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Air Quality History for Menlo Park, United States

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

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

Air Quality Index Station

478h

PM2.5 Station

478h · 104 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 21 16–54 5.1 µg/m³ 5.4 21h 89
2026-10-19 23 20–27 5.5 µg/m³ 11.7 24h 103
2026-10-18 35 21–52 8.3 µg/m³ 20.3 24h 95
2026-10-17 30 25–35 7.2 µg/m³ 12.8 24h 105
2026-10-16 31 23–40 7.5 µg/m³ 12.3 24h 100
2026-10-15 28 25–35 6.8 µg/m³ 12.3 24h 108
2026-10-14 24 19–29 5.8 µg/m³ 11.2 24h 109
2026-10-13 25 18–30 5.9 µg/m³ 12.1 24h 108
2026-10-12 25 23–28 6.0 µg/m³ 10.5 24h 109
2026-10-11 28 25–35 6.8 µg/m³ 14.5 24h 108
2026-10-10 29 23–44 7.0 µg/m³ 14.3 24h 96
2026-10-09 36 30–45 8.6 µg/m³ 19.9 24h 101
2026-10-08 29 25–36 6.9 µg/m³ 11.5 24h 109
2026-10-07 26 22–35 6.2 µg/m³ 12.7 24h 105
2026-10-06 31 25–38 7.4 µg/m³ 13.2 24h 106
2026-10-05 31 28–35 7.4 µg/m³ 8.5 24h 110
2026-10-04 36 22–42 8.5 µg/m³ 4.2 24h 100
2026-10-03 37 27–50 8.9 µg/m³ 7.6 24h 106
2026-10-02 37 25–53 8.9 µg/m³ 6.9 24h 109
2026-10-01 26 21–36 6.3 µg/m³ 2.2 24h 109
2026-09-30 29 29–29 7.0 µg/m³ 3.5 1h 112
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