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)
64
Moderate
Arlington Heights, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
15.68 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
70.62 μg/m³
0
55
155
255
425
605+
26.38 ppb
0
55
71
86
201
201+
2.69 ppb
0
36
76
186
605
1005+
1.99 ppb
0
54
101
361
1250
2050+
0.22 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 64
Moderate
15.57μg/m³
PM2.5
69.97μg/m³
PM10
27.32ppb
O3
2.62ppb
SO2
2.01ppb
NO2
0.22ppm
CO
AQI 62
Moderate
14.68μg/m³
PM2.5
56.26μg/m³
PM10
28.36ppb
O3
3.07ppb
SO2
2.24ppb
NO2
0.22ppm
CO
AQI 62
Moderate
14.72μg/m³
PM2.5
59.16μg/m³
PM10
28.10ppb
O3
3.07ppb
SO2
2.26ppb
NO2
0.22ppm
CO
AQI 66
Moderate
17.03μg/m³
PM2.5
52.28μg/m³
PM10
28.76ppb
O3
2.50ppb
SO2
2.06ppb
NO2
0.22ppm
CO
AQI 62
Moderate
14.62μg/m³
PM2.5
52.86μg/m³
PM10
28.62ppb
O3
3.05ppb
SO2
2.22ppb
NO2
0.22ppm
CO
AQI 64
Moderate
16.48μg/m³
PM2.5
48.47μg/m³
PM10
28.29ppb
O3
2.50ppb
SO2
2.10ppb
NO2
0.23ppm
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 05:00:00 on 2026-08-23.
In the last 24 hrs, the best air quality in Arlington Heights, Illinois was observed at 03:00:00 on 2026-08-23.
The current air quality in Arlington Heights, Illinois is 64, categorized as Moderate 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 15.679 μg/m3.
The current PM10 concentration at Arlington Heights, Illinois is 70.619 μg/m3.
The current carbon monoxide (CO) concentration at Arlington Heights, Illinois is 0.222 ppm.
The current sulfur dioxide (SO2) concentration at Arlington Heights, Illinois is 2.694 ppb.
The current ozone (O3) concentration at Arlington Heights, Illinois is 26.384 ppm.
The current nitrogen dioxide (NO2) concentration at Arlington Heights, Illinois is 1.994 ppb.
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