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

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.01 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.94 μg/m³
0
55
155
255
425
605+
21.50 ppb
0
55
71
86
201
201+
0.27 ppb
0
36
76
186
605
1005+
6.41 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Niles, Illinois
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AQI 21
Good
3.23μg/m³
PM2.5
13.57μg/m³
PM10
22.71ppb
O3
0.38ppb
SO2
10.13ppb
NO2
0.17ppm
CO
AQI 20
Good
3.37μg/m³
PM2.5
15.01μg/m³
PM10
21.85ppb
O3
0.36ppb
SO2
10.71ppb
NO2
0.17ppm
CO
AQI 22
Good
3.15μg/m³
PM2.5
13.31μg/m³
PM10
24.42ppb
O3
0.41ppb
SO2
10.10ppb
NO2
0.17ppm
CO
AQI 21
Good
3.23μg/m³
PM2.5
14.09μg/m³
PM10
23.48ppb
O3
0.41ppb
SO2
10.12ppb
NO2
0.17ppm
CO
AQI 20
Good
3.38μg/m³
PM2.5
15.55μg/m³
PM10
21.86ppb
O3
0.37ppb
SO2
10.53ppb
NO2
0.17ppm
CO
AQI 21
Good
3.24μg/m³
PM2.5
12.92μg/m³
PM10
22.87ppb
O3
0.37ppb
SO2
10.06ppb
NO2
0.17ppm
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 Niles, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Niles, Illinois was at its worst at 04:00:00 on 2026-03-10.
In the last 24 hours, the best air quality in Niles, Illinois was observed at 03:00:00 on 2026-03-11.
As of now, the AQI in Niles, Illinois is 22, indicating Good conditions.
Niles, Illinois air has the highest levels of PM2.5.
Poor air quality in Niles, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Niles, Illinois are currently 4.014 μg/m3.
The PM10 concentration in Niles, Illinois is 13.94 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Niles, Illinois is 0.207 ppm.
Currently, Niles, Illinois has a sulfur dioxide (SO2) concentration of 0.269 ppb.
The current ozone (O3) level in Niles, Illinois at the moment is 21.496 ppm.
Nitrogen dioxide (NO2) level in Niles, Illinois at the moment is 6.406 ppb.
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