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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.

28
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

479h

PM2.5 Station

479h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-06-09 18 13–29 4.4 µg/m³ — 3h 3
2026-06-08 54 21–145 15.7 µg/m³ 2.3 24h 11
2026-06-07 59 25–170 18.5 µg/m³ 2.3 24h 11
2026-06-06 50 14–87 13.7 µg/m³ 2.3 24h 10
2026-06-05 68 26–169 22.0 µg/m³ 4.4 24h 10
2026-06-04 71 38–147 22.0 µg/m³ 2.9 24h 10
2026-06-03 62 32–104 17.9 µg/m³ 2.3 24h 9
2026-06-02 50 19–109 14.1 µg/m³ 1.4 24h 10
2026-06-01 44 18–120 11.7 µg/m³ 2.2 24h 9
2026-05-31 44 8–127 12.6 µg/m³ 2.3 24h 5
2026-05-30 45 27–93 12.0 µg/m³ 2.8 23h 6
2026-05-29 53 23–184 17.1 µg/m³ 2.1 24h 6
2026-05-28 50 8–88 13.5 µg/m³ 8.9 24h 6
2026-05-27 52 12–157 14.6 µg/m³ 3.7 24h 7
2026-05-26 64 29–170 19.6 µg/m³ 10.1 24h 8
2026-05-25 68 32–134 20.4 µg/m³ 4.2 24h 9
2026-05-24 48 17–89 13.1 µg/m³ 5.3 24h 7
2026-05-23 59 17–123 17.6 µg/m³ 4.5 24h 7
2026-05-22 54 17–124 15.1 µg/m³ 7.0 24h 7
2026-05-21 62 19–260 23.1 µg/m³ 4.0 24h 8
2026-05-20 50 19–98 13.6 µg/m³ 2.9 21h 6
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