Today | Weather | Monday, December 15, 2025

Weather in Portsmouth, Virginia

04:22 PM
Now
Cloudy Weather
34° F
Feels Like 34°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 1
Humidity 42 %
Today
Cloudy Weather
Day 36°
Night 21°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 2

Portsmouth Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 15, 2024)
Rainy Weather

Day

55°

Night

48°

Wind

6 mph

Precipitation

84 %

Air Quality in Portsmouth

NOW
32 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.93 µg/m³
PM10 2.53 µg/m³
O3 0.034 ppm
NO2 2.3 ppb
SO2 0.5 ppb
CO 0.13 ppm
NH3 0.61 µg/m³
NO 0.58 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)
PM2.51.93 µg/m³
PM102.53 µg/m³
O367.55 µg/m³
NO24.26 µg/m³
SO21.26 µg/m³
CO146.23 µg/m³
NH30.61 µg/m³
NO0.58 µg/m³