Coastal Flood Advisory — Chesapeake, VA, Hampton/Poquoson, VA, Suffolk, VA, Norfolk, VA, Portsmouth, VA 1:00 PM

Portsmouth, Virginia

Last updated: 8:33 PM CDT  ·  Refresh
22°C
Feels like 22°
Overcast
▲ 27°  /  ▼ 20°
Wind
14 mph NE
Humidity
89%
Dew Point
21°
Pressure
30.09 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
95%
Sunrise
6:53 AM
Sunset
7:01 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Portsmouth is currently overcast at 22°C. Precipitation is likely — peak probability 88% around 10 PM. Sunrise: 6:53AM · Sunset: 7:01PM.

Alerts

Coastal Flood Advisory
Chesapeake, VA, Hampton/Poquoson, VA, Suffolk, VA, Norfolk, VA, Portsmouth, VA
Expires 1:00 PM
24 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
22°
87%
10 PM
22°
87%
11 PM
22°
87%
12 AM
22°
53%
1 AM
22°
47%
2 AM
22°
49%
3 AM
22°
60%
4 AM
22°
48%
5 AM
21°
74%
6 AM
21°
74%
7 AM
20°
74%
8 AM
20°
74%
9 AM
21°
73%
10 AM
21°
73%
11 AM
21°
82%
12 PM
21°
79%
1 PM
22°
79%
2 PM
22°
78%
3 PM
22°
78%
4 PM
23°
74%
5 PM
22°
74%
6 PM
22°
77%
7 PM
21°
77%
8 PM
21°
77%
7-Day Forecast
Tonight
27° 20°
Overcast with a 87% chance of rain.
Wed
24° 20°
Overcast with a 79% chance of rain.
Thu
23° 17°
Overcast with a 82% chance of rain.
Fri
22° 14°
Overcast.
Sat
25° 15°
Clear with a 25% chance of rain.
Sun
26° 15°
Drizzle, 43% chance.
Mon
26° 17°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 22° Overcast 87% 14 mph NE 89%
10 PM 22° Overcast 87% 15 mph NE 89%
11 PM 22° Overcast 87% 14 mph NE 88%
12 AM 22° Overcast 53% 14 mph NE 86%
1 AM 22° Overcast 47% 14 mph NE 86%
2 AM 22° Overcast 49% 13 mph NE 85%
3 AM 22° Overcast 60% 14 mph NE 86%
4 AM 22° Overcast 48% 14 mph NE 87%
5 AM 21° Overcast 74% 15 mph NE 87%
6 AM 21° Overcast 74% 15 mph NE 88%
7 AM 20° Rain 74% 16 mph NE 89%
8 AM 20° Rain 74% 16 mph NNE 89%
9 AM 21° Rain 73% 15 mph NNE 90%
10 AM 21° Rain 73% 15 mph NNE 91%
11 AM 21° Rain 82% 16 mph NNE 89%
12 PM 21° Overcast 79% 16 mph NNE 86%
1 PM 22° Overcast 79% 16 mph NNE 84%
2 PM 22° Rain 78% 17 mph NE 86%
3 PM 22° Rain 78% 18 mph NE 86%
4 PM 23° Rain 74% 18 mph NE 86%
5 PM 22° Rain 74% 19 mph NE 86%
6 PM 22° Rain 77% 19 mph NE 87%
7 PM 21° Rain 77% 19 mph NE 87%
8 PM 21° Overcast 77% 19 mph NE 86%
15-Day Forecast
Today
9/22
Overcast
87%
20°
27°
Wed
9/23
Overcast
79%
20°
24°
Thu
9/24
Overcast
82%
17°
23°
Fri
9/25
Overcast
13%
14°
22°
Sat
9/26
Clear
25%
15°
25°
Sun
9/27
Drizzle
43%
15°
26°
Mon
9/28
Clear
3%
17°
26°
Tue
9/29
Clear
3%
17°
27°
Wed
9/30
Drizzle
43%
18°
28°
Thu
10/1
Rain
68%
19°
27°
Fri
10/2
Clear
60%
19°
28°
Sat
10/3
Drizzle
60%
19°
27°
Sun
10/4
Drizzle
60%
18°
26°
Mon
10/5
Drizzle
60%
17°
25°
Tue
10/6
Drizzle
60%
16°
23°
24
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
24 AQI 4.3 µg/m³
O3
Ground-level ozone
22 AQI 24 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 24 Good 22 24
Thu 17 Good 12 17
Fri 22 Good 22 15
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 Sep 22, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE179 J/kg
MLCAPE160 J/kg
MUCAPE245 J/kg
SBCIN-0 J/kg
MLCIN-0 J/kg
Lifted Index-0.4
Kinematics
0–6 km Shear18 kt
0–1 km Shear13 kt
Eff. Shear9 kt
0–1 km SRH-4
0–3 km SRH74
Eff. SRH74
Storm Motion350° @ 13 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index34.8
Thermo & Levels
PWAT2.16 in
0–3 km LR5.3 °C/km
700–500 LR5.1 °C/km
Total Totals43.4
LCL992 hPa
LFC953 hPa
EL403 hPa
Freezing Lvl14,288 ft