Today | Weather | Tuesday, October 27, 2026

Weather in Dayton, Ohio

01:39 PM
Now
Cloudy Weather
72° F
Feels Like 75°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 3
Humidity 46 %
Today
Cloudy Weather
Day 75°
Night 46°
Precipitation 1 %
Wind 5 mph
UV Index (0 - 11+) 3

Dayton Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 27, 2025)
Cloudy Night

Day

63°

Night

45°

Wind

8 mph

Precipitation

2 %

Air Quality in Dayton

NOW
73 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 22.64 µg/m³
PM10 26.05 µg/m³
O3 0.054 ppm
NO2 2.7 ppb
SO2 1.7 ppb
CO 0.17 ppm
NH3 0.48 µg/m³
NO 0.89 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.5 – 22.64 µg/m³
PM10 – 26.05 µg/m³
O3 – 105.78 µg/m³
NO2 – 5.11 µg/m³
SO2 – 4.58 µg/m³
CO – 192.03 µg/m³
NH3 – 0.48 µg/m³
NO – 0.89 µg/m³