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

Good
Fine
Moderate
Poor
Very poor
Hazardous
11.01 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
42.73 μg/m³
0
55
155
255
425
605+
45.68 ppb
0
55
71
86
201
201+
2.31 ppb
0
36
76
186
605
1005+
3.81 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Sterling, Illinois
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AQI 52
Moderate
9.52μg/m³
PM2.5
46.12μg/m³
PM10
47.19ppb
O3
2.24ppb
SO2
4.90ppb
NO2
0.18ppm
CO
AQI 54
Moderate
10.60μg/m³
PM2.5
48.24μg/m³
PM10
45.10ppb
O3
2.83ppb
SO2
3.48ppb
NO2
0.20ppm
CO
AQI 49
Good
8.82μg/m³
PM2.5
43.26μg/m³
PM10
49.28ppb
O3
2.20ppb
SO2
2.78ppb
NO2
0.18ppm
CO
AQI 54
Moderate
10.58μg/m³
PM2.5
43.38μg/m³
PM10
46.49ppb
O3
1.99ppb
SO2
3.50ppb
NO2
0.18ppm
CO
AQI 52
Moderate
9.96μg/m³
PM2.5
43.90μg/m³
PM10
44.77ppb
O3
1.01ppb
SO2
3.11ppb
NO2
0.20ppm
CO
AQI 49
Good
8.50μg/m³
PM2.5
36.99μg/m³
PM10
45.13ppb
O3
1.04ppb
SO2
3.55ppb
NO2
0.21ppm
CO
Air quality measurements for Illinois, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Sterling, Illinois is updated on an hourly basis.
The worst air quality in Sterling, Illinois was recorded at 02:00:00 on 2026-04-23.
The best air quality in Sterling, Illinois was recorded at 07:00:00 on 2026-04-23.
The real-time air quality index in Sterling, Illinois is 54, currently categorized as Moderate.
The most common pollutant in Sterling, Illinois is PM2.5.
If the air quality in Sterling, Illinois is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Sterling, Illinois at present are 11.01 μg/m3.
The current PM10 levels in Sterling, Illinois are 42.728 μg/m3.
The current carbon monoxide (CO) level in Sterling, Illinois is 0.183 ppm.
The current sulfur dioxide (SO2) levels in Sterling, Illinois are 2.306 ppb.
The current ozone (O3) levels at Sterling, Illinois is 45.683 ppm.
The current nitrogen dioxide (NO2) levels at Sterling, Illinois is 3.806 ppb.
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