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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
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

394h

PM2.5 Station

394h · 1 station

Temperature GFS model

80pt

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 32 15–60 7.8 µg/m³ 20h 2
2026-05-25 38 20–54 9.1 µg/m³ 21h 2
2026-05-24 34 8–59 8.2 µg/m³ 23h 1
2026-05-23 43 26–80 11.1 µg/m³ 16h 2
2026-05-22 36 20–61 8.8 µg/m³ 21h 1
2026-05-21 34 16–62 8.3 µg/m³ 21h 1
2026-05-20 47 16–164 15.4 µg/m³ 12h 1
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