Weather in Portsmouth, Virginia

02:40 PM

Now

72° F

Feels Like 72°

Precipitation 0 %

Wind 16 mph

UV Index (0 - 11+) 11

Humidity 51 %

Today

Day 73°

Night 61°

Precipitation 3 %

Wind 16 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

50 minutes ago

Last updated on October 01, 2025 1:50 PM

Air quality in Portsmouth

NOW

40 AQI

Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.68 µg/m³

PM10 5.49 µg/m³

O₃ 48.63 ppb

NO₂ 0.98 ppb

SO₂ 0.49 ppb

CO 136.34 ppb

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Portsmouth

Minor Expected Likely

Coastal Flood Advisory

Coastal Flood Advisory issued October 1 at 1:42PM EDT until October 2 at 8:00PM EDT by NWS Wakefield VA

Oct 1, 1:42 PM → Oct 2, 8:00 PM

WHAT: Up to one foot of inundation above ground level
expected in low-lying areas near shorelines and tidal
waterways.

WHERE: Norfolk/Portsmouth, Newport News and Hampton/Poquoson
Counties, and Suffolk and Chesapeake.

WHEN: Until 8 PM EDT Thursday.

IMPACTS: Shallow flooding is expected in the most vulnerable
locations near the waterfront and shoreline resulting in a low
threat of property damage. Expect up to one foot of water
above ground level in low lying, vulnerable areas. Some roads
and low lying property including parking lots, parks and lawns
near the waterfront will experience shallow flooding.
+ Read More

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.

Updated: Oct 1, 1:50 PM Source: NWS Alert