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Today | Weather | Wednesday, October 22, 2025
Active Weather Warnings

Weather in Portsmouth, Virginia

07:16 AM
Now
Cloudy Night
55° F
Feels Like 52°
Precipitation 13 %
Wind 8 mph
Humidity 82 %
Today
Sunny Weather
Day 73°
Night 45°
Precipitation 1 %
Wind 14 mph
UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Portsmouth Weather Forecast Updated

33 minutes ago
Last updated on

Air Quality in Portsmouth

NOW
36 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.02 µg/m³
PM10 6.09 µg/m³
O3 0.039 ppm
NO2 1.1 ppb
SO2 0.4 ppb
CO 0.11 ppm
NH3 2.23 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)
PM2.5 – 5.02 µg/m³
PM10 – 6.09 µg/m³
O3 – 76.18 µg/m³
NO2 – 2.06 µg/m³
SO2 – 1.13 µg/m³
CO – 125.98 µg/m³
NH3 – 2.23 µg/m³
NO – 0 µg/m³
View Hourly Air Quality Forecast

Weather Alerts and Warnings for Portsmouth

Moderate Expected Observed

Special Weather Statement

Special Weather Statement issued October 22 at 2:49AM EDT by NWS Wakefield VA
Oct 22, 2:49 AM → Oct 22, 7:00 PM
The combination of westerly winds of 15 mph, with gusts to 20 to
25 mph, relative humidity levels between 25 and 30 percent, and
dry fuels will lead to increased fire danger across most of
central and southern Virginia today, from 11 am to 7 pm. Outdoor
burning is strongly discouraged.

Residents are urged to exercise caution handling any potential
ignition source...including machinery...cigarettes...and matches.
Be sure to properly discard all smoking materials. Any dry
grasses and tree litter that ignite will have the potential to
spread quickly.
Updated: Oct 22, 6:43 AM Source: NWS Alert