Lancaster County, Pennsylvania, United States

Last updated: 6:21 PM CDT · Refresh

23°C

Feels like 25°

Rain

▲ 28° / ▼ 21°

Wind

11 mph S

Humidity

92%

Dew Point

21°

Pressure

29.28 inHg

Visibility

10 mi

UV Index

1.1

Cloud Cover

94%

Sunrise

5:53 AM

Sunset

8:28 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Lancaster County is currently rain at 24°C. Precipitation is likely — peak probability 71% around 8 PM. Atmospheric instability is elevated (CAPE up to 963 J/kg) — isolated convective development possible. Sunrise: 5:53AM · Sunset: 8:28PM.

74 AQI · Moderate Dominant: PM2.5 Air Quality

Hourly Forecast · Next 24 Hours

Now

23°

59%

8 PM

25°

71%

9 PM

23°

47%

10 PM

23°

42%

11 PM

23°

45%

12 AM

23°

46%

1 AM

22°

51%

2 AM

22°

44%

3 AM

22°

44%

4 AM

22°

40%

5 AM

21°

27%

6 AM

21°

29%

7 AM

22°

24%

8 AM

23°

19%

9 AM

24°

16%

10 AM

24°

16%

11 AM

25°

13%

12 PM

26°

22%

1 PM

27°

23%

2 PM

28°

26%

3 PM

28°

24%

4 PM

27°

14%

5 PM

27°

11%

6 PM

26°

12%

7-Day Forecast

Tonight

28° 21°

Rain, 59% chance.

Wed

28° 16°

Mostly Clear with a 51% chance of rain.

Thu

27° 14°

Clear.

Fri

28° 15°

Mostly Clear.

Sat

28° 15°

Partly Cloudy.

Sun

29° 16°

Rain, 71% chance.

Mon

30° 18°

Drizzle, 63% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 23° Rain 59% 11 mph S 92%

8 PM 25° Overcast 71% 8 mph SSW 92%

9 PM 23° Mostly Cloudy 47% 6 mph SSW 92%

10 PM 23° Mostly Cloudy 42% 6 mph S 92%

11 PM 23° Partly Cloudy 45% 7 mph SSW 92%

12 AM 23° Partly Cloudy 46% 8 mph SSW 92%

1 AM 22° Mostly Cloudy 51% 8 mph SW 92%

2 AM 22° Mostly Cloudy 44% 7 mph SW 92%

3 AM 22° Partly Cloudy 44% 7 mph SW 93%

4 AM 22° Partly Cloudy 40% 7 mph SW 93%

5 AM 21° Partly Cloudy 27% 7 mph SW 93%

6 AM 21° Mostly Clear 29% 6 mph SW 91%

7 AM 22° Mostly Clear 24% 6 mph WSW 89%

8 AM 23° Mostly Clear 19% 8 mph W 85%

9 AM 24° Partly Cloudy 16% 9 mph W 78%

10 AM 24° Mostly Clear 16% 10 mph WNW 73%

11 AM 25° Mostly Clear 13% 11 mph WNW 68%

12 PM 26° Mostly Clear 22% 11 mph WNW 64%

1 PM 27° Mostly Clear 23% 12 mph WNW 60%

2 PM 28° Mostly Clear 26% 12 mph WNW 58%

3 PM 28° Mostly Clear 24% 11 mph WNW 57%

4 PM 27° Mostly Clear 14% 11 mph WNW 57%

5 PM 27° Mostly Clear 11% 10 mph WNW 58%

6 PM 26° Mostly Clear 12% 9 mph WNW 60%

15-Day Forecast

Today

7/21

Rain

59%

21°

28°

Wed

7/22

Mostly Clear

51%

16°

28°

Thu

7/23

Clear

14°

27°

Fri

7/24

Mostly Clear

15°

28°

Sat

7/25

Partly Cloudy

16%

15°

28°

Sun

7/26

Rain

71%

16°

29°

Mon

7/27

Drizzle

63%

18°

30°

Tue

7/28

Drizzle

63%

16°

28°

Wed

7/29

Drizzle

68%

16°

27°

Thu

7/30

Drizzle

68%

16°

28°

Fri

7/31

Drizzle

46%

17°

28°

Sat

8/1

Drizzle

60%

17°

28°

Sun

8/2

Drizzle

60%

17°

30°

Mon

8/3

Drizzle

60%

18°

29°

Tue

8/4

Rain

90%

18°

30°

Moderate

U.S. Air Quality Index · Dominant: PM2.5

50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today

PM_2.5

Fine particulate matter

Dominant

74 AQI 21.4 µg/m³

O₃

Ground-level ozone

37 AQI 41 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Wed 74 Moderate 37 74

Thu 56 Moderate 40 56

Fri 65 Moderate 43 65

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 Tue Jul 21, 22:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE532 J/kg

MLCAPE719 J/kg

MUCAPE1012 J/kg

SBCIN-298 J/kg

MLCIN0 J/kg

Lifted Index-3.1

Kinematics

0–6 km Shear38 kt

0–1 km Shear27 kt

Eff. Shear35 kt

0–1 km SRH134

0–3 km SRH182

Eff. SRH126

Storm Motion228° @ 35 kt

0–1 km EHI0.4

Composite Parameters

Sig. Tornado0.5

STP (eff)0.0

Supercell2.3

K-Index31.8

Thermo & Levels

PWAT1.90 in

0–3 km LR4.7 °C/km

700–500 LR6.4 °C/km

Total Totals47.4

LCL958 hPa

LFC696 hPa

EL251 hPa

Freezing Lvl13,589 ft

Lancaster County, Pennsylvania, United States

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