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)
49
Good
Missouri, USA
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.81 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
37.09 μg/m³
0
55
155
255
425
605+
26.62 ppb
0
55
71
86
201
201+
0.65 ppb
0
36
76
186
605
1005+
5.34 ppb
0
54
101
361
1250
2050+
0.21 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 54
Moderate
11.12μg/m³
PM2.5
43.41μg/m³
PM10
35.34ppb
O3
1.20ppb
SO2
2.97ppb
NO2
0.25ppm
CO
AQI 44
Good
7.71μg/m³
PM2.5
32.22μg/m³
PM10
29.62ppb
O3
0.71ppb
SO2
10.30ppb
NO2
0.21ppm
CO
AQI 52
Moderate
9.79μg/m³
PM2.5
40.84μg/m³
PM10
28.71ppb
O3
0.41ppb
SO2
4.82ppb
NO2
0.25ppm
CO
AQI 62
Moderate
15.23μg/m³
PM2.5
56.29μg/m³
PM10
31.10ppb
O3
1.28ppb
SO2
9.14ppb
NO2
0.27ppm
CO
AQI 38
Good
7.24μg/m³
PM2.5
23.63μg/m³
PM10
31.46ppb
O3
0.81ppb
SO2
2.83ppb
NO2
0.32ppm
CO
AQI 38
Good
6.68μg/m³
PM2.5
26.24μg/m³
PM10
29.81ppb
O3
0.84ppb
SO2
4.80ppb
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 Missouri, USA is updated on an hourly basis.
The worst air quality in Missouri, USA was recorded at 03:00:00 on 2026-02-03.
The best air quality in Missouri, USA was recorded at 01:00:00 on 2026-02-03.
The real-time air quality index in Missouri, USA is 49, currently categorized as Good.
The most common pollutant in Missouri, USA is PM2.5.
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 8.75 μg/m3.
The current PM10 levels in Missouri, USA are 37.245 μg/m3.
The current carbon monoxide (CO) level in Missouri, USA is 0.208 ppm.
The current sulfur dioxide (SO2) levels in Missouri, USA are 0.624 ppb.
The current ozone (O3) levels at Missouri, USA is 27.758 ppm.
The current nitrogen dioxide (NO2) levels at Missouri, USA is 6.037 ppb.
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