Today | Weather | Monday, October 12, 2026

Weather in Hamilton, Ohio

09:06 PM
Now
Night
68° F
Feels Like 68°
Precipitation 0 %
Wind 5 mph
Humidity 87 %
Today
Night
Day 81°
Night 61°
Precipitation 0 %
Wind 5 mph

Hamilton Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 12, 2025)
Cloudy Weather

Day

73°

Night

50°

Wind

4 mph

UV Index

40

Precipitation

0 %

Air Quality in Hamilton

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

Pollutant Concentrations:

PM2.5 14.87 µg/m³
PM10 16.11 µg/m³
O3 0.047 ppm
NO2 2 ppb
SO2 0.6 ppb
CO 0.13 ppm
NH3 0.76 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)
PM2.5 – 14.87 µg/m³
PM10 – 16.11 µg/m³
O3 – 92.92 µg/m³
NO2 – 3.74 µg/m³
SO2 – 1.57 µg/m³
CO – 145.87 µg/m³
NH3 – 0.76 µg/m³
NO – 0 µg/m³