Westmoreland County, Pennsylvania, United States

Last updated: 7:44 AM CDT · Refresh

21°C

Feels like 21°

Mostly Cloudy

▲ 27° / ▼ 18°

Wind

9 mph WSW

Humidity

90%

Dew Point

20°

Pressure

28.70 inHg

Visibility

7 mi

UV Index

4.2

Cloud Cover

69%

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 21°C. Precipitation is likely — peak probability 75% around 12 AM. Atmospheric instability is elevated (CAPE up to 1570 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

21°

22%

9 AM

21°

38%

10 AM

21°

30%

11 AM

22°

38%

12 PM

23°

46%

1 PM

24°

55%

2 PM

24°

62%

3 PM

24°

63%

4 PM

24°

64%

5 PM

26°

64%

6 PM

23°

65%

7 PM

22°

69%

8 PM

21°

74%

9 PM

21°

74%

10 PM

20°

69%

11 PM

19°

70%

12 AM

19°

75%

1 AM

19°

63%

2 AM

19°

70%

3 AM

19°

61%

4 AM

19°

62%

5 AM

19°

53%

6 AM

19°

57%

7 AM

19°

49%

7-Day Forecast

Today

27° 18°

Mostly Cloudy with a 74% chance of rain.

Wed

25° 18°

Mostly Cloudy with a 70% chance of rain.

Thu

26° 17°

Overcast with a 65% chance of rain.

Fri

24° 13°

Drizzle, 67% chance.

Sat

25° 12°

Mostly Clear with a 37% chance of rain.

Sun

28° 17°

Heavy Rain, 86% chance.

Mon

24° 14°

Drizzle, 66% chance.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 21° Mostly Cloudy 22% 9 mph WSW 90%

9 AM 21° Mostly Cloudy 38% 10 mph SW 85%

10 AM 21° Overcast 30% 10 mph WSW 81%

11 AM 22° Overcast 38% 10 mph WSW 78%

12 PM 23° Overcast 46% 10 mph WSW 75%

1 PM 24° Overcast 55% 10 mph WSW 72%

2 PM 24° Overcast 62% 9 mph WSW 72%

3 PM 24° Overcast 63% 9 mph WSW 73%

4 PM 24° Mostly Cloudy 64% 9 mph WSW 74%

5 PM 26° Mostly Cloudy 64% 7 mph WSW 79%

6 PM 23° Overcast 65% 7 mph SW 86%

7 PM 22° Overcast 69% 6 mph SW 92%

8 PM 21° Heavy Rain 74% 6 mph SW 94%

9 PM 21° Rain 74% 6 mph SW 94%

10 PM 20° Rain 69% 7 mph SW 95%

11 PM 19° Overcast 70% 7 mph WSW 95%

12 AM 19° Overcast 75% 7 mph WSW 95%

1 AM 19° Overcast 63% 7 mph SW 95%

2 AM 19° Overcast 70% 6 mph SW 95%

3 AM 19° Overcast 61% 6 mph WSW 96%

4 AM 19° Rain 62% 6 mph WSW 96%

5 AM 19° Rain 53% 6 mph WSW 96%

6 AM 19° Overcast 57% 6 mph WSW 96%

7 AM 19° Overcast 49% 6 mph WSW 96%

15-Day Forecast

Today

8/11

Mostly Cloudy

74%

18°

27°

Wed

8/12

Mostly Cloudy

70%

18°

25°

Thu

8/13

Overcast

65%

17°

26°

Fri

8/14

Drizzle

67%

13°

24°

Sat

8/15

Mostly Clear

37%

12°

25°

Sun

8/16

Heavy Rain

86%

17°

28°

Mon

8/17

Drizzle

66%

14°

24°

Tue

8/18

Partly Cloudy

26%

14°

25°

Wed

8/19

Drizzle

47%

15°

27°

Thu

8/20

Drizzle

52%

16°

24°

Fri

8/21

Drizzle

60%

13°

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

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE392 J/kg

MLCAPE69 J/kg

MUCAPE392 J/kg

SBCIN0 J/kg

MLCIN0 J/kg

Lifted Index-1.8

Kinematics

0–6 km Shear27 kt

0–1 km Shear4 kt

Eff. Shear26 kt

0–1 km SRH35

0–3 km SRH104

Eff. SRH104

Storm Motion344° @ 21 kt

0–1 km EHI0.1

Composite Parameters

Sig. Tornado0.0

STP (eff)0.0

Supercell0.6

K-Index28.8

Thermo & Levels

PWAT1.35 in

0–3 km LR4.9 °C/km

700–500 LR6.0 °C/km

Total Totals44.8

LCL955 hPa

LFC972 hPa

EL267 hPa

Freezing Lvl12,982 ft

Westmoreland County, Pennsylvania, United States

Alerts