Stay updated with real-time air quality in Hazel Crest, 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)
27
Good
Hazel Crest, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.54 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
20.11 μg/m³
0
55
155
255
425
605+
20.95 ppb
0
55
71
86
201
201+
0.57 ppb
0
36
76
186
605
1005+
3.39 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Hazel Crest, Illinois
Hazel Crest, Illinois
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AQI 27
Good
4.83μg/m³
PM2.5
20.46μg/m³
PM10
21.78ppb
O3
0.49ppb
SO2
3.00ppb
NO2
0.16ppm
CO
AQI 22
Good
4.36μg/m³
PM2.5
19.38μg/m³
PM10
21.24ppb
O3
0.49ppb
SO2
2.97ppb
NO2
0.16ppm
CO
AQI 27
Good
4.89μg/m³
PM2.5
20.47μg/m³
PM10
21.58ppb
O3
0.49ppb
SO2
2.96ppb
NO2
0.16ppm
CO
AQI 22
Good
4.13μg/m³
PM2.5
18.40μg/m³
PM10
21.07ppb
O3
0.48ppb
SO2
3.03ppb
NO2
0.16ppm
CO
AQI 27
Good
4.63μg/m³
PM2.5
20.48μg/m³
PM10
21.34ppb
O3
0.49ppb
SO2
2.94ppb
NO2
0.16ppm
CO
AQI 22
Good
3.94μg/m³
PM2.5
17.59μg/m³
PM10
21.09ppb
O3
0.49ppb
SO2
3.04ppb
NO2
0.16ppm
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 Hazel Crest, Illinois is updated on an hourly basis.
The worst air quality in Hazel Crest, Illinois was recorded at 06:00:00 on 2026-01-18.
The best air quality in Hazel Crest, Illinois was recorded at 10:00:00 on 2026-01-17.
The real-time air quality index in Hazel Crest, Illinois is 27, currently categorized as Good.
The most common pollutant in Hazel Crest, Illinois is PM2.5.
If the air quality in Hazel Crest, Illinois is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Hazel Crest, Illinois at present are 4.537 μg/m3.
The current PM10 levels in Hazel Crest, Illinois are 20.105 μg/m3.
The current carbon monoxide (CO) level in Hazel Crest, Illinois is 0.164 ppm.
The current sulfur dioxide (SO2) levels in Hazel Crest, Illinois are 0.568 ppb.
The current ozone (O3) levels at Hazel Crest, Illinois is 20.95 ppm.
The current nitrogen dioxide (NO2) levels at Hazel Crest, Illinois is 3.392 ppb.
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