Today | Weather | Monday, April 27, 2026

Weather in Dayton, Ohio

04:37 PM
Now
Cloudy Weather
79° F
Feels Like 77°
Precipitation 18 %
Wind 16 mph
UV Index (0 - 11+) 1
Humidity 46 %
Today
Partly Sunny with Showers
Day 81°
Night 61°
Precipitation 55 %
Wind 12 mph
UV Index (0 - 11+) 8

Warning: High UV Index Today: 8

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Dayton Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 27, 2025)
Sunny Weather

Day

70°

Night

45°

Wind

7 mph

UV Index

9

Precipitation

0 %

Air Quality in Dayton

NOW
49 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.36 µg/m³
PM10 3.85 µg/m³
O3 0.053 ppm
NO2 0.6 ppb
SO2 0.2 ppb
CO 0.11 ppm
NH3 1.03 µg/m³
NO 0.12 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 considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.53.36 µg/m³
PM103.85 µg/m³
O3103.76 µg/m³
NO21.08 µg/m³
SO20.6 µg/m³
CO129.8 µg/m³
NH31.03 µg/m³
NO0.12 µg/m³