Lancaster County, Virginia, United States

Last updated: 10:23 PM CDT  ·  Refresh
24°C
Feels like 27°
Mostly Cloudy
▲ 30°  /  ▼ 21°
Wind
5 mph NNW
Humidity
91%
Dew Point
22°
Pressure
29.91 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
83%
Sunrise
6:25 AM
Sunset
7:52 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Lancaster County is currently mostly cloudy at 24°C. Precipitation is likely — peak probability 76% around 11 PM. Sunrise: 6:25AM · Sunset: 7:52PM.

Alerts

No active alerts for this location.
43 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
58%
12 AM
23°
60%
1 AM
22°
27%
2 AM
22°
9%
3 AM
21°
10%
4 AM
21°
7%
5 AM
21°
4%
6 AM
21°
4%
7 AM
21°
4%
8 AM
22°
5%
9 AM
23°
10%
10 AM
23°
10%
11 AM
24°
18%
12 PM
25°
19%
1 PM
27°
23%
2 PM
27°
23%
3 PM
28°
23%
4 PM
28°
35%
5 PM
27°
36%
6 PM
27°
36%
7 PM
26°
37%
8 PM
26°
44%
9 PM
25°
52%
10 PM
24°
52%
7-Day Forecast
Tonight
30° 21°
Mostly Cloudy with a 58% chance of rain.
Fri
28° 21°
Partly Cloudy with a 75% chance of rain.
Sat
27° 22°
Rain, 90% chance.
Sun
31° 21°
Partly Cloudy with a 57% chance of rain.
Mon
31° 20°
Clear with a 29% chance of rain.
Tue
29° 19°
Rain, 70% chance.
Wed
31° 20°
Rain, 82% chance.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Cloudy 58% 5 mph NNW 91%
12 AM 23° Partly Cloudy 60% 6 mph NNW 89%
1 AM 22° Mostly Clear 27% 7 mph NNW 87%
2 AM 22° Partly Cloudy 9% 8 mph NNW 87%
3 AM 21° Partly Cloudy 10% 7 mph NNW 88%
4 AM 21° Mostly Cloudy 7% 6 mph NNW 88%
5 AM 21° Overcast 4% 7 mph N 90%
6 AM 21° Mostly Cloudy 4% 6 mph N 89%
7 AM 21° Mostly Cloudy 4% 7 mph N 88%
8 AM 22° Overcast 5% 8 mph N 86%
9 AM 23° Mostly Cloudy 10% 8 mph N 83%
10 AM 23° Mostly Cloudy 10% 8 mph N 79%
11 AM 24° Mostly Cloudy 18% 7 mph N 75%
12 PM 25° Partly Cloudy 19% 7 mph N 70%
1 PM 27° Partly Cloudy 23% 7 mph N 65%
2 PM 27° Partly Cloudy 23% 6 mph N 62%
3 PM 28° Mostly Clear 23% 5 mph NNE 61%
4 PM 28° Mostly Clear 35% 6 mph NNE 61%
5 PM 27° Mostly Clear 36% 6 mph NE 62%
6 PM 27° Partly Cloudy 36% 6 mph NE 65%
7 PM 26° Partly Cloudy 37% 6 mph NE 68%
8 PM 26° Mostly Cloudy 44% 6 mph ENE 71%
9 PM 25° Mostly Cloudy 52% 6 mph ENE 73%
10 PM 24° Partly Cloudy 52% 6 mph E 75%
15-Day Forecast
Today
8/20
Mostly Cloudy
58%
21°
30°
Fri
8/21
Partly Cloudy
75%
21°
28°
Sat
8/22
Rain
90%
22°
27°
Sun
8/23
Partly Cloudy
57%
21°
31°
Mon
8/24
Clear
29%
20°
31°
Tue
8/25
Rain
70%
19°
29°
Wed
8/26
Rain
82%
20°
31°
Thu
8/27
Rain
90%
21°
31°
Fri
8/28
Rain
68%
21°
31°
Sat
8/29
Rain
68%
21°
32°
Sun
8/30
Drizzle
60%
21°
33°
Mon
8/31
Drizzle
60%
22°
32°
Tue
9/1
Drizzle
60%
21°
28°
Wed
9/2
Drizzle
60%
20°
28°
Thu
9/3
Drizzle
60%
20°
28°
43
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
42 AQI 7.6 µg/m³
O3
Ground-level ozone
Dominant
43 AQI 46 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 43 Good 43 42
Sat 32 Good 32 20
Sun 37 Good 37 14
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 Fri Aug 21, 01:00'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
SBCAPE421 J/kg
MLCAPE19 J/kg
MUCAPE421 J/kg
SBCIN-42 J/kg
MLCIN-95 J/kg
Lifted Index-1.1
Kinematics
0–6 km Shear28 kt
0–1 km Shear11 kt
Eff. Shear28 kt
0–1 km SRH-64
0–3 km SRH7
Eff. SRH7
Storm Motion288° @ 28 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index30.0
Thermo & Levels
PWAT1.73 in
0–3 km LR5.1 °C/km
700–500 LR5.0 °C/km
Total Totals41.4
LCL989 hPa
LFC813 hPa
EL282 hPa
Freezing Lvl15,571 ft