Air quality in St. Louis
27
Fair
Air Quality Index
Air quality is acceptable. Extremely sensitive people may experience minor symptoms.
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Pollutants
PM2.5
18.3 µg/m³
PM10
19 µg/m³
NO₂
42.2 µg/m³
O₃
27 µg/m³
SO₂
1.5 µg/m³
CO
208 µg/m³