Stay updated with real-time air quality in Marion, Iowa 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)
38
Good
Marion, Iowa
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.52 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.93 μg/m³
0
55
155
255
425
605+
40.87 ppb
0
55
71
86
201
201+
0.14 ppb
0
36
76
186
605
1005+
3.18 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Marion, Iowa
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AQI 30
Good
4.70μg/m³
PM2.5
21.00μg/m³
PM10
32.00ppb
O3
0.10ppb
SO2
3.69ppb
NO2
0.24ppm
CO
AQI 30
Good
5.04μg/m³
PM2.5
21.90μg/m³
PM10
32.49ppb
O3
0.34ppb
SO2
3.18ppb
NO2
0.23ppm
CO
AQI 31
Good
5.09μg/m³
PM2.5
22.04μg/m³
PM10
32.62ppb
O3
0.40ppb
SO2
3.04ppb
NO2
0.22ppm
CO
AQI 31
Good
5.11μg/m³
PM2.5
22.05μg/m³
PM10
32.80ppb
O3
0.45ppb
SO2
2.87ppb
NO2
0.21ppm
CO
AQI 54
Moderate
11.22μg/m³
PM2.5
49.61μg/m³
PM10
29.18ppb
O3
0.42ppb
SO2
4.24ppb
NO2
0.27ppm
CO
AQI 44
Good
7.58μg/m³
PM2.5
33.93μg/m³
PM10
32.74ppb
O3
0.62ppb
SO2
2.80ppb
NO2
0.19ppm
CO
Air quality measurements for Iowa, 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 Marion, Iowa is updated on an hourly basis.
The worst air quality in Marion, Iowa was recorded at 11:00:00 on 2026-03-08.
The best air quality in Marion, Iowa was recorded at 03:00:00 on 2026-03-09.
The real-time air quality index in Marion, Iowa is 33, currently categorized as Good.
The most common pollutant in Marion, Iowa is O3.
If the air quality in Marion, Iowa is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Marion, Iowa at present are 4.647 μg/m3.
The current PM10 levels in Marion, Iowa are 20.173 μg/m3.
The current carbon monoxide (CO) level in Marion, Iowa is 0.203 ppm.
The current sulfur dioxide (SO2) levels in Marion, Iowa are 0.127 ppb.
The current ozone (O3) levels at Marion, Iowa is 35.878 ppm.
The current nitrogen dioxide (NO2) levels at Marion, Iowa is 3.653 ppb.
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