Today | Weather | Thursday, March 12, 2026

Weather in Hamilton, Ohio

08:58 AM
Now
Cloudy Weather
34° F
Feels Like 23°
Precipitation 0 %
Wind 15 mph
UV Index (0 - 11+) 2
Humidity 74 %
Today
Cloudy Weather
Day 52°
Night 37°
Precipitation 0 %
Wind 14 mph
UV Index (0 - 11+) 5

Hamilton Weather Forecast Updated

45 minutes ago
Last updated on

Air Quality in Hamilton

NOW
40 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.49 µg/m³
PM10 2.27 µg/m³
O3 0.043 ppm
NO2 2.6 ppb
SO2 0.9 ppb
CO 0.14 ppm
NH3 0.42 µg/m³
NO 0.11 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)
PM2.51.49 µg/m³
PM102.27 µg/m³
O384.32 µg/m³
NO24.94 µg/m³
SO22.34 µg/m³
CO159.54 µg/m³
NH30.42 µg/m³
NO0.11 µg/m³