Stay updated with real-time air quality in Crestwood, Illinois 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)
38
Good
Crestwood, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
7.00 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
31.52 μg/m³
0
55
155
255
425
605+
31.42 ppb
0
55
71
86
201
201+
0.31 ppb
0
36
76
186
605
1005+
3.75 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Crestwood, Illinois
Crestwood, Illinois
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AQI 56
Moderate
12.09μg/m³
PM2.5
54.97μg/m³
PM10
45.00ppb
O3
0.38ppb
SO2
4.37ppb
NO2
0.19ppm
CO
AQI 56
Moderate
11.71μg/m³
PM2.5
52.88μg/m³
PM10
44.79ppb
O3
0.37ppb
SO2
4.38ppb
NO2
0.19ppm
CO
AQI 56
Moderate
11.68μg/m³
PM2.5
52.69μg/m³
PM10
44.80ppb
O3
0.37ppb
SO2
4.38ppb
NO2
0.19ppm
CO
AQI 56
Moderate
11.75μg/m³
PM2.5
53.24μg/m³
PM10
45.06ppb
O3
0.38ppb
SO2
4.38ppb
NO2
0.19ppm
CO
AQI 56
Moderate
11.59μg/m³
PM2.5
52.23μg/m³
PM10
44.75ppb
O3
0.37ppb
SO2
4.38ppb
NO2
0.19ppm
CO
AQI 54
Moderate
11.05μg/m³
PM2.5
50.30μg/m³
PM10
45.50ppb
O3
0.36ppb
SO2
4.38ppb
NO2
0.19ppm
CO
Air quality measurements for Illinois, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Crestwood, Illinois is updated on an hourly basis.
The worst air quality in Crestwood, Illinois was recorded at 10:00:00 on 2025-07-08.
The best air quality in Crestwood, Illinois was recorded at 02:00:00 on 2025-07-09.
The real-time air quality index in Crestwood, Illinois is 54, currently categorized as Moderate.
The most common pollutant in Crestwood, Illinois is PM2.5.
If the air quality in Crestwood, Illinois is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Crestwood, Illinois at present are 11.41 μg/m3.
The current PM10 levels in Crestwood, Illinois are 50.659 μg/m3.
The current carbon monoxide (CO) level in Crestwood, Illinois is 0.249 ppm.
The current sulfur dioxide (SO2) levels in Crestwood, Illinois are 0.402 ppb.
The current ozone (O3) levels at Crestwood, Illinois is 44.494 ppm.
The current nitrogen dioxide (NO2) levels at Crestwood, Illinois is 5.341 ppb.
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