Air Quality in San Francisco, El Salvador
Clear
31.3°C · 41.6% humidity
31.3°
Feels 33.6°
10
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
San Francisco's air quality — share it
AQI Forecast
Calibrated
88
12am
88
88
10
3am
32
48
59
6am
67
53
57
9am
53
54
55
12pm
56
57
58
3pm
60
60
67
6pm
68
68
88
9pm
88
88
Station readings
106
CAMS model
adj +34
54
54
54
54
54
54
54
54
34
34
27
25
25
25
25
25
27
27
34
34
34
54
54
54
Air Quality Index Trend
23h · 1 stnSan Francisco's air quality is influenced by vehicle emissions, industrial activity, and seasonal agricultural burning. Pollution patterns vary with dry and wet seasons.
41.6%
Humidity
22.0 km/h
Wind SSE
1010.6 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
2.38 µg/m³
PM10▲
20.55 µg/m³
050100150200300500
What is the weather forecast for San Francisco?
Temperature & Precipitation
PM2.5 Trend
23h · 1 stationPM2.52.38 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX5.9
High
Station readings (1 station within 25 km)
2.38
Median
2.38
Average
2.38
Low
2.38
High
PM2.5 µg/m³ · Model: 9.65 · Bias: +7.3
What is the 7-day forecast for San Francisco?
08-03
31.3° 19.4°
0.06 mm
08-04
33.0° 20.9°
1.25 mm
08-05
30.3° 19.4°
2.0 mm
08-06
35.7° 19.5°
08-07
26.8° 19.8°
1.63 mm
08-08
31.0° 20.1°
08-09
32.3° 21.1°
0.81 mm
Both models agree
Avg diff: 3.9°C
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T09:24 UTC.