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)
27
Good
Missouri, USA
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.16 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
20.43 μg/m³
0
55
155
255
425
605+
28.67 ppb
0
55
71
86
201
201+
0.58 ppb
0
36
76
186
605
1005+
3.04 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 58
Moderate
13.07μg/m³
PM2.5
56.38μg/m³
PM10
20.58ppb
O3
0.42ppb
SO2
3.76ppb
NO2
0.17ppm
CO
AQI 33
Good
5.53μg/m³
PM2.5
23.89μg/m³
PM10
24.97ppb
O3
0.45ppb
SO2
3.70ppb
NO2
0.21ppm
CO
AQI 33
Good
5.57μg/m³
PM2.5
23.05μg/m³
PM10
17.64ppb
O3
0.73ppb
SO2
4.20ppb
NO2
0.25ppm
CO
AQI 56
Moderate
12.30μg/m³
PM2.5
50.30μg/m³
PM10
16.51ppb
O3
0.78ppb
SO2
8.22ppb
NO2
0.31ppm
CO
AQI 38
Good
7.35μg/m³
PM2.5
29.70μg/m³
PM10
39.38ppb
O3
0.57ppb
SO2
3.90ppb
NO2
0.29ppm
CO
AQI 33
Good
5.83μg/m³
PM2.5
21.86μg/m³
PM10
31.11ppb
O3
0.71ppb
SO2
3.10ppb
NO2
0.20ppm
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 11:00:00 on 2026-08-16.
The best air quality in Missouri, USA was recorded at 02:00:00 on 2026-08-16.
The real-time air quality index in Missouri, USA is 27, 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 5.156 μg/m3.
The current PM10 levels in Missouri, USA are 20.434 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 0.579 ppb.
The current ozone (O3) levels at Missouri, USA is 28.674 ppm.
The current nitrogen dioxide (NO2) levels at Missouri, USA is 3.037 ppb.
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