Today | Weather | Monday, July 20, 2026

Weather in Dover, New Hampshire

05:24 PM
Now
Cloudy Weather
81° F
Feels Like 84°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 3
Humidity 36 %
Today
Cloudy Weather
Day 82°
Night 59°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 9

Warning: High UV Index Today: 9

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Dover Weather Forecast Updated

Last updated on

Air Quality in Dover

NOW
48 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.94 µg/m³
PM10 3.27 µg/m³
O3 0.052 ppm
NO2 1 ppb
SO2 0.2 ppb
CO 0.09 ppm
NH3 0.27 µg/m³
NO 0.28 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)
PM2.52.94 µg/m³
PM103.27 µg/m³
O3101.26 µg/m³
NO21.83 µg/m³
SO20.61 µg/m³
CO99.5 µg/m³
NH30.27 µg/m³
NO0.28 µg/m³