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Dayton (Ohio) (US)

Air Quality Trend (last 7 days)

Good (0-50)
Moderate (51-100)
Unhealthy for Sensitive Groups (101-150)
Unhealthy (151-200)
Very Unhealthy (201-300)
Hazardous (300+)

Weather - 48h MET Norway

Partly cloudy
20°C
Partly cloudy
Humidity
52.4%
Wind
10 m/s
Pressure
999.1 hPa
Direction
179°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
0° / 20°
Precip.
9.5mm
Max wind
10.5 m/s

Hourly Forecast

15.03
Now
Weather
20°
10
16.03
00:00
Weather
19°
10
16.03
01:00
Weather
19°
10
16.03
02:00
Weather
18°
10
16.03
03:00
Weather
18°
10
16.03
04:00
Weather
18°
10
16.03
05:00
Weather
17°
2.3
11
16.03
06:00
Weather
15°
3.1
11
16.03
07:00
Weather
15°
3.5
10
16.03
08:00
Weather
15°
0.6
10
16.03
09:00
Weather
10°
9
16.03
10:00
Weather
8
16.03
11:00
Weather
8
16.03
12:00
Weather
9
16.03
13:00
Weather
9
16.03
14:00
Weather
10
16.03
15:00
Weather
10
16.03
16:00
Weather
10
16.03
17:00
Weather
9
16.03
18:00
Weather
9
16.03
19:00
Weather
9
16.03
20:00
Weather
10
16.03
21:00
Weather
10
16.03
22:00
Weather
9

Temperature

20°C
0°C
23:00
20°C
00:00
19°C
01:00
19°C
02:00
18°C
03:00
18°C
04:00
18°C
05:00
17°C
06:00
15°C
07:00
15°C
08:00
15°C
09:00
10°C
10:00
7°C
11:00
6°C
12:00
5°C
13:00
4°C
14:00
3°C
15:00
2°C
16:00
2°C
17:00
2°C
18:00
2°C
19:00
2°C
20:00
1°C
21:00
1°C
22:00
0°C
23:00 10:00 22:00

Precipitation

3.5mm
0mm
05:00
2.3mm
06:00
3.1mm
07:00
3.5mm
08:00
0.6mm
23:00 10:00 22:00

Wind

10.5m/s
0m/s
23:00
10 m/s
00:00
9.8 m/s
01:00
10.2 m/s
02:00
9.7 m/s
03:00
9.7 m/s
04:00
10.1 m/s
05:00
10.5 m/s
06:00
10.5 m/s
07:00
9.6 m/s
08:00
10.3 m/s
09:00
9 m/s
10:00
8.4 m/s
11:00
8.4 m/s
12:00
8.6 m/s
13:00
8.8 m/s
14:00
9.7 m/s
15:00
9.5 m/s
16:00
9.5 m/s
17:00
9.1 m/s
18:00
9.3 m/s
19:00
9.3 m/s
20:00
9.5 m/s
21:00
9.5 m/s
22:00
9.2 m/s
23:00 10:00 22:00

Radiation

0.033 uSv
77.9 km
4.1%

Measurement time: 2026-03-15 00:18

source: epa_radnet

We display the worst measurements from all stations in the area. This approach provides a more cautious assessment of air quality, accounting for local pollution sources.

AQI
74.4 km
109
36.3%

Measurement time: 2026-03-16 00:00

Calculated from PM2.5/PM10

O3
71.4 km
99.14 µg/m3
62%

Measurement time: 2026-03-16 00:32

source: OpenWeatherMap

PM2.5
74.4 km
39 µg/m3
46.4%

Measurement time: 2026-03-16 00:00

source: Aqicn

PM10
71.4 km
6.13 µg/m3
4.4%

Measurement time: 2026-03-16 00:32

source: OpenWeatherMap

NO2
74.4 km
2.8 µg/m3
1.4%

Measurement time: 2026-03-16 00:00

source: Aqicn

CO
71.4 km
0.12085 mg/m3
0.9%

Measurement time: 2026-03-16 00:32

source: OpenWeatherMap

SO2
71.4 km
1.05 µg/m3
0.3%

Measurement time: 2026-03-16 00:32

source: OpenWeatherMap

Info


Region: Ohio
Latitude: 39.75895
Longitude: -84.19161


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About Air Quality in Dayton

Air quality in Dayton is monitored in real-time by sensors and measurement stations. On this page you'll find current data on major air pollutants including particulate matter PM2.5 and PM10, nitrogen dioxide (NO2), ozone (O3), and radiation levels.

Common Pollutants in Dayton

  • PM2.5 - fine particulate matter up to 2.5 micrometers, particularly harmful to health
  • PM10 - particulate matter up to 10 micrometers from traffic and industry
  • NO2 - nitrogen dioxide mainly emitted by vehicles
  • O3 - tropospheric ozone formed in photochemical reactions

When is Air Quality Best in Dayton?

Generally, the best air quality occurs:

  • Early morning (5:00-7:00 AM) before rush hour traffic
  • After rainfall which cleanses the atmosphere
  • During strong winds that disperse pollutants
  • In summer months when heating systems are less used

Tips for Runners in Dayton

If you're planning outdoor activities in Dayton, always check the current AQI value. When AQI exceeds 100, consider moving your workout indoors or shortening the distance. People with respiratory issues, children, and seniors should be especially cautious during elevated pollution levels. Choose routes away from busy streets and industrial areas.