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Air Quality History for Diamond Bar, United States

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

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

Air Quality Index Station

333h

PM2.5 Station

333h · 104 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-10-21 24 23–25 5.6 µg/m³ 1.8 4h 106
2026-10-20 32 10–42 7.8 µg/m³ 4.5 24h 94
2026-10-19 29 21–38 6.9 µg/m³ 2.8 24h 109
2026-10-18 25 20–34 6.1 µg/m³ 1.5 24h 100
2026-10-17 25 16–34 6.1 µg/m³ 0.7 24h 107
2026-10-16 26 15–45 6.3 µg/m³ 0.7 24h 102
2026-10-15 26 16–35 6.3 µg/m³ 1.9 24h 107
2026-10-14 25 18–29 6.1 µg/m³ 1.6 24h 108
2026-10-13 23 19–26 5.6 µg/m³ 1.6 24h 107
2026-10-12 23 18–29 5.5 µg/m³ 1.5 24h 107
2026-10-11 31 29–35 7.5 µg/m³ 3.8 24h 108
2026-10-10 40 30–49 9.7 µg/m³ 5.7 24h 95
2026-10-09 41 32–48 9.7 µg/m³ 5.6 24h 99
2026-10-08 47 34–55 11.4 µg/m³ 5.1 24h 109
2026-10-07 42 19–48 10.0 µg/m³ 3.6 17h 103
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