Real-time air quality index in Westerville, Ohio today
Stay updated with real-time air quality in Westerville, 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)
21
Good
Westerville, Ohio
Last updated: ... (Local time)
Common air pollutants in Westerville, Ohio
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
2.25 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
9.77 μg/m³
0
55
155
255
425
605+
Ozone (O3)
23.41 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
1.43 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
9.36 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Westerville, Ohio
Westerville, Ohio
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Westerville, Ohio air quality map: Real-time AQI near you
Air quality in nearby cities
Worthington, Ohio
AQI 22
Good
2.23μg/m³
PM2.5
9.04μg/m³
PM10
23.68ppb
O3
1.43ppb
SO2
9.77ppb
NO2
0.20ppm
CO
New Albany, Ohio
AQI 20
Good
3.27μg/m³
PM2.5
14.83μg/m³
PM10
21.98ppb
O3
1.42ppb
SO2
9.24ppb
NO2
0.19ppm
CO
Powell, Ohio
AQI 21
Good
2.17μg/m³
PM2.5
9.15μg/m³
PM10
23.31ppb
O3
1.41ppb
SO2
9.88ppb
NO2
0.20ppm
CO
Gahanna, Ohio
AQI 20
Good
2.81μg/m³
PM2.5
11.96μg/m³
PM10
22.41ppb
O3
1.43ppb
SO2
9.38ppb
NO2
0.19ppm
CO
Upper Arlington, Ohio
AQI 21
Good
2.38μg/m³
PM2.5
9.88μg/m³
PM10
23.23ppb
O3
1.43ppb
SO2
9.68ppb
NO2
0.20ppm
CO
Dublin, Ohio
AQI 21
Good
2.17μg/m³
PM2.5
9.16μg/m³
PM10
23.23ppb
O3
1.42ppb
SO2
9.89ppb
NO2
0.20ppm
CO
How accurate is Ohio, USA air quality data?
Air quality measurements for Ohio, 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
Frequently asked questions
How frequently is the air quality data for Westerville, Ohio updated?
Air quality data for Westerville, Ohio is updated on an hourly basis.
When did Westerville, Ohio experience the worst air quality in the last 24 hours?
The worst air quality in Westerville, Ohio was recorded at 11:00:00 on 2025-10-21.
When did Westerville, Ohio have its best air quality in the last 24 hours?
The best air quality in Westerville, Ohio was recorded at 12:00:00 on 2025-10-22.
What is the real-time air quality index for Westerville, Ohio?
The real-time air quality index in Westerville, Ohio is 21, currently categorized as Good.
Which pollutant is found most often in Westerville, Ohio?
The most common pollutant in Westerville, Ohio is O3.
What can I do if the air quality in Westerville, Ohio is poor?
If the air quality in Westerville, Ohio is poor, limit outdoor activities and use a mask to safeguard your health.
What are the current PM2.5 levels in Westerville, Ohio?
The measured PM2.5 levels in Westerville, Ohio at present are 2.246 μg/m3.
What are the current PM10 levels at Westerville, Ohio?
The current PM10 levels in Westerville, Ohio are 9.772 μg/m3.
What are the current carbon monoxide (CO) levels at Westerville, Ohio?
The current carbon monoxide (CO) level in Westerville, Ohio is 0.271 ppm.
What are the current sulfur dioxide (SO2) levels at Westerville, Ohio?
The current sulfur dioxide (SO2) levels in Westerville, Ohio are 1.427 ppb.
What are the current ozone (O3) levels at Westerville, Ohio?
The current ozone (O3) levels at Westerville, Ohio is 23.406 ppm.
What are the current nitrogen dioxide (NO2) levels at Westerville, Ohio?
The current nitrogen dioxide (NO2) levels at Westerville, Ohio is 9.36 ppb.
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