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Air Quality History for Palo Alto, United States

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

23
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

460h

PM2.5 Station

460h · 108 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-07-22 21 21–21 5.0 µg/m³ 1.1 1h 108
2026-07-21 29 23–51 7.0 µg/m³ 4.9 24h 106
2026-07-20 23 17–64 5.6 µg/m³ 2.8 24h 100
2026-07-19 26 20–30 6.1 µg/m³ 4.3 24h 104
2026-07-18 28 22–32 6.6 µg/m³ 3.4 24h 104
2026-07-17 36 31–43 8.6 µg/m³ 8.7 24h 107
2026-07-16 42 30–220 14.9 µg/m³ 6.8 24h 100
2026-07-15 34 29–58 8.3 µg/m³ 5.9 24h 103
2026-07-14 32 29–48 7.8 µg/m³ 9.1 24h 103
2026-07-13 29 25–44 7.0 µg/m³ 5.4 24h 105
2026-07-12 24 20–33 5.8 µg/m³ 2.7 24h 99
2026-07-11 24 18–53 5.9 µg/m³ 1.8 24h 82
2026-07-10 37 27–54 8.8 µg/m³ 7.0 24h 99
2026-07-09 24 18–32 5.7 µg/m³ 3.0 24h 103
2026-07-08 26 23–28 6.2 µg/m³ 3.3 24h 108
2026-07-07 22 17–42 5.4 µg/m³ 2.5 24h 107
2026-07-06 16 4–20 3.9 µg/m³ 1.8 13h 99
2026-07-05 30 16–72 7.8 µg/m³ 6.2 24h 107
2026-07-04 22 18–26 5.3 µg/m³ 2.4 24h 108
2026-07-03 27 22–34 6.6 µg/m³ 3.8 24h 108
2026-07-02 34 12–67 8.8 µg/m³ 4.9 14h 77
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