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)
52
Moderate
Hazelwood, Missouri
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
9.79 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
43.22 μg/m³
0
55
155
255
425
605+
27.95 ppb
0
55
71
86
201
201+
0.19 ppb
0
36
76
186
605
1005+
2.74 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Hazelwood, Missouri
Hazelwood, Missouri
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AQI 49
Good
8.80μg/m³
PM2.5
41.95μg/m³
PM10
28.10ppb
O3
0.13ppb
SO2
3.19ppb
NO2
0.29ppm
CO
AQI 54
Moderate
11.43μg/m³
PM2.5
44.94μg/m³
PM10
28.20ppb
O3
0.26ppb
SO2
2.19ppb
NO2
0.29ppm
CO
AQI 49
Good
9.11μg/m³
PM2.5
42.38μg/m³
PM10
28.07ppb
O3
0.18ppb
SO2
2.88ppb
NO2
0.29ppm
CO
AQI 54
Moderate
10.67μg/m³
PM2.5
49.80μg/m³
PM10
28.40ppb
O3
0.29ppb
SO2
2.33ppb
NO2
0.30ppm
CO
AQI 49
Good
9.35μg/m³
PM2.5
42.54μg/m³
PM10
28.19ppb
O3
0.23ppb
SO2
2.65ppb
NO2
0.30ppm
CO
AQI 44
Good
8.46μg/m³
PM2.5
40.70μg/m³
PM10
28.07ppb
O3
0.14ppb
SO2
3.07ppb
NO2
0.29ppm
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 10:00:00 on 2025-09-05.
In the last 24 hrs, the best air quality in Hazelwood, Missouri was observed at 12:00:00 on 2025-09-05.
The current air quality in Hazelwood, Missouri is 52, 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 9.785 μg/m3.
The current PM10 concentration at Hazelwood, Missouri is 43.22 μg/m3.
The current carbon monoxide (CO) concentration at Hazelwood, Missouri is 0.292 ppm.
The current sulfur dioxide (SO2) concentration at Hazelwood, Missouri is 0.188 ppb.
The current ozone (O3) concentration at Hazelwood, Missouri is 27.955 ppm.
The current nitrogen dioxide (NO2) concentration at Hazelwood, Missouri is 2.739 ppb.
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