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)
73
Moderate
Highland Park, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
21.32 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
94.19 μg/m³
0
55
155
255
425
605+
46.72 ppb
0
55
71
86
201
201+
0.31 ppb
0
36
76
186
605
1005+
4.24 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Highland Park, Illinois
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AQI 75
Moderate
22.34μg/m³
PM2.5
98.82μg/m³
PM10
43.13ppb
O3
0.31ppb
SO2
4.35ppb
NO2
0.26ppm
CO
AQI 75
Moderate
21.66μg/m³
PM2.5
95.52μg/m³
PM10
44.95ppb
O3
0.31ppb
SO2
4.27ppb
NO2
0.26ppm
CO
AQI 75
Moderate
21.88μg/m³
PM2.5
96.56μg/m³
PM10
44.95ppb
O3
0.31ppb
SO2
4.39ppb
NO2
0.26ppm
CO
AQI 75
Moderate
22.46μg/m³
PM2.5
101.56μg/m³
PM10
46.62ppb
O3
0.31ppb
SO2
4.42ppb
NO2
0.26ppm
CO
AQI 79
Moderate
23.97μg/m³
PM2.5
105.29μg/m³
PM10
37.74ppb
O3
0.31ppb
SO2
4.53ppb
NO2
0.26ppm
CO
AQI 79
Moderate
24.07μg/m³
PM2.5
105.76μg/m³
PM10
36.39ppb
O3
0.31ppb
SO2
4.50ppb
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 10:00:00, 2025-06-06.
The best air quality in Highland Park, Illinois was observed at 08:00:00 on 2025-06-07.
The air quality in Highland Park, Illinois right now is Moderate, with an AQI of 73.
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 21.316 μg/m3.
Highland Park, Illinois currently has a PM10 concentration of 94.187 μg/m3.
The current carbon monoxide (CO) level in Highland Park, Illinois is 0.258 ppm.
The current sulfur dioxide (SO2) concentration in Highland Park, Illinois is 0.312 ppb.
Highland Park, Illinois currently has an ozone (O3) concentration of 46.722 ppm.
The current level of nitrogen dioxide (NO2) in Highland Park, Illinois is 4.24 ppb.
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