Today | Weather | Wednesday, February 25, 2026

Weather in Hamilton, Ohio

11:19 PM
Now
Cloudy Weather
34° F
Feels Like 34°
Precipitation 5 %
Wind 4 mph
Humidity 82 %
Today
Cloudy Weather
Day 55°
Night 30°
Precipitation 5 %
Wind 11 mph
UV Index (0 - 11+) 4

Hamilton Weather Forecast Updated

Air Quality in Hamilton

NOW
35 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 8.45 µg/m³
PM10 9.99 µg/m³
O3 0.032 ppm
NO2 6.1 ppb
SO2 0.8 ppb
CO 0.19 ppm
NH3 0.43 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 considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.58.45 µg/m³
PM109.99 µg/m³
O363.31 µg/m³
NO211.44 µg/m³
SO22.22 µg/m³
CO220.75 µg/m³
NH30.43 µg/m³
NO0 µg/m³