Stay updated with real-time air quality in Normal, 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
Normal, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
2.20 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.00 μg/m³
0
55
155
255
425
605+
24.00 ppb
0
55
71
86
201
201+
0.33 ppb
0
36
76
186
605
1005+
2.65 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Normal, Illinois
Normal, Illinois
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AQI 22
Good
2.21μg/m³
PM2.5
9.06μg/m³
PM10
23.98ppb
O3
0.33ppb
SO2
2.66ppb
NO2
0.12ppm
CO
AQI 22
Good
2.37μg/m³
PM2.5
8.37μg/m³
PM10
23.54ppb
O3
0.32ppb
SO2
3.32ppb
NO2
0.12ppm
CO
AQI 22
Good
2.45μg/m³
PM2.5
12.22μg/m³
PM10
23.68ppb
O3
0.31ppb
SO2
3.39ppb
NO2
0.12ppm
CO
AQI 19
Good
1.94μg/m³
PM2.5
8.54μg/m³
PM10
20.64ppb
O3
0.45ppb
SO2
1.73ppb
NO2
0.15ppm
CO
AQI 20
Good
2.89μg/m³
PM2.5
11.43μg/m³
PM10
21.81ppb
O3
0.30ppb
SO2
3.57ppb
NO2
0.13ppm
CO
AQI 22
Good
2.82μg/m³
PM2.5
12.05μg/m³
PM10
23.94ppb
O3
0.35ppb
SO2
3.31ppb
NO2
0.12ppm
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 Normal, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Normal, Illinois was at its worst at 09:00:00 on 2025-10-21.
In the last 24 hours, the best air quality in Normal, Illinois was observed at 01:00:00 on 2025-10-21.
As of now, the AQI in Normal, Illinois is 22, indicating Good conditions.
Normal, Illinois air has the highest levels of O3.
Poor air quality in Normal, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Normal, Illinois are currently 2.201 μg/m3.
The PM10 concentration in Normal, Illinois is 9.004 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Normal, Illinois is 0.115 ppm.
Currently, Normal, Illinois has a sulfur dioxide (SO2) concentration of 0.329 ppb.
The current ozone (O3) level in Normal, Illinois at the moment is 23.999 ppm.
Nitrogen dioxide (NO2) level in Normal, Illinois at the moment is 2.653 ppb.
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