Air quality in San Marcos
21
Fair
Air Quality Index
Air quality is acceptable. Extremely sensitive people may experience minor symptoms.
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Pollutants
PM2.5
10.9 µg/m³
PM10
11.2 µg/m³
NO₂
6.3 µg/m³
O₃
53 µg/m³
SO₂
3.3 µg/m³
CO
214 µg/m³