Stay updated with real-time air quality in Bloomington, 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)
40
Good
Bloomington, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.92 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.06 μg/m³
0
55
155
255
425
605+
43.02 ppb
0
55
71
86
201
201+
0.87 ppb
0
36
76
186
605
1005+
2.81 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Bloomington, Illinois
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AQI 40
Good
3.90μg/m³
PM2.5
17.00μg/m³
PM10
43.00ppb
O3
0.87ppb
SO2
2.81ppb
NO2
0.17ppm
CO
AQI 40
Good
4.64μg/m³
PM2.5
19.64μg/m³
PM10
42.96ppb
O3
0.82ppb
SO2
2.73ppb
NO2
0.14ppm
CO
AQI 39
Good
4.63μg/m³
PM2.5
22.55μg/m³
PM10
42.48ppb
O3
0.82ppb
SO2
2.71ppb
NO2
0.14ppm
CO
AQI 41
Good
4.40μg/m³
PM2.5
19.21μg/m³
PM10
43.76ppb
O3
0.86ppb
SO2
2.87ppb
NO2
0.18ppm
CO
AQI 44
Good
5.03μg/m³
PM2.5
21.30μg/m³
PM10
47.12ppb
O3
0.81ppb
SO2
2.68ppb
NO2
0.14ppm
CO
AQI 41
Good
5.24μg/m³
PM2.5
26.36μg/m³
PM10
43.80ppb
O3
0.78ppb
SO2
2.67ppb
NO2
0.14ppm
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 Bloomington, Illinois are available every hour.
Bloomington, Illinois experienced its worst air quality at 10:00:00, 2026-07-23.
The best air quality in Bloomington, Illinois was observed at 03:00:00 on 2026-07-23.
The air quality in Bloomington, Illinois right now is Good, with an AQI of 40.
In Bloomington, Illinois, O3 is the most frequently found pollutant.
When air quality in Bloomington, Illinois is compromised, staying indoors and wearing a mask can reduce health risks.
Bloomington, Illinois currently has a PM2.5 concentration of 3.916 μg/m3.
Bloomington, Illinois currently has a PM10 concentration of 17.059 μg/m3.
The current carbon monoxide (CO) level in Bloomington, Illinois is 0.173 ppm.
The current sulfur dioxide (SO2) concentration in Bloomington, Illinois is 0.868 ppb.
Bloomington, Illinois currently has an ozone (O3) concentration of 43.025 ppm.
The current level of nitrogen dioxide (NO2) in Bloomington, Illinois is 2.807 ppb.
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