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Air quality in San Francisco

Updated:

Air quality now (European AQI) · 08:00

46

Moderate

Main pollutant: Nitrogen dioxide (NO₂)

Fine particles (PM2.5)
21.8 µg/m³
Particles (PM10)
23.9 µg/m³
Nitrogen dioxide (NO₂)
34.9 µg/m³
Ozone (O₃)
22 µg/m³
Sulphur dioxide (SO₂)
1.7 µg/m³

Cleanest air today

17:00–19:00

AQI 34Fair

A good time to air out your home or exercise outdoors.

If you're sensitive, consider shortening long, intense outdoor exercise.

Next 3 days

Today

Max AQI46Moderate
Main pollutant:
Nitrogen dioxide (NO₂)
Cleanest time:
17:00–19:00
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Tomorrow

Max AQI41Moderate
Main pollutant:
Fine particles (PM2.5)
Cleanest time:
05:00–07:00
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Monday

Max AQI41Moderate
Main pollutant:
Fine particles (PM2.5)
Cleanest time:
17:00–19:00
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