Stay updated with real-time air quality in Marietta, Ohio 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)
56
Moderate
Marietta, Ohio
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
11.63 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
33.27 μg/m³
0
55
155
255
425
605+
31.98 ppb
0
55
71
86
201
201+
1.56 ppb
0
36
76
186
605
1005+
4.80 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Marietta, Ohio
Scroll To Air Quality MapLoading...
AQI 79
Moderate
24.50μg/m³
PM2.5
61.13μg/m³
PM10
17.00ppb
O3
1.78ppb
SO2
8.72ppb
NO2
0.24ppm
CO
AQI 79
Moderate
24.47μg/m³
PM2.5
63.18μg/m³
PM10
16.65ppb
O3
1.78ppb
SO2
8.65ppb
NO2
0.25ppm
CO
AQI 81
Moderate
24.66μg/m³
PM2.5
86.00μg/m³
PM10
15.44ppb
O3
1.87ppb
SO2
11.13ppb
NO2
0.30ppm
CO
AQI 77
Moderate
23.36μg/m³
PM2.5
85.71μg/m³
PM10
17.59ppb
O3
1.82ppb
SO2
7.44ppb
NO2
0.24ppm
CO
AQI 69
Moderate
19.07μg/m³
PM2.5
57.09μg/m³
PM10
15.94ppb
O3
1.78ppb
SO2
7.95ppb
NO2
0.24ppm
CO
AQI 56
Moderate
12.35μg/m³
PM2.5
33.29μg/m³
PM10
17.49ppb
O3
1.42ppb
SO2
8.26ppb
NO2
0.22ppm
CO
Air quality data and pollutant measurements for Ohio, 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 Marietta, Ohio is updated every hour.
The worst air quality in Marietta, Ohio in the last 24 hours was observed at 04:00:00 on 2025-07-21.
In the last 24 hrs, the best air quality in Marietta, Ohio was observed at 03:00:00 on 2025-07-21.
The current air quality in Marietta, Ohio is 73, categorized as Moderate based on real-time data.
The most common pollutant in Marietta, Ohio is PM2.5.
If the air quality in Marietta, Ohio is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Marietta, Ohio is 21.497 μg/m3.
The current PM10 concentration at Marietta, Ohio is 92.794 μg/m3.
The current carbon monoxide (CO) concentration at Marietta, Ohio is 0.243 ppm.
The current sulfur dioxide (SO2) concentration at Marietta, Ohio is 1.612 ppb.
The current ozone (O3) concentration at Marietta, Ohio is 16.002 ppm.
The current nitrogen dioxide (NO2) concentration at Marietta, Ohio is 9.753 ppb.
All Rights Reserved © Ambee Inc. 2025