Air quality in San Mateo

Fair

Air Quality Index

Air quality is acceptable. Extremely sensitive people may experience minor symptoms.

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PM2.5 5.6 µg/m³

PM10 9.2 µg/m³

NO₂ 3.2 µg/m³

O₃ 89 µg/m³

SO₂ 0.8 µg/m³

CO 144 µg/m³