King William County, Virginia, United States

Last updated: 9:11 PM CDT  ·  Refresh
25°C
Feels like 28°
Overcast
▲ 34°  /  ▼ 18°
Wind
6 mph WNW
Humidity
87%
Dew Point
22°
Pressure
29.84 inHg
Visibility
3 mi
UV Index
0.0
Cloud Cover
88%
Sunrise
6:28 AM
Sunset
7:54 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: King William County is currently overcast at 25°C. Precipitation is likely — peak probability 64% around 9 PM. Sunrise: 6:28AM · Sunset: 7:54PM.

Alerts

No active alerts for this location.
45 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
58%
11 PM
24°
60%
12 AM
23°
45%
1 AM
22°
45%
2 AM
22°
7%
3 AM
21°
8%
4 AM
20°
4%
5 AM
18°
4%
6 AM
18°
4%
7 AM
18°
5%
8 AM
19°
5%
9 AM
21°
8%
10 AM
22°
8%
11 AM
23°
11%
12 PM
24°
11%
1 PM
26°
20%
2 PM
27°
35%
3 PM
27°
38%
4 PM
27°
52%
5 PM
27°
53%
6 PM
27°
53%
7 PM
26°
57%
8 PM
26°
57%
9 PM
23°
63%
7-Day Forecast
Tonight
34° 18°
Overcast with a 58% chance of rain.
Fri
29° 18°
Partly Cloudy with a 59% chance of rain.
Sat
29° 20°
Rain, 81% chance.
Sun
33° 20°
Partly Cloudy with a 28% chance of rain.
Mon
32° 18°
Clear.
Tue
31° 18°
Heavy Rain, 82% chance.
Wed
32° 19°
Rain, 82% chance.
TimeTempConditionsPrecipWindHumidity
Now 25° Overcast 58% 6 mph WNW 87%
11 PM 24° Thunderstorm 60% 4 mph NW 90%
12 AM 23° Heavy Rain 45% 4 mph N 89%
1 AM 22° Partly Cloudy 45% 6 mph N 90%
2 AM 22° Mostly Clear 7% 7 mph N 90%
3 AM 21° Partly Cloudy 8% 7 mph N 90%
4 AM 20° Mostly Cloudy 4% 6 mph N 91%
5 AM 18° Mostly Cloudy 4% 6 mph N 92%
6 AM 18° Partly Cloudy 4% 6 mph N 91%
7 AM 18° Partly Cloudy 5% 6 mph N 89%
8 AM 19° Mostly Cloudy 5% 6 mph N 87%
9 AM 21° Partly Cloudy 8% 6 mph N 83%
10 AM 22° Partly Cloudy 8% 7 mph NNE 78%
11 AM 23° Partly Cloudy 11% 7 mph NNE 74%
12 PM 24° Partly Cloudy 11% 6 mph NNE 73%
1 PM 26° Partly Cloudy 20% 5 mph NNE 71%
2 PM 27° Partly Cloudy 35% 5 mph NNE 70%
3 PM 27° Partly Cloudy 38% 5 mph NNE 68%
4 PM 27° Partly Cloudy 52% 5 mph NNE 67%
5 PM 27° Partly Cloudy 53% 5 mph NE 66%
6 PM 27° Partly Cloudy 53% 5 mph NE 70%
7 PM 26° Mostly Cloudy 57% 5 mph NE 73%
8 PM 26° Mostly Cloudy 57% 5 mph ENE 76%
9 PM 23° Overcast 63% 4 mph E 78%
15-Day Forecast
Today
8/20
Overcast
58%
18°
34°
Fri
8/21
Partly Cloudy
59%
18°
29°
Sat
8/22
Rain
81%
20°
29°
Sun
8/23
Partly Cloudy
28%
20°
33°
Mon
8/24
Clear
8%
18°
32°
Tue
8/25
Heavy Rain
82%
18°
31°
Wed
8/26
Rain
82%
19°
32°
Thu
8/27
Rain
82%
20°
32°
Fri
8/28
Rain
68%
19°
34°
Sat
8/29
Rain
68%
20°
35°
Sun
8/30
Drizzle
60%
20°
34°
Mon
8/31
Drizzle
60%
21°
34°
Tue
9/1
Drizzle
60%
19°
32°
Wed
9/2
Drizzle
60%
18°
32°
Thu
9/3
Drizzle
60%
18°
31°
45
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
43 AQI 7.7 µg/m³
O3
Ground-level ozone
Dominant
45 AQI 49 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 45 Good 45 43
Sat 27 Good 27 17
Sun 36 Good 36 17
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 Thu Aug 20, 23:00'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
SBCAPE509 J/kg
MLCAPE669 J/kg
MUCAPE1052 J/kg
SBCIN-59 J/kg
MLCIN-35 J/kg
Lifted Index-1.6
Kinematics
0–6 km Shear27 kt
0–1 km Shear11 kt
Eff. Shear28 kt
0–1 km SRH-11
0–3 km SRH80
Eff. SRH80
Storm Motion291° @ 25 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.2
Supercell1.2
K-Index36.8
Thermo & Levels
PWAT2.13 in
0–3 km LR5.7 °C/km
700–500 LR4.8 °C/km
Total Totals45.2
LCL971 hPa
LFC805 hPa
EL261 hPa
Freezing Lvl15,801 ft