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)
34
Good
Northbrook, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
0.60 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
1.69 μg/m³
0
55
155
255
425
605+
37.03 ppb
0
55
71
86
201
201+
0.40 ppb
0
36
76
186
605
1005+
2.71 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Northbrook, Illinois
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AQI 33
Good
0.69μg/m³
PM2.5
2.26μg/m³
PM10
36.28ppb
O3
0.40ppb
SO2
2.71ppb
NO2
0.16ppm
CO
AQI 31
Good
0.85μg/m³
PM2.5
3.19μg/m³
PM10
34.05ppb
O3
0.41ppb
SO2
2.71ppb
NO2
0.15ppm
CO
AQI 34
Good
0.58μg/m³
PM2.5
1.51μg/m³
PM10
37.29ppb
O3
0.40ppb
SO2
2.71ppb
NO2
0.16ppm
CO
AQI 33
Good
0.76μg/m³
PM2.5
2.82μg/m³
PM10
36.18ppb
O3
0.41ppb
SO2
2.71ppb
NO2
0.16ppm
CO
AQI 31
Good
0.91μg/m³
PM2.5
3.44μg/m³
PM10
33.73ppb
O3
0.41ppb
SO2
2.72ppb
NO2
0.15ppm
CO
AQI 31
Good
0.96μg/m³
PM2.5
3.75μg/m³
PM10
33.28ppb
O3
0.41ppb
SO2
2.72ppb
NO2
0.15ppm
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 08:00:00 on 2026-03-15.
In the last 24 hours, the best air quality in Northbrook, Illinois was observed at 03:00:00 on 2026-03-15.
As of now, the AQI in Northbrook, Illinois is 34, 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 0.605 μg/m3.
The PM10 concentration in Northbrook, Illinois is 1.687 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Northbrook, Illinois is 0.156 ppm.
Currently, Northbrook, Illinois has a sulfur dioxide (SO2) concentration of 0.401 ppb.
The current ozone (O3) level in Northbrook, Illinois at the moment is 37.033 ppm.
Nitrogen dioxide (NO2) level in Northbrook, Illinois at the moment is 2.708 ppb.
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