Stay updated with real-time air quality in Romeoville, 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)
112
Unhealthy for sensitive groups
Romeoville, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
38.80 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
178.15 μg/m³
0
55
155
255
425
605+
21.74 ppb
0
55
71
86
201
201+
0.95 ppb
0
36
76
186
605
1005+
11.30 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Romeoville, Illinois
Romeoville, Illinois
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AQI 112
Unhealthy for sensitive groups
38.56μg/m³
PM2.5
177.91μg/m³
PM10
21.66ppb
O3
0.94ppb
SO2
11.37ppb
NO2
0.23ppm
CO
AQI 113
Unhealthy for sensitive groups
39.26μg/m³
PM2.5
179.00μg/m³
PM10
21.85ppb
O3
0.96ppb
SO2
11.27ppb
NO2
0.22ppm
CO
AQI 118
Unhealthy for sensitive groups
39.48μg/m³
PM2.5
189.43μg/m³
PM10
22.00ppb
O3
0.99ppb
SO2
12.01ppb
NO2
0.22ppm
CO
AQI 108
Unhealthy for sensitive groups
38.24μg/m³
PM2.5
170.28μg/m³
PM10
21.67ppb
O3
0.93ppb
SO2
10.80ppb
NO2
0.23ppm
CO
AQI 112
Unhealthy for sensitive groups
40.24μg/m³
PM2.5
178.42μg/m³
PM10
22.02ppb
O3
0.98ppb
SO2
10.99ppb
NO2
0.22ppm
CO
AQI 108
Unhealthy for sensitive groups
37.85μg/m³
PM2.5
169.25μg/m³
PM10
21.17ppb
O3
0.91ppb
SO2
10.99ppb
NO2
0.23ppm
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 Romeoville, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Romeoville, Illinois was at its worst at 03:00:00 on 2025-07-14.
In the last 24 hours, the best air quality in Romeoville, Illinois was observed at 07:00:00 on 2025-07-13.
As of now, the AQI in Romeoville, Illinois is 112, indicating Unhealthy for Sensitive Groups conditions.
Romeoville, Illinois air has the highest levels of PM10.
Poor air quality in Romeoville, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Romeoville, Illinois are currently 38.803 μg/m3.
The PM10 concentration in Romeoville, Illinois is 178.152 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Romeoville, Illinois is 0.225 ppm.
Currently, Romeoville, Illinois has a sulfur dioxide (SO2) concentration of 0.949 ppb.
The current ozone (O3) level in Romeoville, Illinois at the moment is 21.744 ppm.
Nitrogen dioxide (NO2) level in Romeoville, Illinois at the moment is 11.304 ppb.
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