Stay updated with real-time air quality in Collinsville, 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)
33
Good
Collinsville, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.44 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
29.32 μg/m³
0
55
155
255
425
605+
26.22 ppb
0
55
71
86
201
201+
0.57 ppb
0
36
76
186
605
1005+
3.69 ppb
0
54
101
361
1250
2050+
0.32 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Collinsville, Illinois
Collinsville, Illinois
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AQI 32
Good
4.94μg/m³
PM2.5
23.02μg/m³
PM10
34.80ppb
O3
0.52ppb
SO2
5.57ppb
NO2
0.21ppm
CO
AQI 28
Good
4.40μg/m³
PM2.5
24.05μg/m³
PM10
29.79ppb
O3
0.58ppb
SO2
5.88ppb
NO2
0.21ppm
CO
AQI 29
Good
4.92μg/m³
PM2.5
24.34μg/m³
PM10
30.52ppb
O3
0.57ppb
SO2
7.02ppb
NO2
0.21ppm
CO
AQI 32
Good
4.87μg/m³
PM2.5
22.88μg/m³
PM10
34.75ppb
O3
0.53ppb
SO2
5.57ppb
NO2
0.21ppm
CO
AQI 29
Good
4.92μg/m³
PM2.5
24.34μg/m³
PM10
30.52ppb
O3
0.57ppb
SO2
7.02ppb
NO2
0.21ppm
CO
AQI 33
Good
6.38μg/m³
PM2.5
29.29μg/m³
PM10
31.14ppb
O3
0.50ppb
SO2
8.57ppb
NO2
0.20ppm
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 Collinsville, Illinois are available every hour.
Collinsville, Illinois experienced its worst air quality at 01:00:00, 2025-09-01.
The best air quality in Collinsville, Illinois was observed at 04:00:00 on 2025-09-01.
The air quality in Collinsville, Illinois right now is Good, with an AQI of 31.
In Collinsville, Illinois, O3 is the most frequently found pollutant.
When air quality in Collinsville, Illinois is compromised, staying indoors and wearing a mask can reduce health risks.
Collinsville, Illinois currently has a PM2.5 concentration of 5.057 μg/m3.
Collinsville, Illinois currently has a PM10 concentration of 24.078 μg/m3.
The current carbon monoxide (CO) level in Collinsville, Illinois is 0.206 ppm.
The current sulfur dioxide (SO2) concentration in Collinsville, Illinois is 0.527 ppb.
Collinsville, Illinois currently has an ozone (O3) concentration of 34.342 ppm.
The current level of nitrogen dioxide (NO2) in Collinsville, Illinois is 6.097 ppb.
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