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WeatherLive › Missouri › Florissant › Air Quality

Florissant, MO Air Quality

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Air quality in Florissant

The US Air Quality Index (EPA) grades air from 0 to 500 using fine particles (PM2.5/PM10), ozone and nitrogen dioxide. 0-50 is Good, 51-100 Moderate, 101-150 Unhealthy for Sensitive Groups, and anything higher affects everyone.

US AQI · EPA
27
Good
PM2.5
1.7 µg/m³
WHO guideline 15
PM10
1.7 µg/m³
WHO guideline 45
NO₂ · O₃
6 · 57
µg/m³

Hour by hour (12h)

US EPA AQI
6:00 PM 💨 PM2.5 1.7 µg/m³
27Good
7:00 PM 💨 PM2.5 1.6 µg/m³
27Good
8:00 PM 💨 PM2.5 1.5 µg/m³
27Good
9:00 PM 💨 PM2.5 1.5 µg/m³
27Good
10:00 PM 💨 PM2.5 1.7 µg/m³
27Good
11:00 PM 💨 PM2.5 1.7 µg/m³
26Good
12:00 AM 💨 PM2.5 1.6 µg/m³
26Good
1:00 AM 💨 PM2.5 1.5 µg/m³
25Good
2:00 AM 💨 PM2.5 1.4 µg/m³
25Good
3:00 AM 💨 PM2.5 1.4 µg/m³
24Good
4:00 AM 💨 PM2.5 1.4 µg/m³
23Good
5:00 AM 💨 PM2.5 1.5 µg/m³
22Good

Next few days

daily max · US EPA AQI
Thu 💨 Good · UV Low
40
Fri 💨 Good · UV Low
31
Sat 💨 Moderate · UV Low
89
Sun 💨 Moderate · UV Moderate
79
Mon 💨 Good · UV Moderate
37

Weather map — Florissant

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Updated: 6:12 PM