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)
79
Moderate
Highland Park, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
23.68 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
46.42 μg/m³
0
55
155
255
425
605+
39.68 ppb
0
55
71
86
201
201+
1.51 ppb
0
36
76
186
605
1005+
8.44 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Highland Park, Illinois
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AQI 86
Moderate
27.70μg/m³
PM2.5
75.45μg/m³
PM10
29.21ppb
O3
0.95ppb
SO2
8.60ppb
NO2
0.26ppm
CO
AQI 81
Moderate
25.47μg/m³
PM2.5
54.36μg/m³
PM10
29.87ppb
O3
0.94ppb
SO2
8.62ppb
NO2
0.26ppm
CO
AQI 84
Moderate
26.85μg/m³
PM2.5
76.25μg/m³
PM10
31.05ppb
O3
0.90ppb
SO2
8.59ppb
NO2
0.26ppm
CO
AQI 88
Moderate
29.29μg/m³
PM2.5
89.68μg/m³
PM10
31.28ppb
O3
0.97ppb
SO2
8.36ppb
NO2
0.27ppm
CO
AQI 96
Moderate
33.22μg/m³
PM2.5
126.00μg/m³
PM10
26.57ppb
O3
0.95ppb
SO2
8.58ppb
NO2
0.26ppm
CO
AQI 96
Moderate
32.74μg/m³
PM2.5
125.53μg/m³
PM10
26.39ppb
O3
0.95ppb
SO2
8.59ppb
NO2
0.26ppm
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, 2025-07-14.
The best air quality in Highland Park, Illinois was observed at 09:00:00 on 2025-07-13.
The air quality in Highland Park, Illinois right now is Moderate, with an AQI of 79.
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 23.685 μg/m3.
Highland Park, Illinois currently has a PM10 concentration of 46.423 μg/m3.
The current carbon monoxide (CO) level in Highland Park, Illinois is 0.272 ppm.
The current sulfur dioxide (SO2) concentration in Highland Park, Illinois is 1.515 ppb.
Highland Park, Illinois currently has an ozone (O3) concentration of 39.68 ppm.
The current level of nitrogen dioxide (NO2) in Highland Park, Illinois is 8.438 ppb.
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