Lancaster County, Virginia, United States

Last updated: 10:31 PM CDT · Refresh

24°C

Feels like 27°

Overcast

▲ 28° / ▼ 22°

Wind

8 mph WSW

Humidity

85%

Dew Point

23°

Pressure

29.73 inHg

Visibility

10 mi

UV Index

0.0

Cloud Cover

95%

Sunrise

6:00 AM

Sunset

8:23 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Lancaster County is currently overcast at 25°C. Precipitation is likely — peak probability 90% around 11 PM. Atmospheric instability is elevated (CAPE up to 1477 J/kg) — isolated convective development possible. Sunrise: 6:00AM · Sunset: 8:23PM.

33 AQI · Good Dominant: O3 Air Quality

Hourly Forecast · Next 24 Hours

Now

24°

90%

12 AM

23°

90%

1 AM

23°

90%

2 AM

23°

90%

3 AM

23°

84%

4 AM

23°

84%

5 AM

23°

63%

6 AM

23°

63%

7 AM

24°

42%

8 AM

24°

56%

9 AM

26°

57%

10 AM

27°

61%

11 AM

27°

70%

12 PM

28°

66%

1 PM

29°

62%

2 PM

30°

63%

3 PM

29°

62%

4 PM

29°

57%

5 PM

28°

61%

6 PM

27°

67%

7 PM

27°

64%

8 PM

26°

76%

9 PM

26°

77%

10 PM

26°

81%

7-Day Forecast

Tonight

28° 22°

Overcast with a 90% chance of rain.

Wed

31° 22°

Rain, 90% chance.

Thu

27° 19°

Mostly Cloudy with a 50% chance of rain.

Fri

27° 19°

Mostly Clear with a 44% chance of rain.

Sat

27° 19°

Overcast with a 51% chance of rain.

Sun

30° 18°

Rain, 70% chance.

Mon

33° 21°

Rain, 71% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 24° Overcast 90% 8 mph WSW 85%

12 AM 23° Overcast 90% 6 mph W 90%

1 AM 23° Overcast 90% 4 mph WSW 96%

2 AM 23° Heavy Rain 90% 4 mph SW 98%

3 AM 23° Heavy Rain 84% 7 mph SW 96%

4 AM 23° Heavy Rain 84% 10 mph SSW 95%

5 AM 23° Heavy Rain 63% 12 mph SW 93%

6 AM 23° Mostly Cloudy 63% 12 mph SW 91%

7 AM 24° Mostly Cloudy 42% 12 mph SW 90%

8 AM 24° Rain 56% 12 mph SW 86%

9 AM 26° Mostly Cloudy 57% 12 mph SW 82%

10 AM 27° Mostly Cloudy 61% 12 mph SW 78%

11 AM 27° Rain 70% 12 mph SW 74%

12 PM 28° Heavy Rain 66% 12 mph SW 70%

1 PM 29° Heavy Rain 62% 12 mph SW 66%

2 PM 30° Heavy Rain 63% 12 mph SW 65%

3 PM 29° Partly Cloudy 62% 12 mph SW 67%

4 PM 29° Partly Cloudy 57% 12 mph SW 68%

5 PM 28° Partly Cloudy 61% 11 mph SW 72%

6 PM 27° Partly Cloudy 67% 9 mph SW 76%

7 PM 27° Partly Cloudy 64% 8 mph SW 80%

8 PM 26° Partly Cloudy 76% 7 mph SW 82%

9 PM 26° Mostly Cloudy 77% 6 mph SW 84%

10 PM 26° Heavy Rain 81% 5 mph SW 87%

15-Day Forecast

Today

7/21

Overcast

90%

22°

28°

Wed

7/22

Rain

90%

22°

31°

Thu

7/23

Mostly Cloudy

50%

19°

27°

Fri

7/24

Mostly Clear

44%

19°

27°

Sat

7/25

Overcast

51%

19°

27°

Sun

7/26

Rain

70%

18°

30°

Mon

7/27

Rain

71%

21°

33°

Tue

7/28

Thunderstorm

71%

21°

34°

Wed

7/29

Rain

69%

19°

31°

Thu

7/30

Drizzle

44%

19°

29°

Fri

7/31

Drizzle

60%

19°

29°

Sat

8/1

Drizzle

60%

21°

28°

Sun

8/2

Drizzle

60%

21°

28°

Mon

8/3

Drizzle

60%

21°

30°

Tue

8/4

Drizzle

60%

22°

31°

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

PM_2.5

Fine particulate matter

28 AQI 5.1 µg/m³

O₃

Ground-level ozone

Dominant

33 AQI 37 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Today 33 Good 33 28

Thu 40 Good 40 38

Fri 30 Good 30 26

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. PM_2.5 (fine particles) is reported in µg/m³ and ozone (O₃) in ppb. Forecast source: NWS NAQFC.

Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio

RAP

Valid Wed Jul 22, 02:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE703 J/kg

MLCAPE926 J/kg

MUCAPE1136 J/kg

SBCIN-39 J/kg

MLCIN0 J/kg

Lifted Index-2.4

Kinematics

0–6 km Shear40 kt

0–1 km Shear32 kt

Eff. Shear42 kt

0–1 km SRH-77

0–3 km SRH-75

Eff. SRH-75

Storm Motion226° @ 41 kt

0–1 km EHI-0.3

Composite Parameters

Sig. Tornado0.0

STP (eff)0.0

Supercell0.0

K-Index36.9

Thermo & Levels

PWAT2.46 in

0–3 km LR5.1 °C/km

700–500 LR5.4 °C/km

Total Totals47.5

LCL976 hPa

LFC812 hPa

EL216 hPa

Freezing Lvl15,456 ft

Lancaster County, Virginia, United States

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