Today | Weather | Thursday, December 4, 2025
Active Weather Warnings

Weather in Dayton, Ohio

04:30 AM
Now
Snowy Weather
30° F
Feels Like 21°
Precipitation 45 %
Wind 7 mph
Humidity 91 %
Today
Snowy Weather
Day 28°
Night 12°
Precipitation 55 %
Wind 8 mph
UV Index (0 - 11+) 2

Dayton Weather Forecast Updated

30 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 4, 2024)
Snowy Weather

Day

46°

Night

18°

Wind

17 mph

Precipitation

100 %

Air Quality in Dayton

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

Pollutant Concentrations:

PM2.5 13.54 µg/m³
PM10 15.31 µg/m³
O3 0.024 ppm
NO2 7.1 ppb
SO2 2.4 ppb
CO 0.19 ppm
NH3 0.24 µg/m³
NO 0 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)
PM2.513.54 µg/m³
PM1015.31 µg/m³
O347.71 µg/m³
NO213.35 µg/m³
SO26.36 µg/m³
CO214.71 µg/m³
NH30.24 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Dayton

Moderate Expected Observed

Special Weather Statement

Special Weather Statement issued December 3 at 1:05PM EST by NWS Wilmington OH
Dec 3, 1:05 PM Dec 4, 4:00 AM
Light snow is expected to develop across the area after midnight,
shifting to the southeast through the predawn hours. This band of
light snow will affect the region by the Thursday morning
commute, eventually pushing south of the area by mid- morning.

Minor snow accumulations of less than an inch are expected, but
cold ground conditions will allow for quick accumulation on any
untreated surfaces. The main impacts are expected to be reduced
visibilities and some slick spots on untreated surfaces.

Motorists should exercise caution. Plan extra time for the
Thursday morning commute.
Updated: Dec 4, 3:59 AM Source: NWS Alert