Today | Weather | Monday, October 12, 2026

Weather in Rochester, New Hampshire

09:15 PM
Now
Cloudy Weather
59° F
Feels Like 57°
Precipitation 5 %
Wind 6 mph
Humidity 87 %
Today
Cloudy Weather
Day 70°
Night 45°
Precipitation 3 %
Wind 6 mph
UV Index (0 - 11+) 4

Rochester Weather Forecast Updated

Air Quality in Rochester

NOW
30 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.73 µg/m³
PM10 3.62 µg/m³
O3 0.032 ppm
NO2 4.2 ppb
SO2 0.2 ppb
CO 0.14 ppm
NH3 0.32 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)
PM2.5 – 2.73 µg/m³
PM10 – 3.62 µg/m³
O3 – 63.49 µg/m³
NO2 – 7.83 µg/m³
SO2 – 0.53 µg/m³
CO – 159.91 µg/m³
NH3 – 0.32 µg/m³
NO – 0 µg/m³