Stay updated with real-time air quality in Zion, 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)
33
Good
Zion, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.45 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
28.34 μg/m³
0
55
155
255
425
605+
23.66 ppb
0
55
71
86
201
201+
1.30 ppb
0
36
76
186
605
1005+
10.61 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Zion, Illinois
Zion, Illinois
Scroll To Air Quality MapLoading...
AQI 33
Good
5.90μg/m³
PM2.5
25.18μg/m³
PM10
25.92ppb
O3
1.26ppb
SO2
15.23ppb
NO2
0.26ppm
CO
AQI 33
Good
5.97μg/m³
PM2.5
23.27μg/m³
PM10
24.43ppb
O3
1.29ppb
SO2
13.94ppb
NO2
0.26ppm
CO
AQI 33
Good
5.90μg/m³
PM2.5
25.18μg/m³
PM10
25.92ppb
O3
1.26ppb
SO2
15.23ppb
NO2
0.26ppm
CO
AQI 33
Good
5.77μg/m³
PM2.5
25.29μg/m³
PM10
24.62ppb
O3
1.28ppb
SO2
15.54ppb
NO2
0.26ppm
CO
AQI 33
Good
6.08μg/m³
PM2.5
25.78μg/m³
PM10
20.32ppb
O3
1.25ppb
SO2
16.61ppb
NO2
0.28ppm
CO
AQI 38
Good
6.68μg/m³
PM2.5
28.98μg/m³
PM10
22.41ppb
O3
1.26ppb
SO2
9.98ppb
NO2
0.28ppm
CO
Air quality measurements for Illinois, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Zion, Illinois is updated on an hourly basis.
The worst air quality in Zion, Illinois was recorded at 07:00:00 on 2026-01-24.
The best air quality in Zion, Illinois was recorded at 02:00:00 on 2026-01-25.
The real-time air quality index in Zion, Illinois is 33, currently categorized as Good.
The most common pollutant in Zion, Illinois is PM2.5.
If the air quality in Zion, Illinois is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Zion, Illinois at present are 6.454 μg/m3.
The current PM10 levels in Zion, Illinois are 28.335 μg/m3.
The current carbon monoxide (CO) level in Zion, Illinois is 0.263 ppm.
The current sulfur dioxide (SO2) levels in Zion, Illinois are 1.3 ppb.
The current ozone (O3) levels at Zion, Illinois is 23.657 ppm.
The current nitrogen dioxide (NO2) levels at Zion, Illinois is 10.607 ppb.
All Rights Reserved © Ambee Inc. 2025