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Air Quality History for Johnstown, United States

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

31
Current AQI
Good CAMS model
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

381h

PM2.5 Station

381h · 2 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-06-09 27 14–40 6.4 µg/m³ 12h 2
2026-06-08 33 21–55 8.0 µg/m³ 18h 2
2026-06-07 31 18–39 7.4 µg/m³ 20h 2
2026-06-06 44 17–63 10.7 µg/m³ 20h 1
2026-06-05 40 20–51 9.7 µg/m³ 18h 1
2026-06-04 40 17–72 10.0 µg/m³ 21h 1
2026-06-03 31 19–42 7.4 µg/m³ 19h 2
2026-06-02 31 10–64 7.5 µg/m³ 21h 1
2026-06-01 29 12–39 6.9 µg/m³ 21h 2
2026-05-31 26 12–42 6.3 µg/m³ 16h 2
2026-05-30 25 6–43 5.9 µg/m³ 18h 1
2026-05-29 21 12–38 5.1 µg/m³ 16h 2
2026-05-28 29 12–70 7.2 µg/m³ 19h 1
2026-05-27 33 19–67 8.1 µg/m³ 22h 1
2026-05-26 28 13–40 6.7 µg/m³ 21h 2
2026-05-25 23 11–49 5.5 µg/m³ 17h 1
2026-05-24 26 7–42 6.1 µg/m³ 18h 2
2026-05-23 26 4–40 6.2 µg/m³ 21h 2
2026-05-22 24 7–47 5.8 µg/m³ 18h 1
2026-05-21 25 10–56 6.1 µg/m³ 20h 1
2026-05-20 19 13–29 4.5 µg/m³ 5h 1
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