Stay updated with real-time air quality in Cary, 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)
62
Moderate
Cary, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
14.80 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
67.00 μg/m³
0
55
155
255
425
605+
37.00 ppb
0
55
71
86
201
201+
0.25 ppb
0
36
76
186
605
1005+
2.96 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Cary, Illinois
Cary, Illinois
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AQI 62
Moderate
14.96μg/m³
PM2.5
67.23μg/m³
PM10
36.98ppb
O3
0.25ppb
SO2
2.96ppb
NO2
0.20ppm
CO
AQI 64
Moderate
15.83μg/m³
PM2.5
70.78μg/m³
PM10
35.95ppb
O3
0.26ppb
SO2
2.96ppb
NO2
0.20ppm
CO
AQI 64
Moderate
15.85μg/m³
PM2.5
70.84μg/m³
PM10
35.99ppb
O3
0.26ppb
SO2
2.96ppb
NO2
0.20ppm
CO
AQI 64
Moderate
15.70μg/m³
PM2.5
64.14μg/m³
PM10
35.84ppb
O3
0.28ppb
SO2
2.98ppb
NO2
0.20ppm
CO
AQI 64
Moderate
16.42μg/m³
PM2.5
72.94μg/m³
PM10
35.17ppb
O3
0.26ppb
SO2
2.97ppb
NO2
0.20ppm
CO
AQI 66
Moderate
16.52μg/m³
PM2.5
66.21μg/m³
PM10
33.94ppb
O3
0.26ppb
SO2
2.98ppb
NO2
0.20ppm
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 Cary, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Cary, Illinois was at its worst at 10:00:00 on 2026-08-14.
In the last 24 hours, the best air quality in Cary, Illinois was observed at 10:00:00 on 2026-08-13.
As of now, the AQI in Cary, Illinois is 62, indicating Moderate conditions.
Cary, Illinois air has the highest levels of PM2.5.
Poor air quality in Cary, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Cary, Illinois are currently 14.8 μg/m3.
The PM10 concentration in Cary, Illinois is 67.001 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Cary, Illinois is 0.2 ppm.
Currently, Cary, Illinois has a sulfur dioxide (SO2) concentration of 0.25 ppb.
The current ozone (O3) level in Cary, Illinois at the moment is 37 ppm.
Nitrogen dioxide (NO2) level in Cary, Illinois at the moment is 2.959 ppb.
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