James City County, Virginia, United States

Last updated: 9:11 PM CDT  ·  Refresh
25°C
Feels like 28°
Mostly Cloudy
▲ 33°  /  ▼ 20°
Wind
4 mph W
Humidity
87%
Dew Point
22°
Pressure
29.86 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
65%
Sunrise
6:27 AM
Sunset
7:52 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: James City County is currently mostly cloudy at 25°C. Precipitation is likely — peak probability 85% around 9 PM. Atmospheric instability is elevated (CAPE up to 600 J/kg) — isolated convective development possible. Sunrise: 6:27AM · Sunset: 7:52PM.

Alerts

No active alerts for this location.
41 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
45%
11 PM
24°
67%
12 AM
24°
56%
1 AM
23°
69%
2 AM
23°
42%
3 AM
22°
24%
4 AM
21°
25%
5 AM
20°
16%
6 AM
20°
16%
7 AM
20°
16%
8 AM
20°
16%
9 AM
21°
30%
10 AM
22°
31%
11 AM
23°
39%
12 PM
24°
44%
1 PM
24°
44%
2 PM
25°
44%
3 PM
25°
56%
4 PM
26°
66%
5 PM
26°
66%
6 PM
26°
70%
7 PM
26°
70%
8 PM
25°
76%
9 PM
23°
84%
7-Day Forecast
Tonight
33° 20°
Mostly Cloudy with a 45% chance of rain.
Fri
28° 20°
Mostly Cloudy with a 74% chance of rain.
Sat
28° 21°
Rain, 90% chance.
Sun
32° 21°
Partly Cloudy with a 57% chance of rain.
Mon
31° 19°
Clear.
Tue
29° 19°
Rain, 82% chance.
Wed
31° 19°
Rain, 82% chance.
TimeTempConditionsPrecipWindHumidity
Now 25° Mostly Cloudy 45% 4 mph W 87%
11 PM 24° Rain 67% 5 mph NW 90%
12 AM 24° Overcast 56% 4 mph NW 92%
1 AM 23° Rain 69% 4 mph NNW 93%
2 AM 23° Partly Cloudy 42% 4 mph NNW 93%
3 AM 22° Mostly Cloudy 24% 5 mph N 94%
4 AM 21° Overcast 25% 6 mph N 94%
5 AM 20° Mostly Cloudy 16% 5 mph N 94%
6 AM 20° Mostly Cloudy 16% 5 mph N 93%
7 AM 20° Mostly Cloudy 16% 6 mph N 93%
8 AM 20° Mostly Cloudy 16% 7 mph N 91%
9 AM 21° Mostly Cloudy 30% 7 mph N 87%
10 AM 22° Mostly Cloudy 31% 6 mph N 83%
11 AM 23° Partly Cloudy 39% 6 mph N 79%
12 PM 24° Partly Cloudy 44% 5 mph NNE 78%
1 PM 24° Partly Cloudy 44% 5 mph NNE 77%
2 PM 25° Partly Cloudy 44% 5 mph NNE 75%
3 PM 25° Partly Cloudy 56% 5 mph NE 74%
4 PM 26° Partly Cloudy 66% 5 mph NE 74%
5 PM 26° Partly Cloudy 66% 5 mph NE 74%
6 PM 26° Partly Cloudy 70% 5 mph ENE 75%
7 PM 26° Mostly Cloudy 70% 5 mph ENE 77%
8 PM 25° Mostly Cloudy 76% 5 mph E 79%
9 PM 23° Mostly Cloudy 84% 4 mph E 81%
15-Day Forecast
Today
8/20
Mostly Cloudy
45%
20°
33°
Fri
8/21
Mostly Cloudy
74%
20°
28°
Sat
8/22
Rain
90%
21°
28°
Sun
8/23
Partly Cloudy
57%
21°
32°
Mon
8/24
Clear
16%
19°
31°
Tue
8/25
Rain
82%
19°
29°
Wed
8/26
Rain
82%
19°
31°
Thu
8/27
Rain
82%
21°
31°
Fri
8/28
Drizzle
44%
21°
32°
Sat
8/29
Rain
68%
21°
33°
Sun
8/30
Drizzle
60%
21°
33°
Mon
8/31
Drizzle
60%
21°
33°
Tue
9/1
Drizzle
60%
19°
31°
Wed
9/2
Drizzle
60%
19°
30°
Thu
9/3
Drizzle
60%
19°
29°
41
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
41 AQI 7.3 µg/m³
O3
Ground-level ozone
38 AQI 41 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 41 Good 38 41
Sat 31 Good 31 22
Sun 32 Good 32 19
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
SBCAPE499 J/kg
MLCAPE628 J/kg
MUCAPE796 J/kg
SBCIN-140 J/kg
MLCIN-95 J/kg
Lifted Index-1.6
Kinematics
0–6 km Shear27 kt
0–1 km Shear17 kt
Eff. Shear27 kt
0–1 km SRH68
0–3 km SRH85
Eff. SRH85
Storm Motion284° @ 27 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.1
STP (eff)0.1
Supercell0.9
K-Index35.3
Thermo & Levels
PWAT2.03 in
0–3 km LR5.4 °C/km
700–500 LR5.0 °C/km
Total Totals44.5
LCL975 hPa
LFC791 hPa
EL258 hPa
Freezing Lvl15,738 ft