Air quality in Saint Charles

Fair

Air Quality Index

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

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PM2.5 6.1 µg/m³

PM10 6.3 µg/m³

NO₂ 7.7 µg/m³

O₃ 84 µg/m³

SO₂ 2.1 µg/m³

CO 189 µg/m³