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Air Quality History for St Helens, United Kingdom

Historical PM2.5 and AQI trend from monitoring stations near St Helens, United Kingdom.

29
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

477h

PM2.5 Station

477h · 4 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-08-08 44 30–52 10.6 µg/m³ 3.7 4h 8
2026-08-07 37 4–53 8.9 µg/m³ 1.1 24h 7
2026-08-06 39 18–66 9.8 µg/m³ 1.5 24h 8
2026-08-05 40 18–68 10.0 µg/m³ 1.7 24h 6
2026-08-04 51 23–135 13.6 µg/m³ 26.8 24h 7
2026-08-03 43 15–76 11.2 µg/m³ 4.8 24h 8
2026-08-02 34 12–57 8.2 µg/m³ 3.2 24h 7
2026-08-01 35 10–64 8.7 µg/m³ 2.1 24h 7
2026-07-31 38 6–63 9.5 µg/m³ 1.8 24h 7
2026-07-30 37 16–106 9.5 µg/m³ 4.8 24h 7
2026-07-29 42 13–77 10.9 µg/m³ 3.7 24h 7
2026-07-28 41 13–78 10.5 µg/m³ 2.8 24h 7
2026-07-27 39 19–122 10.1 µg/m³ 3.2 24h 6
2026-07-26 46 9–108 12.8 µg/m³ 12.4 24h 6
2026-07-25 38 18–71 9.3 µg/m³ 7.7 24h 8
2026-07-24 38 15–87 9.7 µg/m³ 2.7 24h 7
2026-07-23 49 13–243 17.6 µg/m³ 4.7 24h 8
2026-07-22 40 24–80 9.9 µg/m³ 6.7 24h 8
2026-07-21 38 19–91 9.8 µg/m³ 6.0 24h 8
2026-07-20 34 19–81 8.8 µg/m³ 4.2 24h 8
2026-07-19 36 23–65 8.8 µg/m³ 3.8 17h 8
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