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County Site Units 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
East Anglia Norwich Lakenfields AURN µg/m³ 38 35.3 33.8 33.1 31.4 31.2 32.3 33.8 35.6 38.4 41.2 44 48.9 53.8 57.7 60.7 63.1 64.3 64.4 63.6 61.4 58.3 53.7 47.2
East Anglia Weybourne AURN µg/m³ 38.9 39 38.9 38.6 37.5 36.8 36.9 37.8 38.6 39.5 40.5 42.2 45 48.1 51.7 54.7 56.4 56.7 56.9 57 57.7 58.4 59 57.9
London London Haringey Priory Park South AURN µg/m³ 27.2 27.4 27.6 28.4 28.9 29.7 28.7 28.3 28.4 29.6 31.7 34.4 38.8 43.5 47.5 51.2 55 57.9 59.1 59.6 58.4 56.2 52.9 47.3
Midlands Leicester University AURN µg/m³ 40.5 40.2 39.9 39.8 38.7 37 34.6 33.8 34.3 35 36.3 38.1 41.4 45.8 49.7 52.7 54.4 55 54.7 53.1 50.5 46.4 42.4 38.5
Midlands Stoke-on-Trent Centre AURN µg/m³ 50.7 49.8 48.3 46.6 43.7 40.8 39 37.4 36.2 35.9 36 37.2 39.4 41.6 43.5 45.4 46.8 47.5 48.8 49.2 49.3 49.1 48 46.4
NE England Bradford Apperley Bridge Marina Zephyr µg/m³ 53.8 52.9 52.5 51.3 50 47.7 44.9 41.9 41.3 41.3 41.4 43.2 46.1 49.7 54.5 60.1 63.4 65.5 68.3 69.6 69.1 65.7 59.9 51.8
NE England Bradford Cavendish Prim Sch Hall Rd Zephyr µg/m³ 54.3 53 52.1 50.7 49.3 47.5 46.5 44.7 44 43.8 43.4 44.9 48.3 51.1 54.6 58.5 62.2 64.8 67.7 68.8 67.9 66.4 63.5 59.2
NE England Bradford East Bowling Flockton Grove Zephyr µg/m³ 45.7 43.5 41.2 39.7 38.8 37.7 36.1 35.9 36.9 39.2 42.4 46.3 50.9 55.9 61.4 65.7 68.1 70.3 71.8 71.8 69.6 64.6 57.8 51.6
NE England Bradford Farfield Prim Sch Reevy Cres Zephyr µg/m³ 40.9 38.8 36.9 35.3 33.4 31.9 29.8 28.1 28.3 29.6 31 33.6 37.4 40.8 45 49.7 52.6 54.9 57.5 58.5 58 56.9 55.1 51.5
NE England Bradford Girlington St Leonards Road Zephyr µg/m³ 48.9 48 47.7 46.8 46.7 46.2 45.4 42.3 42.3 42.9 42.3 44.6 47.4 49.1 52.4 57.4 59.5 61.1 63.2 62.9 59.1 55.1 49.6 43.3
NE England Bradford Gt Horton All Saints Prim Sch Zephyr µg/m³ 44.4 43.3 42.9 42.3 42.1 41.3 39.7 38.9 38.4 38.8 39.7 42.1 45.8 49.3 53.5 57.2 60.4 62.6 64.1 63.4 59.4 54.8 49.1 42.9
NE England Bradford Horton Aberdeen Place Zephyr µg/m³ 48 47.1 46.5 46.1 45.5 45.6 44.1 43.2 44.8 47.2 49.8 53.8 58.9 63.4 68.4 72.5 74.3 75.4 75.5 73.5 68.8 62.6 56.8 52.1
NE England Bradford Ilkley Grove Road Zephyr µg/m³ 41.9 40.8 39.7 38.5 36.9 35.6 34.7 32.9 30.7 29.6 28.8 30.4 33.7 36.6 40.3 44.9 49.4 53.4 57.2 58.5 58 56.2 52.7 47.9
NE England Bradford Keighley Zephyr µg/m³ 37.3 38.3 38.8 39.9 39.4 37.8 37.2 36.6 35 33.8 33.7 34.1 35.6 38.3 41.1 43.3 44.9 46.5 47.3 47.7 46 43.3 39.2 35.2
NE England Bradford Low Moor First Street Zephyr µg/m³ 35.8 33.5 31.3 29.7 28.1 26.4 24.5 23.3 23.3 24.7 26.4 29.1 32.8 36.6 40.7 44.8 47.6 49.8 52.3 53 51.1 48.7 43.5 37.6
NE England Bradford Saltaire Titus Street Zephyr µg/m³ 44.9 44.7 44.4 43.8 43.1 41.3 39.9 38.2 37 36 35.5 36.2 38.5 41.2 44.3 48.1 50.9 53.4 56.1 58.2 57.6 55.9 52.8 48.4
NE England Bradford Silsden Hothfield Street Zephyr µg/m³ 33.2 32.7 32.3 31.9 30.7 28.9 27.3 25.8 24.4 23.6 23.7 24.5 26.8 29.7 33.3 36.6 39.4 41.8 44.6 45.8 45.2 43.2 39.2 34.5
NE England Hull Freetown AURN µg/m³ 45.5 40.6 36.9 33.9 31.9 30.8 30.2 30.4 30.6 32.8 35.2 38.3 41.8 45.7 49.5 53.1 56.3 58.9 60.7 61.3 60.5 57.7 52.6 47
NE England Newcastle Centre AURN µg/m³ 42.5 43.5 42.6 40.4 38 35.6 34 32.4 31.2 30.6 32.3 34.7 36.8 39.4 41.2 42.2 42.3 41.8 42.5 43.1 43.3 41.9 39.4 37.5
NE England Sunderland Silksworth AURN µg/m³ 50.9 51.1 51.3 50.9 50.1 48.2 45.1 41.9 40.1 38.7 37.5 36.9 36.4 36.2 36.6 37.5 38.1 39 40.2 41.2 41 40.6 42.1 43.1
NIRE Belfast Centre AURN µg/m³ 34.9 32.7 31.4 31.3 31.5 29.3 26.4 25.3 26.2 28.4 31 34.2 37 40.2 44.6 47.8 49.4 50.1 50.1 49.6 50 48.1 44.1 40.4
NW England Liverpool Speke AURN µg/m³ 49.8 49.6 48.7 46.8 44.9 42.7 40.7 39.9 40 40.3 41.2 42.3 44 45.4 46.5 47.8 49.2 50 50.8 51.2 51.3 51.6 51.4 50.2
NW England Nottingham Kenmore Gardens AURN µg/m³ 49 48 45 42 39 36 33 32 31 33 35 38 42 46 49 52 54 55 55 55 52 49 44 40
NW England Preston AURN µg/m³ 44.1 44.1 43.6 42.4 41 39.7 38.2 37.2 36.4 36.8 37.6 39 41 43 44.8 46.6 48.1 48.9 49.5 49.8 49 47.2 43.7 41.2
NW England Wirral Tranmere AURN µg/m³ 48.8 49.2 48.4 47.2 45.7 43.7 41.6 40.6 39.8 39.7 40.5 41.7 42.8 44.1 46 48 49.6 51.1 51.7 51.7 51.4 51.2 49.9 48.4
SE England Canterbury AURN CLOSED µg/m³ 34.6 33.4 32.7 31.3 30.2 30 30.9 33.2 36.5 38.9 41.5 45.3 49.6 53.7 57.3 59.8 61.3 62.1 61.8 60.6 58.4 55.6 52.5 48.6
SE England Portsmouth AURN µg/m³ 27.9 29.6 30.6 30.4 29.4 29.2 29.7 29.8 30.7 32.4 34.6 36.9 40.4 43 44.8 45.8 47.2 47.9 48.8 49.2 49.1 48.7 47.4 45.6
SE England Reading New Town AURN µg/m³ 24.8 24.6 24.6 25 23.6 21.2 20 19.3 20.7 23 25.9 29.5 34.5 39.2 43.3 47.1 50 52.3 53.4 52.9 51.3 48.2 44.4 40.7
SE England Rochester Stoke AURN µg/m³ 33.9 32.6 30.9 30.1 29.8 30.3 32.7 34.6 35.5 38.5 42.3 46.4 50.9 55.5 59.2 62.9 65.8 67.5 68.2 67.2 64.5 60.7 55.6 49.5
SE England Southampton Centre AURN µg/m³ 20.5 21.1 20.5 19.5 19.2 18.3 16.5 15.8 16.8 18.6 21.5 25.5 29.6 33.5 37 39.3 41 41.9 42 42.2 40.9 39.3 37 33.4
SE England Thurrock AURN µg/m³ 31.8 30.5 29.8 29 28.2 28.5 29.9 30.2 30.2 32.3 35 38.7 43.3 49.2 53.1 56.6 59.9 62.1 62.9 61.1 59 54.2 50.3 44.7
SW England Bristol St Paul's AURN µg/m³ 49.9 50.7 50.4 49.9 49.2 47.6 46.1 44.9 44.4 44.2 44.9 45.9 47.8 50.4 53.1 55 56.3 57.3 57.4 56.4 54.6 52.3 50.2 47.9
SW England South Glos Coldharbour Lane A4174 µg/m³ 46.9 48.2 48.2 48.3 47.3 44.3 40.9 38.9 37.3 37.1 37.8 38.7 40.7 44.4 48.5 51.2 53.4 54.5 54.7 53.5 52 50 46.9 43.6