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Air Quality History for Westfield, United States

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

17
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

478h

PM2.5 Station

478h · 3 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-05-30 21 20–22 5.0 µg/m³ 3h 8
2026-05-29 16 12–25 4.0 µg/m³ 24h 10
2026-05-28 19 13–30 4.6 µg/m³ 24h 10
2026-05-27 21 17–28 5.0 µg/m³ 24h 10
2026-05-26 19 16–25 4.6 µg/m³ 24h 10
2026-05-25 14 9–18 3.3 µg/m³ 24h 10
2026-05-24 14 8–21 3.4 µg/m³ 24h 10
2026-05-23 17 13–23 4.0 µg/m³ 24h 10
2026-05-22 15 12–21 3.7 µg/m³ 24h 10
2026-05-21 15 10–22 3.5 µg/m³ 24h 10
2026-05-20 27 14–36 6.5 µg/m³ 24h 11
2026-05-19 36 28–47 8.7 µg/m³ 24h 11
2026-05-18 31 23–39 7.4 µg/m³ 24h 10
2026-05-17 27 17–34 6.5 µg/m³ 24h 10
2026-05-16 19 13–26 4.6 µg/m³ 24h 10
2026-05-15 16 10–21 3.8 µg/m³ 24h 10
2026-05-14 18 14–25 4.3 µg/m³ 24h 11
2026-05-13 21 15–38 5.1 µg/m³ 24h 10
2026-05-12 16 11–24 3.9 µg/m³ 24h 10
2026-05-11 16 11–23 3.8 µg/m³ 24h 10
2026-05-10 26 19–38 6.1 µg/m³ 19h 10
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