Stay updated with real-time air quality in Marion City, Indiana 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
Marion City, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
11.31 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
50.11 μg/m³
0
55
155
255
425
605+
48.39 ppb
0
55
71
86
201
201+
0.98 ppb
0
36
76
186
605
1005+
10.49 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Marion City, Indiana
Marion City, Indiana
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AQI 58
Moderate
13.38μg/m³
PM2.5
60.37μg/m³
PM10
41.49ppb
O3
0.88ppb
SO2
11.63ppb
NO2
0.27ppm
CO
AQI 58
Moderate
13.29μg/m³
PM2.5
36.23μg/m³
PM10
40.33ppb
O3
0.68ppb
SO2
11.23ppb
NO2
0.24ppm
CO
AQI 58
Moderate
12.65μg/m³
PM2.5
55.31μg/m³
PM10
41.03ppb
O3
0.93ppb
SO2
11.37ppb
NO2
0.27ppm
CO
AQI 60
Moderate
13.50μg/m³
PM2.5
43.20μg/m³
PM10
40.97ppb
O3
0.68ppb
SO2
11.13ppb
NO2
0.24ppm
CO
AQI 58
Moderate
13.23μg/m³
PM2.5
44.66μg/m³
PM10
39.12ppb
O3
0.91ppb
SO2
12.39ppb
NO2
0.23ppm
CO
AQI 58
Moderate
12.73μg/m³
PM2.5
53.71μg/m³
PM10
42.12ppb
O3
0.85ppb
SO2
12.01ppb
NO2
0.26ppm
CO
Air quality data and pollutant measurements for Indiana, 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 Marion City, Indiana is updated every hour.
The worst air quality in Marion City, Indiana in the last 24 hours was observed at 02:00:00 on 2026-10-22.
In the last 24 hrs, the best air quality in Marion City, Indiana was observed at 05:00:00 on 2026-10-22.
The current air quality in Marion City, Indiana is 54, categorized as Moderate based on real-time data.
The most common pollutant in Marion City, Indiana is PM2.5.
If the air quality in Marion City, Indiana is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Marion City, Indiana is 11.309 μg/m3.
The current PM10 concentration at Marion City, Indiana is 50.109 μg/m3.
The current carbon monoxide (CO) concentration at Marion City, Indiana is 0.221 ppm.
The current sulfur dioxide (SO2) concentration at Marion City, Indiana is 0.984 ppb.
The current ozone (O3) concentration at Marion City, Indiana is 48.39 ppm.
The current nitrogen dioxide (NO2) concentration at Marion City, Indiana is 10.489 ppb.
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