Today | Weather | Tuesday, April 28, 2026

Weather in Portsmouth, Virginia

07:54 PM
Now
Cloudy Night
61° F
Feels Like 57°
Precipitation 0 %
Wind 9 mph
Humidity 56 %
Today
Rainy Weather
Day 68°
Night 50°
Precipitation 55 %
Wind 6 mph
UV Index (0 - 11+) 4

Portsmouth Weather Forecast Updated

59 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 28, 2025)
Sunny Weather

Day

73°

Night

45°

Wind

7 mph

UV Index

9

Precipitation

0 %

Air Quality in Portsmouth

NOW
37 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.18 µg/m³
PM10 5.55 µg/m³
O3 0.040 ppm
NO2 2.4 ppb
SO2 0.2 ppb
CO 0.13 ppm
NH3 3.94 µg/m³
NO 0.04 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)
PM2.53.18 µg/m³
PM105.55 µg/m³
O379.07 µg/m³
NO24.43 µg/m³
SO20.53 µg/m³
CO145.62 µg/m³
NH33.94 µg/m³
NO0.04 µg/m³