Stay updated with real-time air quality in Crestwood, 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)
33
Good
Crestwood, Missouri
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.38 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
31.50 μg/m³
0
55
155
255
425
605+
27.43 ppb
0
55
71
86
201
201+
1.65 ppb
0
36
76
186
605
1005+
6.36 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Crestwood, Missouri
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AQI 38
Good
7.09μg/m³
PM2.5
31.72μg/m³
PM10
22.68ppb
O3
0.86ppb
SO2
6.24ppb
NO2
0.21ppm
CO
AQI 33
Good
6.35μg/m³
PM2.5
27.20μg/m³
PM10
22.93ppb
O3
0.97ppb
SO2
6.63ppb
NO2
0.20ppm
CO
AQI 38
Good
7.20μg/m³
PM2.5
30.88μg/m³
PM10
24.14ppb
O3
0.93ppb
SO2
6.38ppb
NO2
0.20ppm
CO
AQI 27
Good
5.01μg/m³
PM2.5
24.77μg/m³
PM10
21.40ppb
O3
0.95ppb
SO2
6.81ppb
NO2
0.21ppm
CO
AQI 33
Good
5.88μg/m³
PM2.5
26.74μg/m³
PM10
21.37ppb
O3
0.98ppb
SO2
6.66ppb
NO2
0.20ppm
CO
AQI 33
Good
5.94μg/m³
PM2.5
26.39μg/m³
PM10
21.55ppb
O3
0.98ppb
SO2
6.63ppb
NO2
0.20ppm
CO
Air quality and pollutant data for Missouri, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Crestwood, Missouri is updated every hour for accuracy.
In the past 24 hours, the air quality in Crestwood, Missouri was at its worst at 10:00:00 on 2026-07-13.
In the last 24 hours, the best air quality in Crestwood, Missouri was observed at 02:00:00 on 2026-07-13.
As of now, the AQI in Crestwood, Missouri is 33, indicating Good conditions.
Crestwood, Missouri air has the highest levels of PM2.5.
Poor air quality in Crestwood, Missouri means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Crestwood, Missouri are currently 6.379 μg/m3.
The PM10 concentration in Crestwood, Missouri is 31.5 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Crestwood, Missouri is 0.233 ppm.
Currently, Crestwood, Missouri has a sulfur dioxide (SO2) concentration of 1.65 ppb.
The current ozone (O3) level in Crestwood, Missouri at the moment is 27.427 ppm.
Nitrogen dioxide (NO2) level in Crestwood, Missouri at the moment is 6.361 ppb.
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