Today | Weather | Thursday, September 11, 2025
Active Weather Warnings

Weather in Portsmouth, Virginia

07:50 AM
Now
Rainy Weather
68° F
Feels Like 66°
Precipitation 51 %
Wind 7 mph
UV Index (0 - 11+) 2
Humidity 89 %
Today
Partly Sunny with Showers
Day 77°
Night 63°
Precipitation 55 %
Wind 13
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

18 minutes ago
Last updated on

Air quality in Portsmouth

NOW
23 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 8.74 µg/m³
PM10 9.34 µg/m³
O₃ 25.50 ppb
NO₂ 4.81 ppb
SO₂ 1.22 ppb
CO 168.95 ppb
PM2.5 – 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

Weather Alerts and Warnings for Portsmouth

Minor Expected Likely

Coastal Flood Advisory

Coastal Flood Advisory issued September 11 at 6:49AM EDT until September 12 at 4:00PM EDT by NWS Wakefield VA
Sep 11, 6:49 AM Sep 12, 4:00 PM
WHAT: Up to one foot of inundation above ground level in low-
lying areas near shorelines and tidal waterways.

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

WHEN: Until 4 PM EDT Friday.

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.
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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: Sep 11, 7:31 AM Source: NWS Alert