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)
25
Good
Crestwood, Missouri
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.21 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.06 μg/m³
0
55
155
255
425
605+
27.42 ppb
0
55
71
86
201
201+
0.69 ppb
0
36
76
186
605
1005+
14.36 ppb
0
54
101
361
1250
2050+
0.36 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Crestwood, Missouri
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AQI 22
Good
4.12μg/m³
PM2.5
24.13μg/m³
PM10
22.25ppb
O3
0.80ppb
SO2
7.63ppb
NO2
0.20ppm
CO
AQI 22
Good
4.31μg/m³
PM2.5
17.82μg/m³
PM10
24.23ppb
O3
0.71ppb
SO2
11.62ppb
NO2
0.20ppm
CO
AQI 27
Good
4.58μg/m³
PM2.5
19.59μg/m³
PM10
23.31ppb
O3
0.74ppb
SO2
13.41ppb
NO2
0.20ppm
CO
AQI 30
Good
2.95μg/m³
PM2.5
11.72μg/m³
PM10
31.51ppb
O3
0.72ppb
SO2
5.61ppb
NO2
0.20ppm
CO
AQI 25
Good
3.82μg/m³
PM2.5
15.59μg/m³
PM10
26.94ppb
O3
0.70ppb
SO2
9.06ppb
NO2
0.20ppm
CO
AQI 23
Good
4.12μg/m³
PM2.5
16.97μg/m³
PM10
25.29ppb
O3
0.70ppb
SO2
10.49ppb
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 03:00:00 on 2026-10-07.
In the last 24 hours, the best air quality in Crestwood, Missouri was observed at 10:00:00 on 2026-10-07.
As of now, the AQI in Crestwood, Missouri is 25, 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 3.669 μg/m3.
The PM10 concentration in Crestwood, Missouri is 15.202 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Crestwood, Missouri is 0.2 ppm.
Currently, Crestwood, Missouri has a sulfur dioxide (SO2) concentration of 0.798 ppb.
The current ozone (O3) level in Crestwood, Missouri at the moment is 27.49 ppm.
Nitrogen dioxide (NO2) level in Crestwood, Missouri at the moment is 8.943 ppb.
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