Today | Weather | Tuesday, January 13, 2026

Weather in Portsmouth, Virginia

05:06 PM
Now
Sunny Weather
54° F
Feels Like 48°
Precipitation 0 %
Wind 10 mph
UV Index (0 - 11+) 0
Humidity 32 %
Today
Sunny Weather
Day 55°
Night 39°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 3

Portsmouth Weather Forecast Updated

48 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (January 13, 2025)
Cloudy Weather

Day

50°

Night

27°

Wind

7 mph

UV Index

3

Precipitation

1 %

Air Quality in Portsmouth

NOW
42 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.43 µg/m³
PM10 5.51 µg/m³
O3 0.045 ppm
NO2 1.3 ppb
SO2 0.4 ppb
CO 0.14 ppm
NH3 1.31 µg/m³
NO 0.09 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)
PM2.54.43 µg/m³
PM105.51 µg/m³
O389.19 µg/m³
NO22.41 µg/m³
SO21.15 µg/m³
CO160.89 µg/m³
NH31.31 µg/m³
NO0.09 µg/m³