Stay updated with real-time air quality in Arlington Heights, 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)
43
Good
Arlington Heights, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.02 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.40 μg/m³
0
55
155
255
425
605+
46.19 ppb
0
55
71
86
201
201+
0.44 ppb
0
36
76
186
605
1005+
2.39 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Arlington Heights, Illinois
Arlington Heights, Illinois
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AQI 44
Good
4.14μg/m³
PM2.5
17.20μg/m³
PM10
47.96ppb
O3
0.43ppb
SO2
2.42ppb
NO2
0.20ppm
CO
AQI 43
Good
3.85μg/m³
PM2.5
17.08μg/m³
PM10
45.76ppb
O3
0.46ppb
SO2
2.25ppb
NO2
0.20ppm
CO
AQI 42
Good
3.85μg/m³
PM2.5
17.09μg/m³
PM10
45.16ppb
O3
0.46ppb
SO2
2.25ppb
NO2
0.20ppm
CO
AQI 44
Good
4.14μg/m³
PM2.5
17.11μg/m³
PM10
47.09ppb
O3
0.43ppb
SO2
2.48ppb
NO2
0.20ppm
CO
AQI 43
Good
3.83μg/m³
PM2.5
17.03μg/m³
PM10
46.41ppb
O3
0.46ppb
SO2
2.27ppb
NO2
0.20ppm
CO
AQI 42
Good
3.97μg/m³
PM2.5
17.11μg/m³
PM10
44.82ppb
O3
0.42ppb
SO2
2.53ppb
NO2
0.20ppm
CO
Air quality data and pollutant measurements for Illinois, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Arlington Heights, Illinois is updated every hour.
The worst air quality in Arlington Heights, Illinois in the last 24 hours was observed at 08:00:00 on 2026-06-13.
In the last 24 hrs, the best air quality in Arlington Heights, Illinois was observed at 01:00:00 on 2026-06-13.
The current air quality in Arlington Heights, Illinois is 43, categorized as Good based on real-time data.
The most common pollutant in Arlington Heights, Illinois is O3.
If the air quality in Arlington Heights, Illinois is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Arlington Heights, Illinois is 4.018 μg/m3.
The current PM10 concentration at Arlington Heights, Illinois is 17.397 μg/m3.
The current carbon monoxide (CO) concentration at Arlington Heights, Illinois is 0.201 ppm.
The current sulfur dioxide (SO2) concentration at Arlington Heights, Illinois is 0.439 ppb.
The current ozone (O3) concentration at Arlington Heights, Illinois is 46.188 ppm.
The current nitrogen dioxide (NO2) concentration at Arlington Heights, Illinois is 2.389 ppb.
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