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)
16
Good
Romeoville, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
3.36 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.80 μg/m³
0
55
155
255
425
605+
14.51 ppb
0
55
71
86
201
201+
0.76 ppb
0
36
76
186
605
1005+
6.94 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Romeoville, Illinois
Romeoville, Illinois
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AQI 16
Good
3.43μg/m³
PM2.5
14.12μg/m³
PM10
14.27ppb
O3
0.76ppb
SO2
6.95ppb
NO2
0.14ppm
CO
AQI 16
Good
3.26μg/m³
PM2.5
13.39μg/m³
PM10
14.51ppb
O3
0.77ppb
SO2
6.97ppb
NO2
0.13ppm
CO
AQI 22
Good
3.72μg/m³
PM2.5
14.95μg/m³
PM10
16.00ppb
O3
0.77ppb
SO2
6.98ppb
NO2
0.13ppm
CO
AQI 16
Good
3.09μg/m³
PM2.5
12.82μg/m³
PM10
13.98ppb
O3
0.76ppb
SO2
6.90ppb
NO2
0.13ppm
CO
AQI 16
Good
2.94μg/m³
PM2.5
12.18μg/m³
PM10
14.10ppb
O3
0.77ppb
SO2
7.02ppb
NO2
0.13ppm
CO
AQI 16
Good
3.27μg/m³
PM2.5
13.76μg/m³
PM10
12.18ppb
O3
0.76ppb
SO2
7.00ppb
NO2
0.14ppm
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 01:00:00 on 2025-09-05.
In the last 24 hours, the best air quality in Romeoville, Illinois was observed at 10:00:00 on 2025-09-06.
As of now, the AQI in Romeoville, Illinois is 16, indicating Good conditions.
Romeoville, Illinois air has the highest levels of PM2.5.
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 3.358 μg/m3.
The PM10 concentration in Romeoville, Illinois is 13.796 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Romeoville, Illinois is 0.133 ppm.
Currently, Romeoville, Illinois has a sulfur dioxide (SO2) concentration of 0.764 ppb.
The current ozone (O3) level in Romeoville, Illinois at the moment is 14.511 ppm.
Nitrogen dioxide (NO2) level in Romeoville, Illinois at the moment is 6.944 ppb.
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