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Air Quality History for Westmont, United States

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

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

Air Quality Index Station

478h

PM2.5 Station

478h · 280 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-10-20 53 32–70 13.9 µg/m³ 1.2 21h 244
2026-10-19 28 21–41 6.7 µg/m³ 3.4 24h 282
2026-10-18 23 17–35 5.4 µg/m³ — 24h 259
2026-10-17 16 13–23 3.9 µg/m³ 4.5 24h 282
2026-10-16 19 11–39 4.5 µg/m³ 1.1 24h 269
2026-10-15 24 14–41 5.8 µg/m³ 1.6 24h 282
2026-10-14 39 19–54 9.5 µg/m³ 2.4 24h 281
2026-10-13 34 26–50 8.2 µg/m³ 1.4 24h 280
2026-10-12 42 32–55 10.2 µg/m³ 2.0 24h 281
2026-10-11 31 28–37 7.5 µg/m³ — 24h 282
2026-10-10 30 25–41 7.1 µg/m³ — 24h 245
2026-10-09 33 24–45 7.9 µg/m³ 2.1 24h 250
2026-10-08 26 20–35 6.2 µg/m³ — 24h 272
2026-10-07 26 23–30 6.4 µg/m³ 3.2 24h 261
2026-10-06 25 20–34 5.9 µg/m³ — 24h 260
2026-10-05 28 19–36 6.7 µg/m³ 9.2 24h 273
2026-10-04 25 19–35 6.1 µg/m³ 24.6 24h 251
2026-10-03 20 15–25 4.9 µg/m³ — 24h 265
2026-10-02 16 13–18 3.9 µg/m³ — 24h 272
2026-10-01 54 23–60 14.2 µg/m³ 1.9 24h 274
2026-09-30 55 55–55 13.9 µg/m³ 3.6 1h 275
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