Stay updated with real-time air quality in Herrin, 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
Herrin, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
11.43 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
44.49 μg/m³
0
55
155
255
425
605+
35.83 ppb
0
55
71
86
201
201+
0.57 ppb
0
36
76
186
605
1005+
2.30 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Herrin, Illinois
Herrin, Illinois
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AQI 56
Moderate
11.88μg/m³
PM2.5
35.47μg/m³
PM10
14.09ppb
O3
0.55ppb
SO2
8.51ppb
NO2
0.25ppm
CO
AQI 33
Good
6.17μg/m³
PM2.5
24.60μg/m³
PM10
16.20ppb
O3
0.59ppb
SO2
8.70ppb
NO2
0.26ppm
CO
AQI 33
Good
5.52μg/m³
PM2.5
25.05μg/m³
PM10
10.37ppb
O3
0.83ppb
SO2
8.65ppb
NO2
0.28ppm
CO
AQI 44
Good
8.03μg/m³
PM2.5
33.97μg/m³
PM10
10.72ppb
O3
0.60ppb
SO2
9.18ppb
NO2
0.27ppm
CO
AQI 38
Good
7.08μg/m³
PM2.5
30.91μg/m³
PM10
14.70ppb
O3
0.60ppb
SO2
8.87ppb
NO2
0.27ppm
CO
AQI 33
Good
6.04μg/m³
PM2.5
24.66μg/m³
PM10
20.27ppb
O3
0.59ppb
SO2
10.71ppb
NO2
0.28ppm
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 Herrin, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Herrin, Illinois was at its worst at 12:00:00 on 2025-07-10.
In the last 24 hours, the best air quality in Herrin, Illinois was observed at 04:00:00 on 2025-07-09.
As of now, the AQI in Herrin, Illinois is 54, indicating Moderate conditions.
Herrin, Illinois air has the highest levels of PM2.5.
Poor air quality in Herrin, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Herrin, Illinois are currently 10.72 μg/m3.
The PM10 concentration in Herrin, Illinois is 38.351 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Herrin, Illinois is 0.257 ppm.
Currently, Herrin, Illinois has a sulfur dioxide (SO2) concentration of 0.55 ppb.
The current ozone (O3) level in Herrin, Illinois at the moment is 14.826 ppm.
Nitrogen dioxide (NO2) level in Herrin, Illinois at the moment is 9.029 ppb.
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