Stay updated with real-time air quality in Northbrook, 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)
20
Good
Northbrook, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
1.85 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
4.82 μg/m³
0
55
155
255
425
605+
22.12 ppb
0
55
71
86
201
201+
0.24 ppb
0
36
76
186
605
1005+
4.11 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Northbrook, Illinois
Northbrook, Illinois
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AQI 22
Good
3.59μg/m³
PM2.5
11.81μg/m³
PM10
22.80ppb
O3
0.36ppb
SO2
3.28ppb
NO2
0.29ppm
CO
AQI 22
Good
4.43μg/m³
PM2.5
17.76μg/m³
PM10
23.03ppb
O3
0.36ppb
SO2
3.26ppb
NO2
0.29ppm
CO
AQI 21
Good
3.07μg/m³
PM2.5
8.42μg/m³
PM10
22.78ppb
O3
0.36ppb
SO2
3.29ppb
NO2
0.29ppm
CO
AQI 24
Good
3.89μg/m³
PM2.5
13.46μg/m³
PM10
25.57ppb
O3
0.35ppb
SO2
3.46ppb
NO2
0.29ppm
CO
AQI 22
Good
4.37μg/m³
PM2.5
17.31μg/m³
PM10
23.13ppb
O3
0.36ppb
SO2
3.27ppb
NO2
0.29ppm
CO
AQI 27
Good
4.53μg/m³
PM2.5
18.43μg/m³
PM10
23.11ppb
O3
0.36ppb
SO2
3.27ppb
NO2
0.29ppm
CO
Air quality and pollutant data for Illinois, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Northbrook, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Northbrook, Illinois was at its worst at 05:00:00 on 2025-07-16.
In the last 24 hours, the best air quality in Northbrook, Illinois was observed at 04:00:00 on 2025-07-17.
As of now, the AQI in Northbrook, Illinois is 22, indicating Good conditions.
Northbrook, Illinois air has the highest levels of O3.
Poor air quality in Northbrook, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Northbrook, Illinois are currently 2.172 μg/m3.
The PM10 concentration in Northbrook, Illinois is 7.047 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Northbrook, Illinois is 0.319 ppm.
Currently, Northbrook, Illinois has a sulfur dioxide (SO2) concentration of 0.317 ppb.
The current ozone (O3) level in Northbrook, Illinois at the moment is 23.727 ppm.
Nitrogen dioxide (NO2) level in Northbrook, Illinois at the moment is 3.08 ppb.
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