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)
54
Moderate
Granite City, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
10.68 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
38.42 μg/m³
0
55
155
255
425
605+
7.49 ppb
0
55
71
86
201
201+
0.44 ppb
0
36
76
186
605
1005+
20.73 ppb
0
54
101
361
1250
2050+
0.37 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Granite City, Illinois
Granite City, Illinois
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AQI 52
Moderate
10.16μg/m³
PM2.5
36.15μg/m³
PM10
3.76ppb
O3
0.32ppb
SO2
17.10ppb
NO2
0.34ppm
CO
AQI 60
Moderate
14.43μg/m³
PM2.5
64.33μg/m³
PM10
2.01ppb
O3
0.31ppb
SO2
16.90ppb
NO2
0.35ppm
CO
AQI 56
Moderate
12.02μg/m³
PM2.5
36.78μg/m³
PM10
2.08ppb
O3
0.24ppb
SO2
21.58ppb
NO2
0.32ppm
CO
AQI 52
Moderate
10.11μg/m³
PM2.5
34.77μg/m³
PM10
2.81ppb
O3
0.36ppb
SO2
20.46ppb
NO2
0.39ppm
CO
AQI 44
Good
8.10μg/m³
PM2.5
37.48μg/m³
PM10
6.75ppb
O3
0.46ppb
SO2
11.17ppb
NO2
0.39ppm
CO
AQI 52
Moderate
9.81μg/m³
PM2.5
36.28μg/m³
PM10
3.66ppb
O3
0.41ppb
SO2
18.49ppb
NO2
0.40ppm
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 08:00:00 on 2025-06-05.
In the last 24 hours, the best air quality in Granite City, Illinois was observed at 02:00:00 on 2025-06-05.
As of now, the AQI in Granite City, Illinois is 54, indicating Moderate 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 10.678 μg/m3.
The PM10 concentration in Granite City, Illinois is 38.416 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Granite City, Illinois is 0.369 ppm.
Currently, Granite City, Illinois has a sulfur dioxide (SO2) concentration of 0.441 ppb.
The current ozone (O3) level in Granite City, Illinois at the moment is 7.488 ppm.
Nitrogen dioxide (NO2) level in Granite City, Illinois at the moment is 20.727 ppb.
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