Stay updated with real-time air quality in Grayslake, 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)
22
Good
Grayslake, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.02 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.16 μg/m³
0
55
155
255
425
605+
17.09 ppb
0
55
71
86
201
201+
0.32 ppb
0
36
76
186
605
1005+
3.27 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Grayslake, Illinois
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AQI 23
Good
2.68μg/m³
PM2.5
9.37μg/m³
PM10
24.64ppb
O3
0.37ppb
SO2
2.16ppb
NO2
0.22ppm
CO
AQI 23
Good
2.68μg/m³
PM2.5
9.37μg/m³
PM10
24.64ppb
O3
0.37ppb
SO2
2.16ppb
NO2
0.22ppm
CO
AQI 22
Good
2.57μg/m³
PM2.5
10.32μg/m³
PM10
23.99ppb
O3
0.37ppb
SO2
2.20ppb
NO2
0.22ppm
CO
AQI 22
Good
2.57μg/m³
PM2.5
10.32μg/m³
PM10
23.99ppb
O3
0.37ppb
SO2
2.20ppb
NO2
0.22ppm
CO
AQI 21
Good
2.56μg/m³
PM2.5
8.32μg/m³
PM10
23.17ppb
O3
0.38ppb
SO2
1.87ppb
NO2
0.21ppm
CO
AQI 21
Good
2.60μg/m³
PM2.5
9.02μg/m³
PM10
23.00ppb
O3
0.38ppb
SO2
1.93ppb
NO2
0.22ppm
CO
The air quality data for Illinois, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Grayslake, Illinois are available every hour.
Grayslake, Illinois experienced its worst air quality at 10:00:00, 2026-03-06.
The best air quality in Grayslake, Illinois was observed at 07:00:00 on 2026-03-07.
The air quality in Grayslake, Illinois right now is Good, with an AQI of 20.
In Grayslake, Illinois, O3 is the most frequently found pollutant.
When air quality in Grayslake, Illinois is compromised, staying indoors and wearing a mask can reduce health risks.
Grayslake, Illinois currently has a PM2.5 concentration of 2.759 μg/m3.
Grayslake, Illinois currently has a PM10 concentration of 14.92 μg/m3.
The current carbon monoxide (CO) level in Grayslake, Illinois is 0.206 ppm.
The current sulfur dioxide (SO2) concentration in Grayslake, Illinois is 0.32 ppb.
Grayslake, Illinois currently has an ozone (O3) concentration of 21.828 ppm.
The current level of nitrogen dioxide (NO2) in Grayslake, Illinois is 2.658 ppb.
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