Stay updated with real-time air quality in Winfield, 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)
54
Moderate
Winfield, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
10.93 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
48.68 μg/m³
0
55
155
255
425
605+
19.31 ppb
0
55
71
86
201
201+
0.53 ppb
0
36
76
186
605
1005+
10.03 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Winfield, Illinois
Winfield, Illinois
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AQI 54
Moderate
11.06μg/m³
PM2.5
42.40μg/m³
PM10
20.78ppb
O3
0.58ppb
SO2
6.71ppb
NO2
0.16ppm
CO
AQI 54
Moderate
10.70μg/m³
PM2.5
35.25μg/m³
PM10
19.54ppb
O3
0.57ppb
SO2
6.51ppb
NO2
0.16ppm
CO
AQI 54
Moderate
11.17μg/m³
PM2.5
49.55μg/m³
PM10
20.30ppb
O3
0.54ppb
SO2
6.78ppb
NO2
0.16ppm
CO
AQI 54
Moderate
10.78μg/m³
PM2.5
37.41μg/m³
PM10
20.68ppb
O3
0.58ppb
SO2
6.56ppb
NO2
0.16ppm
CO
AQI 54
Moderate
10.70μg/m³
PM2.5
35.25μg/m³
PM10
19.54ppb
O3
0.57ppb
SO2
6.51ppb
NO2
0.16ppm
CO
AQI 56
Moderate
12.37μg/m³
PM2.5
46.82μg/m³
PM10
19.78ppb
O3
0.57ppb
SO2
6.45ppb
NO2
0.16ppm
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 Winfield, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Winfield, Illinois was at its worst at 11:00:00 on 2025-12-09.
In the last 24 hours, the best air quality in Winfield, Illinois was observed at 06:00:00 on 2025-12-08.
As of now, the AQI in Winfield, Illinois is 56, indicating Moderate conditions.
Winfield, Illinois air has the highest levels of PM2.5.
Poor air quality in Winfield, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Winfield, Illinois are currently 11.711 μg/m3.
The PM10 concentration in Winfield, Illinois is 52.6 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Winfield, Illinois is 0.19 ppm.
Currently, Winfield, Illinois has a sulfur dioxide (SO2) concentration of 0.532 ppb.
The current ozone (O3) level in Winfield, Illinois at the moment is 19.938 ppm.
Nitrogen dioxide (NO2) level in Winfield, Illinois at the moment is 8.002 ppb.
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