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Air Quality History for McHenry, United States

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

52
Current AQI
Moderate Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

337h

PM2.5 Station

337h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-05-30 32 4–60 8.7 µg/m³ 1.0 2h 1
2026-05-29 26 17–48 6.2 µg/m³ 1.4 24h 81
2026-05-28 26 19–38 6.2 µg/m³ 2.3 24h 77
2026-05-27 43 28–59 10.5 µg/m³ 10.2 24h 85
2026-05-26 31 26–43 7.4 µg/m³ 3.8 24h 85
2026-05-25 48 29–72 12.8 µg/m³ 10.3 24h 85
2026-05-24 50 37–59 12.5 µg/m³ 1.7 24h 84
2026-05-23 26 21–35 6.4 µg/m³ 1.2 24h 84
2026-05-22 22 18–25 5.2 µg/m³ — 24h 80
2026-05-21 20 15–35 4.9 µg/m³ — 24h 84
2026-05-20 18 16–24 4.3 µg/m³ — 24h 84
2026-05-19 24 17–38 5.8 µg/m³ — 24h 84
2026-05-18 43 18–52 10.3 µg/m³ 2.4 24h 85
2026-05-17 46 31–58 11.3 µg/m³ 4.0 24h 84
2026-05-16 32 25–44 7.7 µg/m³ 2.7 23h 84
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