Stay updated with real-time air quality in Missouri, USA 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)
39
Good
Missouri, USA
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.66 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.79 μg/m³
0
55
155
255
425
605+
41.71 ppb
0
55
71
86
201
201+
0.73 ppb
0
36
76
186
605
1005+
2.05 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Missouri, USA
Missouri, USA
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| City | AQI | PM2.5 | PM10 | O3 | SO2 | NO2 | CO |
|---|---|---|---|---|---|---|---|
AQI 44
Good
8.20μg/m³
PM2.5
33.42μg/m³
PM10
30.06ppb
O3
0.59ppb
SO2
1.57ppb
NO2
0.20ppm
CO
AQI 35
Good
3.55μg/m³
PM2.5
15.32μg/m³
PM10
38.09ppb
O3
0.73ppb
SO2
3.15ppb
NO2
0.15ppm
CO
AQI 33
Good
4.78μg/m³
PM2.5
19.54μg/m³
PM10
36.29ppb
O3
1.21ppb
SO2
2.20ppb
NO2
0.15ppm
CO
AQI 28
Good
5.41μg/m³
PM2.5
21.36μg/m³
PM10
30.14ppb
O3
0.86ppb
SO2
4.99ppb
NO2
0.22ppm
CO
AQI 29
Good
5.39μg/m³
PM2.5
19.42μg/m³
PM10
30.67ppb
O3
0.77ppb
SO2
3.61ppb
NO2
0.35ppm
CO
AQI 31
Good
4.74μg/m³
PM2.5
17.16μg/m³
PM10
33.73ppb
O3
1.24ppb
SO2
3.24ppb
NO2
0.22ppm
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 Missouri, USA is updated on an hourly basis.
The worst air quality in Missouri, USA was recorded at 07:00:00 on 2026-06-19.
The best air quality in Missouri, USA was recorded at 11:00:00 on 2026-06-20.
The real-time air quality index in Missouri, USA is 33, currently categorized as Good.
The most common pollutant in Missouri, USA is O3.
If the air quality in Missouri, USA is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Missouri, USA at present are 4.979 μg/m3.
The current PM10 levels in Missouri, USA are 19.92 μg/m3.
The current carbon monoxide (CO) level in Missouri, USA is 0.163 ppm.
The current sulfur dioxide (SO2) levels in Missouri, USA are 0.943 ppb.
The current ozone (O3) levels at Missouri, USA is 35.718 ppm.
The current nitrogen dioxide (NO2) levels at Missouri, USA is 2.5 ppb.
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