Today | Weather | Wednesday, April 29, 2026

Weather in Rochester, New Hampshire

02:41 AM
Now
Cloudy Weather
41° F
Feels Like 37°
Precipitation 0 %
Wind 6 mph
Humidity 77 %
Today
Rainy Weather
Day 55°
Night 43°
Precipitation 55 %
Wind 9 mph
UV Index (0 - 11+) 2

Rochester Weather Forecast Updated

Last updated on

Air Quality in Rochester

NOW
36 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.34 µg/m³
PM10 4.85 µg/m³
O3 0.039 ppm
NO2 4 ppb
SO2 0.4 ppb
CO 0.15 ppm
NH3 0.11 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)
PM2.52.34 µg/m³
PM104.85 µg/m³
O375.83 µg/m³
NO27.58 µg/m³
SO21.1 µg/m³
CO170.22 µg/m³
NH30.11 µg/m³
NO0 µg/m³