Air quality today and for the next five days across the UK, from Defra's monitoring network, with the official health advice. Pollution episodes and wildfire smoke raise the index.
UK air quality today
Air pollution riskNormal
Highest index nowLow3 of 10, Lerwick and 2 more
Sites at Moderate or above0of 191 reporting
Highest in the next 5 daysLow3 of 10, today
Health advice: Enjoy your usual outdoor activities.
Daily Air Quality Index, 1 (low) to 10 (very high). Status needs at least 2 sites at High or above, so one faulty monitor does not raise it. Measurements are provisional.
Hazard Watch UK
Air quality
Layers
Air quality index
Shading: the middle value for each postcode area.
Monitors
Map display
Boundaries: Office for National Statistics, OGL v3. Postcode areas are approximate.
Forecast, highest in the UK
TodayLow3 of 10
Sat 14Low3 of 10
Sun 15Low3 of 10
Mon 16Low3 of 10
Tue 17Low3 of 10
Sites by index now
1331
552
33
4
5
6
7
8
9
10
LowModerateHighVery high
191 monitoring sites. On a clean day nearly all are at 1 to 3. Wildfire smoke shows up as higher fine-particle (PM2.5) readings.
Highest sites now
3Aston HillLow
3LerwickLow
3StrathvaichLow
2Aberdeen Erroll ParkLow
2Armagh RoadsideLow
2Auchencorth MossLow
2Barnsley GawberLow
2Belfast Stockman's LaneLow
Index 1 (low) to 10 (very high), from the latest hourly measurements.
Source: © Crown 2026 copyright Defra via uk-air.defra.gov.uk, licenced under the Open Government Licence (OGL) · OGL