Stay updated with real-time air quality in Hazelwood, 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)
66
Moderate
Hazelwood, Missouri
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
17.24 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
77.91 μg/m³
0
55
155
255
425
605+
11.11 ppb
0
55
71
86
201
201+
2.67 ppb
0
36
76
186
605
1005+
25.58 ppb
0
54
101
361
1250
2050+
0.70 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Hazelwood, Missouri
Hazelwood, Missouri
Scroll To Air Quality MapLoading...
AQI 58
Moderate
13.08μg/m³
PM2.5
39.14μg/m³
PM10
8.34ppb
O3
3.12ppb
SO2
21.95ppb
NO2
0.88ppm
CO
AQI 69
Moderate
18.94μg/m³
PM2.5
60.77μg/m³
PM10
10.01ppb
O3
2.02ppb
SO2
21.38ppb
NO2
0.90ppm
CO
AQI 60
Moderate
13.99μg/m³
PM2.5
56.85μg/m³
PM10
9.25ppb
O3
2.57ppb
SO2
25.80ppb
NO2
0.90ppm
CO
AQI 70
Moderate
19.47μg/m³
PM2.5
94.21μg/m³
PM10
9.56ppb
O3
1.71ppb
SO2
27.22ppb
NO2
0.93ppm
CO
AQI 60
Moderate
13.66μg/m³
PM2.5
61.43μg/m³
PM10
10.31ppb
O3
2.22ppb
SO2
28.29ppb
NO2
0.91ppm
CO
AQI 58
Moderate
12.81μg/m³
PM2.5
38.28μg/m³
PM10
8.23ppb
O3
3.16ppb
SO2
21.99ppb
NO2
0.88ppm
CO
Air quality data and pollutant measurements for Missouri, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Hazelwood, Missouri is updated every hour.
The worst air quality in Hazelwood, Missouri in the last 24 hours was observed at 12:00:00 on 2025-11-13.
In the last 24 hrs, the best air quality in Hazelwood, Missouri was observed at 06:00:00 on 2025-11-12.
The current air quality in Hazelwood, Missouri is 62, categorized as Moderate based on real-time data.
The most common pollutant in Hazelwood, Missouri is PM2.5.
If the air quality in Hazelwood, Missouri is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Hazelwood, Missouri is 15.283 μg/m3.
The current PM10 concentration at Hazelwood, Missouri is 50.265 μg/m3.
The current carbon monoxide (CO) concentration at Hazelwood, Missouri is 0.894 ppm.
The current sulfur dioxide (SO2) concentration at Hazelwood, Missouri is 2.534 ppb.
The current ozone (O3) concentration at Hazelwood, Missouri is 9.343 ppm.
The current nitrogen dioxide (NO2) concentration at Hazelwood, Missouri is 23.642 ppb.
All Rights Reserved © Ambee Inc. 2025