Stay updated with real-time air quality in Granite City, 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
Granite City, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.63 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
26.88 μg/m³
0
55
155
255
425
605+
23.43 ppb
0
55
71
86
201
201+
0.42 ppb
0
36
76
186
605
1005+
8.48 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Granite City, Illinois
Granite City, Illinois
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AQI 38
Good
7.04μg/m³
PM2.5
26.73μg/m³
PM10
23.64ppb
O3
0.40ppb
SO2
8.51ppb
NO2
0.22ppm
CO
AQI 33
Good
6.03μg/m³
PM2.5
26.94μg/m³
PM10
24.95ppb
O3
0.43ppb
SO2
8.77ppb
NO2
0.23ppm
CO
AQI 44
Good
7.57μg/m³
PM2.5
25.25μg/m³
PM10
22.81ppb
O3
0.34ppb
SO2
9.60ppb
NO2
0.21ppm
CO
AQI 44
Good
8.46μg/m³
PM2.5
32.75μg/m³
PM10
23.82ppb
O3
0.39ppb
SO2
9.27ppb
NO2
0.24ppm
CO
AQI 38
Good
7.42μg/m³
PM2.5
33.52μg/m³
PM10
26.41ppb
O3
0.50ppb
SO2
6.86ppb
NO2
0.24ppm
CO
AQI 44
Good
8.22μg/m³
PM2.5
32.98μg/m³
PM10
24.95ppb
O3
0.41ppb
SO2
8.67ppb
NO2
0.25ppm
CO
Air quality and pollutant data for Illinois, 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 Granite City, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Granite City, Illinois was at its worst at 03:00:00 on 2025-07-14.
In the last 24 hours, the best air quality in Granite City, Illinois was observed at 07:00:00 on 2025-07-14.
As of now, the AQI in Granite City, Illinois is 38, indicating Good conditions.
Granite City, Illinois air has the highest levels of PM2.5.
Poor air quality in Granite City, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Granite City, Illinois are currently 6.63 μg/m3.
The PM10 concentration in Granite City, Illinois is 26.878 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Granite City, Illinois is 0.222 ppm.
Currently, Granite City, Illinois has a sulfur dioxide (SO2) concentration of 0.418 ppb.
The current ozone (O3) level in Granite City, Illinois at the moment is 23.43 ppm.
Nitrogen dioxide (NO2) level in Granite City, Illinois at the moment is 8.478 ppb.
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