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

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.13 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
29.55 μg/m³
0
55
155
255
425
605+
38.26 ppb
0
55
71
86
201
201+
1.04 ppb
0
36
76
186
605
1005+
13.22 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Highland Park, Illinois
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AQI 38
Good
7.06μg/m³
PM2.5
29.61μg/m³
PM10
36.67ppb
O3
1.07ppb
SO2
11.89ppb
NO2
0.17ppm
CO
AQI 38
Good
7.21μg/m³
PM2.5
29.79μg/m³
PM10
37.29ppb
O3
1.06ppb
SO2
11.91ppb
NO2
0.17ppm
CO
AQI 38
Good
6.77μg/m³
PM2.5
28.18μg/m³
PM10
37.58ppb
O3
1.05ppb
SO2
11.65ppb
NO2
0.17ppm
CO
AQI 38
Good
6.76μg/m³
PM2.5
28.40μg/m³
PM10
37.13ppb
O3
1.09ppb
SO2
11.79ppb
NO2
0.17ppm
CO
AQI 38
Good
6.75μg/m³
PM2.5
29.29μg/m³
PM10
34.85ppb
O3
1.08ppb
SO2
11.87ppb
NO2
0.17ppm
CO
AQI 38
Good
6.72μg/m³
PM2.5
29.25μg/m³
PM10
35.47ppb
O3
1.08ppb
SO2
11.87ppb
NO2
0.17ppm
CO
The air quality data for Illinois, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Highland Park, Illinois are available every hour.
Highland Park, Illinois experienced its worst air quality at 12:00:00, 2026-10-07.
The best air quality in Highland Park, Illinois was observed at 11:00:00 on 2026-10-06.
The air quality in Highland Park, Illinois right now is Good, with an AQI of 38.
In Highland Park, Illinois, PM2.5 is the most frequently found pollutant.
When air quality in Highland Park, Illinois is compromised, staying indoors and wearing a mask can reduce health risks.
Highland Park, Illinois currently has a PM2.5 concentration of 7.131 μg/m3.
Highland Park, Illinois currently has a PM10 concentration of 29.551 μg/m3.
The current carbon monoxide (CO) level in Highland Park, Illinois is 0.237 ppm.
The current sulfur dioxide (SO2) concentration in Highland Park, Illinois is 1.04 ppb.
Highland Park, Illinois currently has an ozone (O3) concentration of 38.256 ppm.
The current level of nitrogen dioxide (NO2) in Highland Park, Illinois is 13.225 ppb.
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