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)
24
Good
Crestwood, Missouri
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.91 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.28 μg/m³
0
55
155
255
425
605+
26.13 ppb
0
55
71
86
201
201+
0.36 ppb
0
36
76
186
605
1005+
3.57 ppb
0
54
101
361
1250
2050+
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Crestwood, Missouri
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AQI 24
Good
1.84μg/m³
PM2.5
8.28μg/m³
PM10
26.40ppb
O3
0.39ppb
SO2
3.46ppb
NO2
0.10ppm
CO
AQI 24
Good
1.91μg/m³
PM2.5
10.10μg/m³
PM10
26.14ppb
O3
0.34ppb
SO2
3.87ppb
NO2
0.10ppm
CO
AQI 24
Good
1.77μg/m³
PM2.5
9.26μg/m³
PM10
26.13ppb
O3
0.36ppb
SO2
3.97ppb
NO2
0.10ppm
CO
AQI 24
Good
2.05μg/m³
PM2.5
10.75μg/m³
PM10
26.11ppb
O3
0.37ppb
SO2
3.16ppb
NO2
0.10ppm
CO
AQI 24
Good
2.00μg/m³
PM2.5
8.91μg/m³
PM10
25.94ppb
O3
0.35ppb
SO2
3.68ppb
NO2
0.10ppm
CO
AQI 24
Good
1.95μg/m³
PM2.5
8.65μg/m³
PM10
25.97ppb
O3
0.34ppb
SO2
3.79ppb
NO2
0.10ppm
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 05:00:00 on 2026-01-23.
In the last 24 hours, the best air quality in Crestwood, Missouri was observed at 01:00:00 on 2026-01-22.
As of now, the AQI in Crestwood, Missouri is 24, indicating Good conditions.
Crestwood, Missouri air has the highest levels of O3.
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 1.909 μg/m3.
The PM10 concentration in Crestwood, Missouri is 10.283 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Crestwood, Missouri is 0.1 ppm.
Currently, Crestwood, Missouri has a sulfur dioxide (SO2) concentration of 0.363 ppb.
The current ozone (O3) level in Crestwood, Missouri at the moment is 26.128 ppm.
Nitrogen dioxide (NO2) level in Crestwood, Missouri at the moment is 3.573 ppb.
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