Stay updated with real-time air quality in Lemay, 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)
28
Good
Lemay, Missouri
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.01 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.41 μg/m³
0
55
155
255
425
605+
29.57 ppb
0
55
71
86
201
201+
1.08 ppb
0
36
76
186
605
1005+
4.55 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Lemay, Missouri
Lemay, Missouri
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AQI 25
Good
2.04μg/m³
PM2.5
9.46μg/m³
PM10
27.42ppb
O3
0.80ppb
SO2
5.50ppb
NO2
0.20ppm
CO
AQI 25
Good
2.26μg/m³
PM2.5
10.06μg/m³
PM10
27.43ppb
O3
0.79ppb
SO2
5.68ppb
NO2
0.20ppm
CO
AQI 27
Good
2.48μg/m³
PM2.5
12.22μg/m³
PM10
28.93ppb
O3
0.81ppb
SO2
4.78ppb
NO2
0.20ppm
CO
AQI 26
Good
2.30μg/m³
PM2.5
11.93μg/m³
PM10
28.24ppb
O3
0.82ppb
SO2
5.01ppb
NO2
0.20ppm
CO
AQI 26
Good
2.59μg/m³
PM2.5
12.19μg/m³
PM10
27.98ppb
O3
0.79ppb
SO2
5.28ppb
NO2
0.20ppm
CO
AQI 25
Good
2.80μg/m³
PM2.5
12.05μg/m³
PM10
27.23ppb
O3
0.78ppb
SO2
5.79ppb
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 Lemay, Missouri is updated on an hourly basis.
The worst air quality in Lemay, Missouri was recorded at 03:00:00 on 2026-09-06.
The best air quality in Lemay, Missouri was recorded at 12:00:00 on 2026-09-07.
The real-time air quality index in Lemay, Missouri is 28, currently categorized as Good.
The most common pollutant in Lemay, Missouri is O3.
If the air quality in Lemay, Missouri is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Lemay, Missouri at present are 5.011 μg/m3.
The current PM10 levels in Lemay, Missouri are 19.405 μg/m3.
The current carbon monoxide (CO) level in Lemay, Missouri is 0.2 ppm.
The current sulfur dioxide (SO2) levels in Lemay, Missouri are 1.077 ppb.
The current ozone (O3) levels at Lemay, Missouri is 29.573 ppm.
The current nitrogen dioxide (NO2) levels at Lemay, Missouri is 4.555 ppb.
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