Today | Weather | Thursday, December 4, 2025

Active Weather Warnings

Special Weather Statement

Weather in Hamilton, Ohio

05:07 AM

Now

30° F

Feels Like 23°

Precipitation 48 %

Wind 7 mph

Humidity 95 %

Today

Day 32°

Night 12°

Precipitation 64 %

Wind 8 mph

UV Index (0 - 11+) 1

Hamilton Weather Forecast Updated

29 minutes ago

Last updated on December 04, 2025 at 4:38 AM

Air Quality in Hamilton

NOW

57 AQI

Moderate air quality Dominant pollutant: PM_2.5

Pollutant Concentrations:

PM_2.5 15.44 µg/m³

PM₁₀ 17.11 µg/m³

O₃ 0.020 ppm

NO₂ 8.5 ppb

SO₂ 1.8 ppb

CO 0.21 ppm

NH₃ 0.73 µg/m³

NO 0 µg/m³

PM_2.5 – 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)

PM_2.5 – 15.44 µg/m³

PM₁₀ – 17.11 µg/m³

O₃ – 39.58 µg/m³

NO₂ – 16.04 µg/m³

SO₂ – 4.82 µg/m³

CO – 237.56 µg/m³

NH₃ – 0.73 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Hamilton

Moderate Expected Observed

Special Weather Statement

Special Weather Statement issued December 4 at 3:54AM EST by NWS Wilmington OH

Dec 4, 3:54 AM → Dec 4, 9:00 AM

Light snow will continue to move through the region early this
morning with the passage of a cold front. Minor snow accumulations
are expected. Additionally, some very patchy freezing fog may
develop. 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, 4:38 AM Source: NWS Alert