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Air Quality History for McHenry, United States

Historical PM2.5 and AQI trend from monitoring stations near McHenry, United States.

38
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

336h

PM2.5 Station

336h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-06-09 21 17–25 5.0 µg/m³ 1.0 9h 65
2026-06-08 44 32–55 10.6 µg/m³ 3.9 24h 84
2026-06-07 27 20–36 6.5 µg/m³ 2.2 24h 84
2026-06-06 41 24–53 9.8 µg/m³ — 24h 80
2026-06-05 51 42–55 12.6 µg/m³ 1.2 24h 83
2026-06-04 38 29–48 9.0 µg/m³ 4.0 24h 85
2026-06-03 27 23–30 6.5 µg/m³ 1.8 24h 85
2026-06-02 22 21–24 5.3 µg/m³ 1.1 24h 84
2026-06-01 26 20–50 6.3 µg/m³ — 24h 75
2026-05-31 23 20–30 5.5 µg/m³ 1.0 24h 84
2026-05-30 41 20–69 10.7 µg/m³ 8.6 24h 85
2026-05-29 25 17–34 6.0 µg/m³ 1.4 24h 84
2026-05-28 26 20–44 6.1 µg/m³ 2.3 24h 77
2026-05-27 42 27–59 10.4 µg/m³ 10.2 24h 84
2026-05-26 29 26–34 6.9 µg/m³ 2.6 15h 84
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