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Air Quality History for Johnstown, United States

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

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

Air Quality Index Station

411h

PM2.5 Station

411h · 3 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-05-29 22 9–43 5.2 µg/m³ 17h 2
2026-05-28 30 13–45 7.1 µg/m³ 18h 2
2026-05-27 34 20–52 8.0 µg/m³ 21h 2
2026-05-26 29 20–42 7.1 µg/m³ 22h 2
2026-05-25 25 15–43 6.0 µg/m³ 20h 2
2026-05-24 26 12–41 6.1 µg/m³ 22h 2
2026-05-23 25 4–33 6.0 µg/m³ 23h 2
2026-05-22 22 6–48 5.2 µg/m³ 20h 2
2026-05-21 23 14–36 5.4 µg/m³ 23h 2
2026-05-20 31 14–51 7.5 µg/m³ 21h 2
2026-05-19 43 25–68 10.8 µg/m³ 19h 2
2026-05-18 47 27–64 11.6 µg/m³ 21h 2
2026-05-17 43 22–54 10.3 µg/m³ 22h 2
2026-05-16 27 14–90 6.9 µg/m³ 20h 2
2026-05-15 23 5–42 5.5 µg/m³ 20h 2
2026-05-14 22 13–42 5.4 µg/m³ 20h 2
2026-05-13 26 9–53 6.1 µg/m³ 21h 2
2026-05-12 21 8–32 5.0 µg/m³ 22h 2
2026-05-11 24 12–38 5.7 µg/m³ 18h 2
2026-05-10 30 10–56 7.2 µg/m³ 19h 2
2026-05-09 36 29–44 8.8 µg/m³ 2h 2
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