Westmoreland County, Pennsylvania, United States

Last updated: 2:06 PM CDT · Refresh

21°C

Feels like 22°

Overcast

▲ 22° / ▼ 13°

Wind

5 mph N

Humidity

92%

Dew Point

19°

Pressure

28.67 inHg

Visibility

9 mi

UV Index

4.1

Cloud Cover

89%

Sunrise

6:34 AM

Sunset

8:07 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Westmoreland County is currently overcast at 20°C. Precipitation is likely — peak probability 68% around 3 PM. Sunrise: 6:34AM · Sunset: 8:07PM.

46 AQI · Good Dominant: PM2.5 Air Quality

Hourly Forecast · Next 24 Hours

Now

21°

68%

4 PM

21°

51%

5 PM

21°

44%

6 PM

21°

45%

7 PM

21°

26%

8 PM

19°

9 PM

19°

10 PM

17°

11 PM

16°

12 AM

16°

1 AM

15°

15%

2 AM

14°

15%

3 AM

14°

15%

4 AM

14°

15%

5 AM

14°

18%

6 AM

13°

18%

7 AM

13°

18%

8 AM

14°

18%

9 AM

16°

22%

10 AM

17°

13%

11 AM

18°

23%

12 PM

19°

23%

1 PM

21°

23%

2 PM

23°

26%

7-Day Forecast

Today

22° 13°

Mostly Cloudy with a 68% chance of rain.

Fri

24° 13°

Mostly Clear with a 26% chance of rain.

Sat

27° 17°

Partly Cloudy with a 59% chance of rain.

Sun

23° 13°

Mostly Cloudy with a 69% chance of rain.

Mon

24° 12°

Clear with a 33% chance of rain.

Tue

27° 12°

Drizzle, 62% chance.

Wed

26° 14°

Drizzle, 53% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 21° Overcast 68% 5 mph N 92%

4 PM 21° Mostly Cloudy 51% 6 mph NNW 89%

5 PM 21° Mostly Cloudy 44% 7 mph N 85%

6 PM 21° Mostly Cloudy 45% 6 mph NNE 88%

7 PM 21° Partly Cloudy 26% 7 mph NNE 90%

8 PM 19° Partly Cloudy 3% 6 mph NE 91%

9 PM 19° Mostly Clear 3% 5 mph NE 93%

10 PM 17° Clear 6% 5 mph NE 94%

11 PM 16° Mostly Clear 6% 4 mph NE 95%

12 AM 16° Mostly Clear 6% 4 mph ENE 96%

1 AM 15° Mostly Clear 15% 4 mph ENE 96%

2 AM 14° Partly Cloudy 15% 4 mph ENE 96%

3 AM 14° Fog 15% 4 mph NE 96%

4 AM 14° Fog 15% 4 mph NE 96%

5 AM 14° Fog 18% 4 mph NE 96%

6 AM 13° Fog 18% 4 mph NE 95%

7 AM 13° Fog 18% 4 mph NE 94%

8 AM 14° Fog 18% 5 mph NE 92%

9 AM 16° Fog 22% 5 mph ENE 86%

10 AM 17° Fog 13% 5 mph ENE 82%

11 AM 18° Fog 23% 6 mph ENE 78%

12 PM 19° Partly Cloudy 23% 6 mph ENE 75%

1 PM 21° Mostly Clear 23% 6 mph E 72%

2 PM 23° Partly Cloudy 26% 6 mph E 69%

15-Day Forecast

Today

8/20

Mostly Cloudy

68%

13°

22°

Fri

8/21

Mostly Clear

26%

13°

24°

Sat

8/22

Partly Cloudy

59%

17°

27°

Sun

8/23

Mostly Cloudy

69%

13°

23°

Mon

8/24

Clear

33%

12°

24°

Tue

8/25

Drizzle

62%

12°

27°

Wed

8/26

Drizzle

53%

14°

26°

Thu

8/27

Rain

82%

15°

26°

Fri

8/28

Rain

68%

14°

27°

Sat

8/29

Drizzle

51%

16°

29°

Sun

8/30

Drizzle

60%

17°

27°

Mon

8/31

Drizzle

60%

16°

27°

Tue

9/1

Drizzle

60%

15°

26°

Wed

9/2

Drizzle

60%

14°

27°

Thu

9/3

Drizzle

60%

14°

27°

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

PM_2.5

Fine particulate matter

Dominant

46 AQI 8.2 µg/m³

O₃

Ground-level ozone

27 AQI 30 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Fri 46 Good 27 46

Sat 35 Good 35 21

Sun 42 Good 42 33

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 Thu Aug 20, 17:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE228 J/kg

MLCAPE153 J/kg

MUCAPE228 J/kg

SBCIN-1 J/kg

MLCIN-12 J/kg

Lifted Index-0.8

Kinematics

0–6 km Shear41 kt

0–1 km Shear11 kt

Eff. Shear32 kt

0–1 km SRH46

0–3 km SRH64

Eff. SRH64

Storm Motion275° @ 30 kt

0–1 km EHI0.1

Composite Parameters

Sig. Tornado0.1

STP (eff)0.0

Supercell0.2

K-Index34.5

Thermo & Levels

PWAT1.81 in

0–3 km LR5.5 °C/km

700–500 LR5.2 °C/km

Total Totals44.9

LCL955 hPa

LFC856 hPa

EL408 hPa

Freezing Lvl12,231 ft

Westmoreland County, Pennsylvania, United States

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