Air Quality in Florissant, United States
Windy
25.6°C · 47.5% humidity
25.6°
Feels 25.6°
45
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
AQI Forecast
54
9pm
54
54
45
12am
48
49
51
3am
52
52
53
6am
53
33
54
9am
54
54
54
12pm
54
34
34
3pm
34
34
54
6pm
54
54
Air Quality Index Trend
37h · 4 stnFlorissant's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
47.5%
Humidity
56.4 km/h
Wind NE
1017.7 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
10.75 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Florissant?
Temperature & Precipitation
PM2.5 Trend
37h · 4 stationsPM2.510.75 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX5.9
High
Station readings (2 stations within 25 km)
10.75
Median
11.55
Average
9.6
Low
13.5
High
PM2.5 µg/m³ · Model: 10.0 · Bias: -0.8
What is the 7-day forecast for Florissant?
08-03
30.4° 20.9°
08-04
35.9° 19.3°
08-05
36.1° 16.1°
25.81 mm
08-06
40.2° 20.5°
3.5 mm
08-07
33.4° 21.2°
08-08
37.5° 25.9°
1.44 mm
08-09
35.3° 28.0°
Both models agree
Avg diff: 3.5°C
Where are air quality stations near Florissant?
23
Ladue, Missouri, USA
22
Forest Park, Missouri, USA
72
Branch Street, Missouri, USA
43
East St. Louis, Illinois, USA
35
East St. Louis, Illinois, USA
What cities are near Florissant?
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T05:50 UTC.