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Air Quality History for San Juan, United States

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

46
Current AQI
Good Station

Air Quality Index Station

270h

PM2.5 Station

270h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-06-09 48 31–62 12.1 µg/m³ 7h 1
2026-06-08 48 30–65 12.0 µg/m³ 23h 2
2026-06-07 53 2–83 14.2 µg/m³ 23h 1
2026-06-06 40 16–70 10.1 µg/m³ 20h 2
2026-06-05 30 14–58 7.2 µg/m³ 22h 1
2026-06-04 26 10–44 6.3 µg/m³ 21h 2
2026-06-03 28 6–52 6.8 µg/m³ 21h 1
2026-06-02 52 23–72 13.8 µg/m³ 21h 1
2026-06-01 46 6–78 11.7 µg/m³ 17h 1
2026-05-31 37 13–59 9.0 µg/m³ 13h 1
2026-05-30 39 11–62 9.7 µg/m³ 11h 1
2026-05-29 28 10–50 6.7 µg/m³ 18h 1
2026-05-28 35 12–66 8.8 µg/m³ 22h 1
2026-05-27 30 1–52 7.2 µg/m³ 21h 1
2026-05-26 41 27–60 10.0 µg/m³ 10h 2
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