeseries Graph	85 (3 Low)	3 (1 Low)	3 (1 Low)	6 (1 Low)	11 (1 Low) ^*2	30/05/2023 12:15:00

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	42 (1 Low)	n/m	6 (1 Low)	17 (2 Low) ^*1	31/05/2023 01:00:00
Ealing Horn Lane Timeseries Graph	n/m	n/m	n/m	n/m	31 (2 Low) ^*1	31/05/2023 01:00:00
Haringey Roadside Timeseries Graph	n/m	25 (1 Low)	n/m	n/m	n/m	31/05/2023 09:00:00
London Bexley Timeseries Graph	n/m	n/a	n/m	n/a	n/a	16/05/2023 10:00:00
London Bloomsbury Timeseries Graph	73 (3 Low)	18 (1 Low)	1 (1 Low)	6 (1 Low)	15 (1 Low) ^*2	31/05/2023 08:45:00
London Eltham Timeseries Graph	43 (2 Low)	9 (1 Low)	n/m	5 (1 Low)	10 (1 Low) ^*2	31/05/2023 01:00:00
London Haringey Priory Park South Timeseries Graph	65 (2 Low)	13 (1 Low)	n/m	n/m	n/m	30/05/2023 14:00:00
London Harlington Timeseries Graph	79 (3 Low)	11 (1 Low)	n/m	6 (1 Low)	14 (1 Low) ^*2	31/05/2023 01:00:00
London Hillingdon Timeseries Graph	72 (3 Low)	8 (1 Low)	n/m	6 (1 Low)	13 (1 Low) ^*2	31/05/2023 01:00:00
London Honor Oak Park Timeseries Graph	n/m	n/m	n/m	6 (1 Low)	11 (1 Low) ^*2	31/05/2023 01:00:00
London Marylebone Road Timeseries Graph	64 (2 Low)	20 (1 Low)	1 (1 Low)	9 (1 Low)	18 (2 Low) ^*1	30/05/2023 16:30:00
London N. Kensington Timeseries Graph	79 (3 Low)	6 (1 Low)	2 (1 Low)	7 (1 Low)	13 (1 Low) ^*2	30/05/2023 13:45:00
London Teddington Bushy Park Timeseries Graph	n/m	n/m	n/m	7 (1 Low)	14 (1 Low) ^*2	31/05/2023 01:00:00
London Westminster Timeseries Graph	73 (3 Low)	28 (1 Low)	n/m	7 (1 Low)	n/m	31/05/2023 01:00:00
Southwark A2 Old Kent Road Timeseries Graph	n/m	26 (1 Low)	n/m	n/m	23 (2 Low) ^*1	31/05/2023 07:00:00
Tower Hamlets Roadside Timeseries Graph	n/m	25 (1 Low)	n/m	n/m	n/m	31/05/2023 08:00:00

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	89 (3 Low)	9 (1 Low)	n/m	n/m	n/m	30/05/2023 20:00:00
Inverness Timeseries Graph	n/m	21 (1 Low)	n/m	7 (1 Low)	14 (1 Low) ^*2	31/05/2023 09:00:00
Lerwick Timeseries Graph	104 (4 Moderate)	n/m	n/m	n/m	n/m	31/05/2023 04:00:00
Strathvaich Timeseries Graph	78 (3 Low)	n/m	n/m	n/m	n/m	30/05/2023 21:00:00

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	22 (1 Low)	n/m	n/m	n/m	31/05/2023 07:00:00
Hartlepool St Abbs Walk Timeseries Graph	73 (3 Low)	7 (1 Low)	n/m	6 (1 Low)	18 (2 Low) ^*2	31/05/2023 01:00:00
Middlesbrough Timeseries Graph	63 (2 Low)	17 (1 Low)	1 (1 Low)	4 (1 Low)	16 (1 Low) ^*1	30/05/2023 12:45:00
Newcastle Centre Timeseries Graph	69 (3 Low)	28 (1 Low)	n/m	6 (1 Low)	14 (1 Low) ^*1	31/05/2023 01:00:00
Newcastle Cradlewell Roadside Timeseries Graph	n/m	29 (1 Low)	n/m	n/m	7 (1 Low) ^*1	30/05/2023 21:00:00
Stockton-on-Tees A1305 Roadside Timeseries Graph	n/m	24 (1 Low)	n/m	4 (1 Low)	n/m	31/05/2023 01:00:00
Stockton-on-Tees Eaglescliffe Timeseries Graph	n/m	26 (1 Low)	n/m	9 (1 Low)	19 (2 Low) ^*1	31/05/2023 01:00:00
Sunderland Silksworth Timeseries Graph	73 (3 Low)	11 (1 Low)	n/m	6 (1 Low)	11 (1 Low) ^*2	31/05/2023 01:00:00
Sunderland Wessington Way Timeseries Graph	n/m	6 (1 Low)	n/m	n/m	n/m	31/05/2023 09:00:00

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	78 (3 Low)	18 (1 Low)	n/m	6 (1 Low)	10 (1 Low) ^*2	31/05/2023 08:00:00
Aberdeen Union Street Roadside Timeseries Graph	n/m	49 (1 Low)	n/m	n/m	n/m	31/05/2023 08:00:00
Aberdeen Wellington Road Timeseries Graph	n/m	89 (2 Low)	n/m	n/m	n/m	31/05/2023 09:00:00
Dundee Mains Loan Timeseries Graph	n/m	12 (1 Low)	n/m	n/m	n/m	30/05/2023 12:00:00

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	75 (3 Low)	5 (1 Low)	n/m	n/m	n/m	30/05/2023 18:00:00
Wrexham Timeseries Graph	n/m	24 (1 Low)	6 (1 Low)	11 (1 Low)	19 (2 Low) ^*2	30/05/2023 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	27 (1 Low)	n/m	n/m	n/m	31/05/2023 09:00:00
Blackburn Accrington Road Timeseries Graph	n/m	10 (1 Low)	n/m	n/m	n/m	30/05/2023 22:00:00
Blackpool Marton Timeseries Graph	79 (3 Low)	9 (1 Low)	n/m	8 (1 Low)	14 (1 Low) ^*2	31/05/2023 01:00:00
Bury Whitefield Roadside Timeseries Graph	n/m	7 (1 Low)	n/m	n/m	15 (1 Low) ^*1	30/05/2023 11:00:00
Carlisle Morton A595 Timeseries Graph	n/m	8 (1 Low)	n/m	9 (1 Low)	13 (1 Low) ^*1	31/05/2023 05:00:00
Crewe Coppenhall Timeseries Graph	77 (3 Low)	10 (1 Low)	n/m	14 (2 Low)	21 (2 Low) ^*2	31/05/2023 05:00:00
Glazebury Timeseries Graph	60 (2 Low)	8 (1 Low)	n/m	7 (1 Low)	13 (1 Low) ^*2	31/05/2023 01:00:00
Liverpool Speke Timeseries Graph	76 (3 Low)	18 (1 Low)	1 (1 Low)	9 (1 Low)	23 (2 Low) ^*1	30/05/2023 23:30:00
Manchester Piccadilly Timeseries Graph	65 (2 Low)	28 (1 Low)	2 (1 Low)	11 (1 Low)	19 (2 Low) ^*2	30/05/2023 14:15:00
Manchester Sharston Timeseries Graph	74 (3 Low)	7 (1 Low)	n/m	n/m	n/m	30/05/2023 21:00:00
Preston Timeseries Graph	80 (3 Low)	9 (1 Low)	n/m	8 (1 Low)	15 (1 Low) ^*2	31/05/2023 01:00:00
Salford Eccles Timeseries Graph	71 (3 Low)	21 (1 Low)	n/m	11 (1 Low)	28 (2 Low) ^*2	31/05/2023 03:00:00
Shaw Crompton Way Timeseries Graph	n/m	n/a	n/m	n/m	n/m	26/05/2023 16:00:00
St Helens Linkway Timeseries Graph	n/m	12 (1 Low)	n/m	n/m	18 (2 Low) ^*1	30/05/2023 18:00:00
Warrington Timeseries Graph	n/m	16 (1 Low)	n/m	8 (1 Low)	21 (2 Low) ^*1	31/05/2023 02:00:00
Widnes Milton Road Timeseries Graph	n/m	33 (1 Low)	n/m	n/m	n/m	30/05/2023 18:00:00
Wigan Centre Timeseries Graph	85 (3 Low)	7 (1 Low)	n/m	8 (1 Low)	14 (1 Low) ^*2	31/05/2023 01:00:00
Wirral Tranmere Timeseries Graph	82 (3 Low)	24 (1 Low)	n/m	8 (1 Low)	17 (2 Low) ^*2	31/05/2023 01:00:00

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	40 (1 Low)	n/m	n/m	22 (2 Low) ^*1	30/05/2023 12:00:00
Ballymena Antrim Road Timeseries Graph	n/m	18 (1 Low)	n/m	n/m	n/m	30/05/2023 10:00:00
Ballymena Ballykeel Timeseries Graph	n/m	12 (1 Low)	1 (1 Low)	n/m	n/m	30/05/2023 09:15:00
Belfast Centre Timeseries Graph	76 (3 Low)	49 (1 Low)	8 (1 Low)	11 (1 Low)	25 (2 Low) ^*2	30/05/2023 16:30:00
Belfast Stockman's Lane Timeseries Graph	n/m	77 (2 Low)	n/m	n/m	33 (2 Low) ^*1	30/05/2023 23:00:00
Derry Rosemount Timeseries Graph	69 (3 Low)	22 (1 Low)	11 (1 Low)	8 (1 Low)	9 (1 Low) ^*1	30/05/2023 09:15:00
Lough Navar Timeseries Graph	105 (4 Moderate)	n/m	n/m	5 (1 Low)	8 (1 Low) ^*2	31/05/2023 08:00:00

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	61 (1 Low)	n/m	n/m	n/m	30/05/2023 21:00:00
Eskdalemuir Timeseries Graph	68 (3 Low)	n/a	n/m	n/m	n/m	30/05/2023 14:00:00
Peebles Timeseries Graph	96 (3 Low)	4 (1 Low)	n/m	n/m	n/m	30/05/2023 20:00:00

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)	6 (1 Low)	n/m	8 (1 Low)	n/m	31/05/2023 01:00:00
Canterbury Timeseries Graph	90 (3 Low)	3 (1 Low)	n/m	6 (1 Low)	13 (1 Low) ^*2	31/05/2023 01:00:00
Chatham Roadside Timeseries Graph	n/m	14 (1 Low)	n/m	4 (1 Low)	20 (2 Low) ^*1	31/05/2023 01:00:00
Chilbolton Observatory Timeseries Graph	87 (3 Low)	4 (1 Low)	1 (1 Low)	7 (1 Low)	13 (1 Low) ^*2	30/05/2023 12:15:00
Eastbourne Timeseries Graph	n/m	11 (1 Low)	n/m	6 (1 Low)	11 (1 Low) ^*2	31/05/2023 01:00:00
Horley Timeseries Graph	n/m	6 (1 Low)	n/m	n/m	n/m	31/05/2023 09:00:00
Lullington Heath Timeseries Graph	85 (3 Low)	2 (1 Low)	2 (1 Low)	6 (1 Low)	12 (1 Low) ^*2	31/05/2023 02:30:00
Milton Keynes Civic Centre Timeseries Graph	n/m	n/m	n/m	6 (1 Low)	11 (1 Low) ^*2	31/05/2023 01:00:00
Oxford Centre Roadside Timeseries Graph	n/m	49 (1 Low)	n/m	n/m	n/m	30/05/2023 12:00:00
Oxford St Ebbes Timeseries Graph	80 (3 Low)	6 (1 Low)	n/m	6 (1 Low)	12 (1 Low) ^*2	31/05/2023 01:00:00
Portsmouth Timeseries Graph	86 (3 Low)	13 (1 Low)	n/m	9 (1 Low)	19 (2 Low) ^*2	31/05/2023 01:00:00
Portsmouth Anglesea Road Timeseries Graph	n/m	18 (1 Low)	n/m	n/m	22 (2 Low) ^*1	30/05/2023 18:00:00
Reading London Road Timeseries Graph	n/m	28 (1 Low)	n/m	n/m	18 (2 Low) ^*1	31/05/2023 08:00:00
Reading New Town Timeseries Graph	79 (3 Low)	8 (1 Low)	n/m	6 (1 Low)	11 (1 Low) ^*2	31/05/2023 01:00:00
Rochester Stoke Timeseries Graph	86 (3 Low)	3 (1 Low)	1 (1 Low)	7 (1 Low)	13 (1 Low) ^*2	30/05/2023 14:00:00
Southampton A33 Timeseries Graph	n/m	6 (1 Low)	n/m	n/m	15 (1 Low) ^*1	30/05/2023 10:00:00
Southampton Centre Timeseries Graph	84 (3 Low)	9 (1 Low)	1 (1 Low)	8 (1 Low)	16 (1 Low) ^*2	30/05/2023 17:45:00
Storrington Roadside Timeseries Graph	n/m	41 (1 Low)	n/m	n/m	n/m	31/05/2023 08:00:00
Worthing A27 Roadside Timeseries Graph	n/m	16 (1 Low)	n/m	8 (1 Low)	n/m	31/05/2023 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	87 (3 Low)	11 (1 Low)	4 (1 Low)	14 (2 Low)	24 (2 Low) ^*1	30/05/2023 24:15:
Cardiff Newport Road Timeseries Graph	n/m	17 (1 Low)	n/m	n/m	19 (2 Low) ^*1	30/05/2023 23:00:00
Chepstow A48 Timeseries Graph	n/m	26 (1 Low)	n/m	9 (1 Low)	21 (2 Low) ^*1	31/05/2023 01:00:00
Cwmbran Crownbridge Timeseries Graph	83 (3 Low)	6 (1 Low)	n/m	n/m	n/m	30/05/2023 18:00:00
Hafod-yr-ynys Roadside Timeseries Graph	n/m	57 (1 Low)	n/m	n/m	n/m	31/05/2023 09:00:00
Narberth Timeseries Graph	90 (3 Low)	5 (1 Low)	1 (1 Low)	8 (1 Low)	14 (1 Low) ^*2	30/05/2023 23:30:00
Newport Timeseries Graph	n/m	16 (1 Low)	n/m	8 (1 Low)	17 (2 Low) ^*2	31/05/2023 01:00:00
Port Talbot Margam Timeseries Graph	88 (3 Low)	18 (1 Low)	9 (1 Low)	12 (2 Low)	31 (2 Low) ^*3	30/05/2023 15:00:00
Swansea Roadside Timeseries Graph	n/m	32 (1 Low)	n/m	9 (1 Low)	18 (2 Low) ^*1	31/05/2023 04:00:00

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	n/a	19 (2 Low) ^*1	30/05/2023 01:00:00
Bath A4 Roadside Timeseries Graph	n/m	22 (1 Low)	n/m	n/m	n/m	30/05/2023 14:00:00
Bournemouth Timeseries Graph	99 (3 Low)	7 (1 Low)	n/m	9 (1 Low)	n/m	31/05/2023 01:00:00
Bristol St Paul's Timeseries Graph	83 (3 Low)	7 (1 Low)	n/m	7 (1 Low)	24 (2 Low) ^*1	31/05/2023 01:00:00
Bristol Temple Way Timeseries Graph	n/m	23 (1 Low)	n/m	n/m	26 (2 Low) ^*1	30/05/2023 18:00:00
Charlton Mackrell Timeseries Graph	89 (3 Low)	3 (1 Low)	n/m	7 (1 Low)	15 (1 Low) ^*2	31/05/2023 01:00:00
Christchurch Barrack Road Timeseries Graph	n/m	30 (1 Low)	n/m	8 (1 Low)	n/m	31/05/2023 01:00:00
Exeter Roadside Timeseries Graph	49 (2 Low)	25 (1 Low)	n/m	n/m	n/m	30/05/2023 04:00:00
Honiton Timeseries Graph	88 (3 Low)	10 (1 Low)	n/m	8 (1 Low)	16 (1 Low) ^*2	31/05/2023 01:00:00
Plymouth Centre Timeseries Graph	87 (3 Low)	16 (1 Low)	n/m	8 (1 Low)	18 (2 Low) ^*2	31/05/2023 03:00:00
Plymouth Tavistock Road Timeseries Graph	n/m	18 (1 Low)	n/m	n/m	n/m	30/05/2023 18:00:00
Saltash Callington Road Timeseries Graph	n/m	n/m	n/m	6 (1 Low)	17 (2 Low) ^*1	31/05/2023 07:00:00
Swindon Walcot Timeseries Graph	80 (3 Low)	7 (1 Low)	n/m	7 (1 Low)	14 (1 Low) ^*2	31/05/2023 01:00:00
Yarner Wood Timeseries Graph	102 (4 Moderate)	4 (1 Low)	n/m	7 (1 Low)	13 (1 Low) ^*2	31/05/2023 03:00:00

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	95 (3 Low)	n/m	n/m	n/m	n/m	30/05/2023 19:00:00

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	68 (3 Low)	16 (1 Low)	n/m	9 (1 Low)	20 (2 Low) ^*2	31/05/2023 01:00:00
Birmingham Ladywood Timeseries Graph	74 (3 Low)	10 (1 Low)	1 (1 Low)	9 (1 Low)	16 (1 Low) ^*2	31/05/2023 04:15:00
Burton-on-Trent Horninglow Timeseries Graph	64 (2 Low)	16 (1 Low)	n/m	9 (1 Low)	16 (1 Low) ^*2	31/05/2023 01:00:00
Cannock A5190 Roadside Timeseries Graph	n/m	16 (1 Low)	n/m	n/m	n/m	30/05/2023 18:00:00
Coventry Allesley Timeseries Graph	73 (3 Low)	6 (1 Low)	n/m	7 (1 Low)	13 (1 Low) ^*2	31/05/2023 01:00:00
Coventry Binley Road Timeseries Graph	n/m	19 (1 Low)	n/m	n/m	14 (1 Low) ^*1	30/05/2023 18:00:00
Leamington Spa Timeseries Graph	81 (3 Low)	6 (1 Low)	n/m	6 (1 Low)	12 (1 Low) ^*2	31/05/2023 01:00:00
Leamington Spa Rugby Road Timeseries Graph	n/m	13 (1 Low)	n/m	6 (1 Low)	11 (1 Low) ^*2	31/05/2023 01:00:00
Leominster Timeseries Graph	84 (3 Low)	10 (1 Low)	n/m	n/m	n/m	30/05/2023 17:00:00
Oldbury Birmingham Road Timeseries Graph	n/m	19 (1 Low)	n/m	n/m	n/m	31/05/2023 08:00:00
Stoke-on-Trent A50 Roadside Timeseries Graph	n/m	51 (1 Low)	n/m	n/m	23 (2 Low) ^*1	30/05/2023 14:00:00
Stoke-on-Trent Centre Timeseries Graph	70 (3 Low)	11 (1 Low)	n/m	10 (1 Low)	17 (2 Low) ^*2	31/05/2023 01:00:00
Telford Hollinswood Timeseries Graph	74 (3 Low)	12 (1 Low)	n/m	9 (1 Low)	16 (1 Low) ^*2	31/05/2023 03:00:00
Walsall Woodlands Timeseries Graph	76 (3 Low)	10 (1 Low)	n/m	n/m	n/m	31/05/2023 02:00:00
West Bromwich Kenrick Park Timeseries Graph	66 (2 Low)	13 (1 Low)	n/m	n/m	n/m	31/05/2023 06:00:00

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	80 (3 Low)	9 (1 Low)	4 (1 Low)	8 (1 Low)	15 (1 Low) ^*2	30/05/2023 19:15:00
Bradford Mayo Avenue Timeseries Graph	n/m	55 (1 Low)	n/m	n/m	n/m	30/05/2023 16:00:00
Dewsbury Ashworth Grove Timeseries Graph	82 (3 Low)	13 (1 Low)	n/m	8 (1 Low)	14 (1 Low) ^*2	31/05/2023 01:00:00
Doncaster A630 Cleveland Street Timeseries Graph	n/m	32 (1 Low)	n/m	n/m	n/m	30/05/2023 13:00:00
High Muffles Timeseries Graph	79 (3 Low)	1 (1 Low)	n/m	5 (1 Low)	8 (1 Low) ^*2	31/05/2023 01:00:00
Hull Freetown Timeseries Graph	79 (3 Low)	14 (1 Low)	2 (1 Low)	6 (1 Low)	15 (1 Low) ^*2	30/05/2023 09:15:00
Hull Holderness Road Timeseries Graph	n/m	19 (1 Low)	n/m	n/m	16 (1 Low) ^*1	30/05/2023 11:00:00
Immingham Woodlands Avenue Timeseries Graph	71 (3 Low)	14 (1 Low)	n/m	7 (1 Low)	23 (2 Low) ^*2	31/05/2023 01:00:00
Leeds Centre Timeseries Graph	76 (3 Low)	13 (1 Low)	2 (1 Low)	7 (1 Low)	13 (1 Low) ^*2	30/05/2023 17:45:00
Leeds Headingley Kerbside Timeseries Graph	n/m	36 (1 Low)	n/m	7 (1 Low)	22 (2 Low) ^*1	31/05/2023 01:00:00
Scunthorpe Town Timeseries Graph	n/m	9 (1 Low)	1 (1 Low)	n/m	18 (2 Low) ^*1	30/05/2023 09:15:00
Sheffield Barnsley Road Timeseries Graph	n/m	50 (1 Low)	n/m	9 (1 Low)	n/m	31/05/2023 01:00:00
Sheffield Devonshire Green Timeseries Graph	76 (3 Low)	20 (1 Low)	n/m	9 (1 Low)	16 (1 Low) ^*2	31/05/2023 01:00:00
Sheffield Tinsley Timeseries Graph	72 (3 Low)	12 (1 Low)	n/m	8 (1 Low)	17 (2 Low) ^*2	31/05/2023 01:00:00
York Bootham Timeseries Graph	75 (3 Low)	5 (1 Low)	n/m	6 (1 Low)	14 (1 Low) ^*1	31/05/2023 01:00:00
York Fishergate Timeseries Graph	n/m	26 (1 Low)	n/m	5 (1 Low)	17 (2 Low) ^*1	31/05/2023 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