Air quality in San Mateo
26
Fair
Air Quality Index
Air quality is acceptable. Extremely sensitive people may experience minor symptoms.
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Pollutants
PM2.5
16.9 µg/m³
PM10
22.9 µg/m³
NO₂
17.1 µg/m³
O₃
12 µg/m³
SO₂
2.4 µg/m³
CO
120 µg/m³