Stay updated with real-time air quality in Florissant, Missouri featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
35
Good
Florissant, Missouri
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
5.07 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
24.61 μg/m³
0
55
155
255
425
605+
38.07 ppb
0
55
71
86
201
201+
0.38 ppb
0
36
76
186
605
1005+
7.94 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Florissant, Missouri
Florissant, Missouri
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AQI 31
Good
5.47μg/m³
PM2.5
32.60μg/m³
PM10
34.37ppb
O3
0.47ppb
SO2
12.60ppb
NO2
0.27ppm
CO
AQI 34
Good
4.44μg/m³
PM2.5
17.08μg/m³
PM10
37.31ppb
O3
0.31ppb
SO2
7.20ppb
NO2
0.26ppm
CO
AQI 36
Good
6.05μg/m³
PM2.5
33.80μg/m³
PM10
38.83ppb
O3
0.42ppb
SO2
6.39ppb
NO2
0.26ppm
CO
AQI 33
Good
6.02μg/m³
PM2.5
35.34μg/m³
PM10
34.49ppb
O3
0.48ppb
SO2
15.79ppb
NO2
0.27ppm
CO
AQI 31
Good
5.06μg/m³
PM2.5
28.62μg/m³
PM10
34.06ppb
O3
0.47ppb
SO2
13.26ppb
NO2
0.28ppm
CO
AQI 36
Good
6.34μg/m³
PM2.5
30.87μg/m³
PM10
39.13ppb
O3
0.37ppb
SO2
5.47ppb
NO2
0.26ppm
CO
Air quality measurements for Missouri, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Florissant, Missouri is updated on an hourly basis.
The worst air quality in Florissant, Missouri was recorded at 07:00:00 on 2025-06-04.
The best air quality in Florissant, Missouri was recorded at 03:00:00 on 2025-06-04.
The real-time air quality index in Florissant, Missouri is 35, currently categorized as Good.
The most common pollutant in Florissant, Missouri is O3.
If the air quality in Florissant, Missouri is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Florissant, Missouri at present are 5.072 μg/m3.
The current PM10 levels in Florissant, Missouri are 24.612 μg/m3.
The current carbon monoxide (CO) level in Florissant, Missouri is 0.263 ppm.
The current sulfur dioxide (SO2) levels in Florissant, Missouri are 0.382 ppb.
The current ozone (O3) levels at Florissant, Missouri is 38.068 ppm.
The current nitrogen dioxide (NO2) levels at Florissant, Missouri is 7.944 ppb.
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