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)
38
Good
Arlington Heights, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.94 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
25.89 μg/m³
0
55
155
255
425
605+
13.68 ppb
0
55
71
86
201
201+
1.41 ppb
0
36
76
186
605
1005+
18.29 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Arlington Heights, Illinois
Arlington Heights, Illinois
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AQI 38
Good
6.97μg/m³
PM2.5
30.34μg/m³
PM10
12.64ppb
O3
1.11ppb
SO2
24.94ppb
NO2
0.29ppm
CO
AQI 44
Good
7.77μg/m³
PM2.5
31.72μg/m³
PM10
14.56ppb
O3
1.12ppb
SO2
22.74ppb
NO2
0.29ppm
CO
AQI 44
Good
8.08μg/m³
PM2.5
33.97μg/m³
PM10
13.90ppb
O3
1.12ppb
SO2
22.80ppb
NO2
0.29ppm
CO
AQI 33
Good
6.27μg/m³
PM2.5
16.54μg/m³
PM10
12.80ppb
O3
1.11ppb
SO2
21.45ppb
NO2
0.29ppm
CO
AQI 38
Good
7.45μg/m³
PM2.5
29.26μg/m³
PM10
15.41ppb
O3
1.12ppb
SO2
22.61ppb
NO2
0.29ppm
CO
AQI 33
Good
5.96μg/m³
PM2.5
24.80μg/m³
PM10
14.02ppb
O3
1.12ppb
SO2
19.00ppb
NO2
0.30ppm
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 2026-01-24.
In the last 24 hrs, the best air quality in Arlington Heights, Illinois was observed at 03:00:00 on 2026-01-24.
The current air quality in Arlington Heights, Illinois is 38, categorized as Good based on real-time data.
The most common pollutant in Arlington Heights, Illinois is PM2.5.
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 6.941 μg/m3.
The current PM10 concentration at Arlington Heights, Illinois is 25.892 μg/m3.
The current carbon monoxide (CO) concentration at Arlington Heights, Illinois is 0.251 ppm.
The current sulfur dioxide (SO2) concentration at Arlington Heights, Illinois is 1.405 ppb.
The current ozone (O3) concentration at Arlington Heights, Illinois is 13.676 ppm.
The current nitrogen dioxide (NO2) concentration at Arlington Heights, Illinois is 18.291 ppb.
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