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Air Quality History for Placentia, United States

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

20
Current AQI
Good Station

Air Quality Index Station

334h

PM2.5 Station

334h · 2 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-07-21 35 9–42 8.4 µg/m³ 4.1 23h 118
2026-07-20 47 28–54 11.5 µg/m³ 7.1 24h 119
2026-07-19 46 22–53 11.2 µg/m³ 7.9 24h 125
2026-07-18 40 25–44 9.6 µg/m³ 5.4 24h 125
2026-07-17 45 35–54 10.8 µg/m³ 9.5 24h 130
2026-07-16 41 36–62 10.1 µg/m³ 5.6 24h 120
2026-07-15 39 33–45 9.4 µg/m³ 5.3 24h 126
2026-07-14 38 32–43 9.2 µg/m³ 6.1 24h 122
2026-07-13 44 29–52 10.7 µg/m³ 8.1 24h 125
2026-07-12 40 30–45 9.7 µg/m³ 7.9 24h 120
2026-07-11 50 34–59 12.5 µg/m³ 10.6 24h 99
2026-07-10 58 45–66 15.5 µg/m³ 16.3 24h 120
2026-07-09 44 33–57 10.8 µg/m³ 9.0 23h 131
2026-07-08 31 26–38 7.3 µg/m³ 4.1 24h 130
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