Severe Thunderstorm Watch 7:00 PM Severe Thunderstorm Watch 7:00 PM Flash Flood Warning — City of Chesapeake County, VA, City of Norfolk County, VA, City of Portsmouth County, VA, City of Suffolk County, VA, City of Virginia Beach County, VA 5:30 PM Areal Flood Watch 9:00 PM

Portsmouth, Virginia

Last updated: 5:02 PM CDT  ·  Refresh
24°C
Feels like 25°
Rain
▲ 31°  /  ▼ 18°
Wind
12 mph NNW
Humidity
87%
Dew Point
22°
Pressure
29.84 inHg
Visibility
1 mi
UV Index
1.9
Cloud Cover
96%
Sunrise
5:46 AM
Sunset
8:28 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Portsmouth is currently rain at 24°C. Precipitation is likely — peak probability 90% around 6 PM. Atmospheric instability is elevated (CAPE up to 573 J/kg) — isolated convective development possible. Sunrise: 5:46AM · Sunset: 8:28PM.

Alerts

Severe Thunderstorm Watch
Expires 7:00 PM
Severe Thunderstorm Watch
Expires 7:00 PM
Flash Flood Warning
City of Chesapeake County, VA, City of Norfolk County, VA, City of Portsmouth County, VA, City of Suffolk County, VA, City of Virginia Beach County, VA
Expires 5:30 PM
Areal Flood Watch
Expires 9:00 PM
35 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
90%
7 PM
24°
82%
8 PM
24°
76%
9 PM
23°
49%
10 PM
22°
35%
11 PM
21°
23%
12 AM
21°
23%
1 AM
21°
16%
2 AM
21°
3%
3 AM
21°
3%
4 AM
21°
3%
5 AM
20°
3%
6 AM
18°
3%
7 AM
19°
3%
8 AM
19°
3%
9 AM
21°
3%
10 AM
23°
3%
11 AM
24°
3%
12 PM
25°
3%
1 PM
26°
3%
2 PM
27°
3%
3 PM
27°
3%
4 PM
27°
3%
5 PM
28°
3%
7-Day Forecast
Tonight
31° 18°
Rain, 90% chance.
Wed
29° 18°
Mostly Clear with a 23% chance of rain.
Thu
30° 20°
Mostly Cloudy.
Fri
31° 22°
Rain, 70% chance.
Sat
31° 22°
Drizzle, 72% chance.
Sun
28° 21°
Clear with a 62% chance of rain.
Mon
27° 21°
Clear with a 24% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 24° Rain 90% 12 mph NNW 87%
7 PM 24° Overcast 82% 13 mph N 89%
8 PM 24° Heavy Rain 76% 12 mph NNW 87%
9 PM 23° Rain 49% 12 mph NNW 84%
10 PM 22° Rain 35% 12 mph NNW 82%
11 PM 21° Rain 23% 11 mph NNW 80%
12 AM 21° Rain 23% 10 mph NNW 80%
1 AM 21° Drizzle 16% 9 mph NNW 80%
2 AM 21° Clear 3% 7 mph NNW 81%
3 AM 21° Clear 3% 7 mph NW 82%
4 AM 21° Clear 3% 7 mph NW 83%
5 AM 20° Clear 3% 7 mph NW 84%
6 AM 18° Clear 3% 7 mph NW 82%
7 AM 19° Clear 3% 7 mph NW 79%
8 AM 19° Clear 3% 7 mph NW 76%
9 AM 21° Mostly Clear 3% 7 mph NNW 70%
10 AM 23° Mostly Clear 3% 7 mph NNW 63%
11 AM 24° Partly Cloudy 3% 7 mph NNW 56%
12 PM 25° Mostly Clear 3% 7 mph NNW 53%
1 PM 26° Mostly Clear 3% 6 mph NNW 50%
2 PM 27° Mostly Clear 3% 6 mph NNW 48%
3 PM 27° Mostly Clear 3% 6 mph NNW 48%
4 PM 27° Partly Cloudy 3% 5 mph NNW 48%
5 PM 28° Mostly Cloudy 3% 4 mph N 48%
15-Day Forecast
Today
6/23
Rain
90%
18°
31°
Wed
6/24
Mostly Clear
23%
18°
29°
Thu
6/25
Mostly Cloudy
3%
20°
30°
Fri
6/26
Rain
70%
22°
31°
Sat
6/27
Drizzle
72%
22°
31°
Sun
6/28
Clear
62%
21°
28°
Mon
6/29
Clear
24%
21°
27°
Tue
6/30
Clear
24%
20°
27°
Wed
7/1
Drizzle
66%
21°
27°
Thu
7/2
Drizzle
63%
21°
29°
Fri
7/3
Drizzle
76%
22°
27°
Sat
7/4
Rain
90%
22°
28°
Sun
7/5
Drizzle
66%
22°
27°
Mon
7/6
Drizzle
66%
22°
27°
Tue
7/7
Drizzle
66%
22°
28°
35
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
34 AQI 6.3 µg/m³
O3
Ground-level ozone
Dominant
35 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 35 Good 35 34
Thu 47 Good 36 47
Fri 51 Moderate 38 51
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Tue Jun 23, 20:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE538 J/kg
MLCAPE452 J/kg
MUCAPE644 J/kg
SBCIN-37 J/kg
MLCIN0 J/kg
Lifted Index-2.7
Kinematics
0–6 km Shear39 kt
0–1 km Shear11 kt
Eff. Shear37 kt
0–1 km SRH-91
0–3 km SRH-176
Eff. SRH-176
Storm Motion194° @ 19 kt
0–1 km EHI-0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.2
Thermo & Levels
PWAT2.08 in
0–3 km LR5.2 °C/km
700–500 LR5.6 °C/km
Total Totals44.5
LCL983 hPa
LFC786 hPa
EL275 hPa
Freezing Lvl14,446 ft