Westmoreland County, Pennsylvania, United States

Last updated: 7:02 AM CDT · Refresh

20°C

Feels like 22°

Mostly Cloudy

▲ 27° / ▼ 18°

Wind

6 mph WSW

Humidity

94%

Dew Point

19°

Pressure

28.70 inHg

Visibility

6 mi

UV Index

2.9

Cloud Cover

77%

Sunrise

6:25 AM

Sunset

8:20 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Westmoreland County is currently mostly cloudy at 20°C. Precipitation is likely — peak probability 78% around 9 PM. Atmospheric instability is elevated (CAPE up to 1963 J/kg) — isolated convective development possible. Sunrise: 6:25AM · Sunset: 8:20PM.

52 AQI · Moderate Dominant: PM2.5 Air Quality

Hourly Forecast · Next 24 Hours

Now

20°

17%

9 AM

20°

38%

10 AM

21°

30%

11 AM

21°

38%

12 PM

22°

53%

1 PM

23°

65%

2 PM

24°

59%

3 PM

24°

63%

4 PM

24°

67%

5 PM

25°

68%

6 PM

24°

77%

7 PM

23°

78%

8 PM

22°

78%

9 PM

21°

78%

10 PM

21°

74%

11 PM

20°

67%

12 AM

19°

67%

1 AM

19°

73%

2 AM

19°

70%

3 AM

19°

70%

4 AM

19°

70%

5 AM

19°

61%

6 AM

19°

61%

7 AM

19°

63%

7-Day Forecast

Today

27° 18°

Heavy Rain, 78% chance.

Wed

26° 18°

Mostly Cloudy with a 70% chance of rain.

Thu

26° 17°

Overcast with a 65% chance of rain.

Fri

24° 13°

Drizzle, 63% chance.

Sat

25° 12°

Partly Cloudy with a 37% chance of rain.

Sun

28° 17°

Thunderstorm, 82% chance.

Mon

24° 15°

Drizzle, 66% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 20° Mostly Cloudy 17% 6 mph WSW 94%

9 AM 20° Overcast 38% 9 mph SW 89%

10 AM 21° Overcast 30% 9 mph WSW 85%

11 AM 21° Overcast 38% 9 mph WSW 80%

12 PM 22° Heavy Rain 53% 10 mph WSW 78%

1 PM 23° Overcast 65% 10 mph WSW 74%

2 PM 24° Overcast 59% 10 mph WSW 72%

3 PM 24° Overcast 63% 8 mph WSW 73%

4 PM 24° Mostly Cloudy 67% 9 mph WSW 74%

5 PM 25° Mostly Cloudy 68% 9 mph WSW 74%

6 PM 24° Heavy Rain 77% 7 mph WSW 80%

7 PM 23° Heavy Rain 78% 6 mph SW 87%

8 PM 22° Heavy Rain 78% 6 mph SW 93%

9 PM 21° Heavy Rain 78% 5 mph WSW 94%

10 PM 21° Rain 74% 6 mph WSW 94%

11 PM 20° Rain 67% 7 mph WSW 95%

12 AM 19° Overcast 67% 7 mph SW 95%

1 AM 19° Overcast 73% 7 mph SW 95%

2 AM 19° Overcast 70% 7 mph SW 96%

3 AM 19° Overcast 70% 7 mph SW 96%

4 AM 19° Overcast 70% 7 mph SW 97%

5 AM 19° Rain 61% 7 mph WSW 97%

6 AM 19° Rain 61% 6 mph WSW 97%

7 AM 19° Overcast 63% 5 mph SW 97%

15-Day Forecast

Today

8/11

Heavy Rain

78%

18°

27°

Wed

8/12

Mostly Cloudy

70%

18°

26°

Thu

8/13

Overcast

65%

17°

26°

Fri

8/14

Drizzle

63%

13°

24°

Sat

8/15

Partly Cloudy

37%

12°

25°

Sun

8/16

Thunderstorm

82%

17°

28°

Mon

8/17

Drizzle

66%

15°

24°

Tue

8/18

Partly Cloudy

26%

14°

25°

Wed

8/19

Drizzle

47%

16°

27°

Thu

8/20

Drizzle

52%

16°

24°

Fri

8/21

Drizzle

60%

14°

26°

Sat

8/22

Drizzle

60%

15°

26°

Sun

8/23

Drizzle

60%

15°

26°

Mon

8/24

Drizzle

60%

14°

24°

Tue

8/25

Drizzle

60%

14°

23°

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

52 AQI 9.8 µg/m³

O₃

Ground-level ozone

40 AQI 44 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Wed 52 Moderate 40 52

Thu 48 Good 39 48

Fri 52 Moderate 42 52

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 Aug 11, 10:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE294 J/kg

MLCAPE107 J/kg

MUCAPE294 J/kg

SBCIN0 J/kg

MLCIN0 J/kg

Lifted Index-1.7

Kinematics

0–6 km Shear29 kt

0–1 km Shear7 kt

Eff. Shear31 kt

0–1 km SRH68

0–3 km SRH160

Eff. SRH160

Storm Motion336° @ 22 kt

0–1 km EHI0.1

Composite Parameters

Sig. Tornado0.1

STP (eff)0.1

Supercell0.8

K-Index34.5

Thermo & Levels

PWAT1.61 in

0–3 km LR4.9 °C/km

700–500 LR5.9 °C/km

Total Totals46.7

LCL959 hPa

LFC972 hPa

EL309 hPa

Freezing Lvl12,579 ft

Westmoreland County, Pennsylvania, United States

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