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Air Quality History for Johnston, United States

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

26
Current AQI
Good CAMS model
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

212h

PM2.5 Station

212h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-05-30 42 42–42 10.1 µg/m³ 1h 1
2026-05-29 40 11–87 11.4 µg/m³ 8h 1
2026-05-28 39 18–72 10.1 µg/m³ 11h 1
2026-05-27 65 35–157 19.8 µg/m³ 11h 1
2026-05-26 41 15–102 11.0 µg/m³ 10h 1
2026-05-25 52 25–124 15.0 µg/m³ 12h 1
2026-05-24 33 20–50 7.8 µg/m³ 10h 1
2026-05-23 34 9–89 9.4 µg/m³ 7h 1
2026-05-22 33 17–80 8.9 µg/m³ 10h 1
2026-05-21 31 15–59 7.8 µg/m³ 7h 1
2026-05-20 35 3–95 10.0 µg/m³ 11h 1
2026-05-19 31 15–50 7.4 µg/m³ 10h 1
2026-05-18 39 7–85 11.2 µg/m³ 12h 1
2026-05-17 46 5–93 13.2 µg/m³ 17h 1
2026-05-16 39 16–89 10.3 µg/m³ 9h 1
2026-05-15 34 13–53 8.3 µg/m³ 12h 1
2026-05-14 55 13–127 16.9 µg/m³ 10h 1
2026-05-13 49 20–114 13.8 µg/m³ 14h 1
2026-05-12 53 8–132 15.3 µg/m³ 12h 1
2026-05-11 55 2–109 17.6 µg/m³ 11h 1
2026-05-10 58 5–102 19.0 µg/m³ 7h 1
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