Advisories:
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| County | Site | Units | 24-Hour | Hour Of Day | 1 Hour | Hour Of Day |
|---|---|---|---|---|---|---|
| SW England | Bath A4 Roadside AURN | µg/m³ | ||||
| NIRE | Belfast Centre AURN | µg/m³ | 13.4 | 08 AM | 26 | 02 AM |
| NW England | Birkenhead Borough Road AURN | µg/m³ | ||||
| NE England | Bradford Keighley | µg/m³ | ||||
| NE England | Bradford Tong Street | µg/m³ | ||||
| NE England | Bradford Treadwell Mills | µg/m³ | ||||
| SW England | Bristol St Paul's AURN | µg/m³ | 18.9 | 08 PM | 29 | 01 AM |
| Midlands | Cannock A5190 Roadside AURN | µg/m³ | ||||
| SE England | Chatham Roadside AURN | µg/m³ | 40.3 | 03 AM | 82 | 03 AM |
| East Anglia | Great Yarmouth South Denes | µg/m³ | 29.7 | 06 AM | 30 | 01 AM |
| NE England | Hull Freetown AURN | µg/m³ | 31.5 | 06 AM | 48 | 01 AM |
| NE England | Hull Holderness Road AURN | µg/m³ | ||||
| NE England | Immingham Woodlands Avenue AURN | µg/m³ | ||||
| East Anglia | King's Lynn Estuary Close | µg/m³ | ||||
| East Anglia | Kings Lynn Page Stair Lane | µg/m³ | ||||
| East Anglia | King's Lynn Stoke Ferry Buckenham Drive CLOSED | µg/m³ | 5.7 | 12 AM | 13 | 08 PM |
| East Anglia | Kings Lynn Stoke Ferry Wretton Road | µg/m³ | 8.8 | 12 AM | 17 | 08 PM |
| NW England | Lancaster Cable Street | µg/m³ | ||||
| Midlands | Leicester University AURN | µg/m³ | 16 | 06 PM | 27 | 10 AM |
| NIRE | Lisburn Dunmurry Seymour Hill | µg/m³ | ||||
| NIRE | Lisburn Dunmurry Seymour Hill PM2.5 | µg/m³ | ||||
| NW England | Liverpool Speke AURN | µg/m³ | ||||
| SE England | London Bexley AURN | µg/m³ | 33.4 | 02 AM | 58 | 01 AM |
| WEST | London Haringey Roadside AURN | µg/m³ | ||||
| SE England | Maidstone Upper Stone Street CLOSED | µg/m³ | 41 | 05 AM | 82 | 03 AM |
| NE England | Newcastle Centre AURN | µg/m³ | 20.9 | 02 AM | 26 | 01 AM |
| NIRE | North Down Holywood A2 | µg/m³ | ||||
| NE England | North Lincs Santon | µg/m³ | ||||
| East Anglia | Norwich Castle Meadow CLOSED | µg/m³ | 16 | 02 PM | 19 | 12 PM |
| East Anglia | Norwich Lakenfields AURN | µg/m³ | 19.8 | 02 PM | 30 | 01 AM |
| Midlands | Nottingham Centre AURN CLOSED | µg/m³ | 17.7 | 05 PM | 29 | 09 AM |
| Midlands | Nottingham Western Boulevard AURN | µg/m³ | ||||
| Midlands | Oadby Zephyr | µg/m³ | ||||
| Midlands | Oxford St Ebbes AURN | µg/m³ | 14.6 | 04 AM | 25 | 09 AM |
| SE England | Portsmouth Anglesea Road AURN | µg/m³ | ||||
| SE England | Portsmouth AURN | µg/m³ | ||||
| NW England | Preston AURN | µg/m³ | 15.5 | 07 AM | 21 | 01 AM |
| SE England | Reading New Town AURN | µg/m³ | 21.6 | 01 AM | 23 | 07 AM |
| Herts & Beds | Sandy Roadside AURN CLOSED | µg/m³ | ||||
| NE England | Scunthorpe East Common Lane Osiris | µg/m³ | 3.6 | 12 AM | 7 | 02 PM |
| NE England | South Tyneside Edinburgh Road | µg/m³ | ||||
| SE England | Southampton A33 AURN | µg/m³ | ||||
| SE England | Southampton Centre AURN | µg/m³ | 14.9 | 06 AM | 20 | 08 AM |
| SE England | Stanford-le-Hope Roadside AURN | µg/m³ | 43.8 | 02 AM | 71 | 01 AM |
| Midlands | Stoke-on-Trent A50 Roadside AURN | µg/m³ | ||||
| Midlands | Stoke-on-Trent Centre AURN | µg/m³ | 15.3 | 01 PM | 27 | 06 AM |
| NE England | Sunderland Silksworth AURN CLOSED | µg/m³ | 18.8 | 01 AM | 22 | 01 AM |
| NE England | Sunderland Wessington Way AURN | µg/m³ | ||||
| SE England | Swale St Pauls Street CLOSED | µg/m³ | 46.3 | 04 AM | 86 | 03 AM |
| None | Telford Hollinswood AURN | µg/m³ | ||||
| NW England | Warrington AURN | µg/m³ | 18 | 12 PM | 25 | 07 AM |
| SE England | Winchester St Georges Street | µg/m³ | 18.7 | 05 AM | 20 | 09 AM |
| NW England | Wirral Tranmere AURN | µg/m³ | 15.2 | 01 AM | 21 | 09 AM |
| Wales | Wrexham AURN | µg/m³ | 16.7 | 05 PM | 32.1 | 11 AM |
| NE England | York Bootham AURN | µg/m³ | 17.2 | 06 AM | 28 | 01 AM |
| NE England | York Fishergate AURN | µg/m³ | 18.6 | 06 AM | 32 | 01 AM |
