Stay updated with real-time air quality in Swansea, 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)
49
Good
Swansea, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
9.32 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
38.37 μg/m³
0
55
155
255
425
605+
30.63 ppb
0
55
71
86
201
201+
0.79 ppb
0
36
76
186
605
1005+
4.05 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Swansea, Illinois
Swansea, Illinois
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AQI 38
Good
6.61μg/m³
PM2.5
31.43μg/m³
PM10
16.54ppb
O3
0.74ppb
SO2
5.29ppb
NO2
0.13ppm
CO
AQI 27
Good
5.00μg/m³
PM2.5
21.39μg/m³
PM10
16.79ppb
O3
0.67ppb
SO2
5.14ppb
NO2
0.12ppm
CO
AQI 38
Good
6.55μg/m³
PM2.5
30.82μg/m³
PM10
16.76ppb
O3
0.73ppb
SO2
5.38ppb
NO2
0.13ppm
CO
AQI 38
Good
6.55μg/m³
PM2.5
30.82μg/m³
PM10
16.76ppb
O3
0.73ppb
SO2
5.38ppb
NO2
0.13ppm
CO
AQI 33
Good
6.45μg/m³
PM2.5
29.47μg/m³
PM10
15.71ppb
O3
0.64ppb
SO2
5.71ppb
NO2
0.12ppm
CO
AQI 38
Good
7.10μg/m³
PM2.5
31.81μg/m³
PM10
7.22ppb
O3
0.50ppb
SO2
8.62ppb
NO2
0.10ppm
CO
Air quality data and pollutant measurements for Illinois, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Swansea, Illinois is updated every hour.
The worst air quality in Swansea, Illinois in the last 24 hours was observed at 05:00:00 on 2025-07-16.
In the last 24 hrs, the best air quality in Swansea, Illinois was observed at 09:00:00 on 2025-07-17.
The current air quality in Swansea, Illinois is 27, categorized as Good based on real-time data.
The most common pollutant in Swansea, Illinois is PM2.5.
If the air quality in Swansea, Illinois is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Swansea, Illinois is 5.404 μg/m3.
The current PM10 concentration at Swansea, Illinois is 19.704 μg/m3.
The current carbon monoxide (CO) concentration at Swansea, Illinois is 0.121 ppm.
The current sulfur dioxide (SO2) concentration at Swansea, Illinois is 0.695 ppb.
The current ozone (O3) concentration at Swansea, Illinois is 15.825 ppm.
The current nitrogen dioxide (NO2) concentration at Swansea, Illinois is 4.991 ppb.
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