Air Quality in Westerville, United States
Drizzle
19.8°C · 82.7% humidity
19.8°
Feels 19.8°
28
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Westerville's air quality — share it
AQI Forecast
54
10am
27
27
28
1pm
25
25
25
4pm
25
25
25
7pm
25
27
27
10pm
27
27
27
1am
27
27
27
4am
25
25
25
7am
25
24
Air Quality Index Trend
38h · 2 stnWesterville's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
82.7%
Humidity
44.8 km/h
Wind SSW
1020.2 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.7 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Westerville?
Temperature & Precipitation
PM2.5 Trend
38h · 2 stationsPM2.56.7 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX17.4
Extreme
Station readings (1 station within 25 km)
6.7
Median
6.7
Average
6.7
Low
6.7
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -0.4
What is the 7-day forecast for Westerville?
09-05
20.7° 14.7°
0.13 mm
09-06
25.0° 17.9°
0.13 mm
09-07
25.1° 13.0°
0.69 mm
09-08
24.5° 14.9°
4.63 mm
09-09
27.6° 12.4°
3.62 mm
09-10
24.3° 13.3°
0.13 mm
09-11
30.2° 13.4°
0.13 mm
Both models agree
Avg diff: 5.1°C
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-09-05T17:54 UTC.