Flood Warning — Allegheny County, PA, Beaver County, PA, Fayette County, PA, Greene County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Hancock County, WV 2:45 PM Areal Flood Warning — Allegheny County, PA, Armstrong County, PA, Fayette County, PA, Indiana County, PA, Westmoreland County, PA 4:00 PM

Fayette County, Pennsylvania, United States

Last updated: 2:02 PM CDT  ·  Refresh
21°C
Feels like 23°
Overcast
▲ 22°  /  ▼ 13°
Wind
4 mph NW
Humidity
95%
Dew Point
19°
Pressure
28.61 inHg
Visibility
6 mi
UV Index
3.6
Cloud Cover
92%
Sunrise
6:35 AM
Sunset
8:08 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Fayette County is currently overcast at 20°C. Precipitation is likely — peak probability 68% around 3 PM. Sunrise: 6:35AM · Sunset: 8:08PM.

Alerts

Flood Warning
Allegheny County, PA, Beaver County, PA, Fayette County, PA, Greene County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Hancock County, WV
Expires 2:45 PM
Areal Flood Warning
Allegheny County, PA, Armstrong County, PA, Fayette County, PA, Indiana County, PA, Westmoreland County, PA
Expires 4:00 PM
44 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
21°
68%
4 PM
22°
51%
5 PM
22°
44%
6 PM
22°
27%
7 PM
22°
26%
8 PM
21°
17%
9 PM
20°
4%
10 PM
18°
4%
11 PM
17°
3%
12 AM
17°
6%
1 AM
16°
15%
2 AM
16°
15%
3 AM
15°
18%
4 AM
15°
18%
5 AM
14°
27%
6 AM
14°
31%
7 AM
14°
31%
8 AM
15°
31%
9 AM
17°
31%
10 AM
18°
32%
11 AM
19°
32%
12 PM
20°
36%
1 PM
21°
27%
2 PM
23°
30%
7-Day Forecast
Today
22° 13°
Mostly Cloudy with a 68% chance of rain.
Fri
24° 13°
Fog with a 31% chance of rain.
Sat
26° 17°
Mostly Cloudy with a 71% chance of rain.
Sun
22° 13°
Mostly Cloudy with a 64% chance of rain.
Mon
23° 12°
Clear with a 33% chance of rain.
Tue
26° 12°
Drizzle, 62% chance.
Wed
25° 14°
Rain, 71% chance.
TimeTempConditionsPrecipWindHumidity
Now 21° Overcast 68% 4 mph NW 95%
4 PM 22° Overcast 51% 4 mph NW 90%
5 PM 22° Mostly Cloudy 44% 5 mph NNW 87%
6 PM 22° Mostly Cloudy 27% 5 mph N 89%
7 PM 22° Mostly Cloudy 26% 6 mph NNE 92%
8 PM 21° Partly Cloudy 17% 6 mph NNE 94%
9 PM 20° Mostly Clear 4% 4 mph NNE 94%
10 PM 18° Mostly Clear 4% 4 mph NE 94%
11 PM 17° Mostly Clear 3% 4 mph ENE 94%
12 AM 17° Mostly Clear 6% 4 mph ENE 94%
1 AM 16° Partly Cloudy 15% 5 mph E 93%
2 AM 16° Partly Cloudy 15% 5 mph E 93%
3 AM 15° Fog 18% 5 mph E 92%
4 AM 15° Fog 18% 5 mph E 92%
5 AM 14° Fog 27% 5 mph E 92%
6 AM 14° Fog 31% 5 mph E 91%
7 AM 14° Fog 31% 5 mph E 90%
8 AM 15° Fog 31% 4 mph E 89%
9 AM 17° Fog 31% 5 mph E 84%
10 AM 18° Fog 32% 5 mph E 81%
11 AM 19° Fog 32% 5 mph E 78%
12 PM 20° Partly Cloudy 36% 5 mph E 76%
1 PM 21° Mostly Clear 27% 6 mph E 73%
2 PM 23° Mostly Clear 30% 6 mph ESE 71%
15-Day Forecast
Today
8/20
Mostly Cloudy
68%
13°
22°
Fri
8/21
Fog
31%
13°
24°
Sat
8/22
Mostly Cloudy
71%
17°
26°
Sun
8/23
Mostly Cloudy
64%
13°
22°
Mon
8/24
Clear
33%
12°
23°
Tue
8/25
Drizzle
62%
12°
26°
Wed
8/26
Rain
71%
14°
25°
Thu
8/27
Rain
63%
15°
24°
Fri
8/28
Drizzle
44%
14°
27°
Sat
8/29
Drizzle
51%
16°
29°
Sun
8/30
Drizzle
60%
17°
26°
Mon
8/31
Drizzle
60%
16°
26°
Tue
9/1
Drizzle
60%
15°
25°
Wed
9/2
Drizzle
60%
14°
26°
Thu
9/3
Drizzle
60%
14°
26°
44
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
PM2.5
Fine particulate matter
Dominant
44 AQI 7.9 µg/m³
O3
Ground-level ozone
35 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Fri 44 Good 35 44
Sat 34 Good 34 19
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. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
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
10 20 30 40 50 60 70 80 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE244 J/kg
MLCAPE120 J/kg
MUCAPE244 J/kg
SBCIN0 J/kg
MLCIN-1 J/kg
Lifted Index-1.0
Kinematics
0–6 km Shear38 kt
0–1 km Shear9 kt
Eff. Shear32 kt
0–1 km SRH7
0–3 km SRH46
Eff. SRH46
Storm Motion270° @ 31 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.2
K-Index36.1
Thermo & Levels
PWAT1.89 in
0–3 km LR5.3 °C/km
700–500 LR5.3 °C/km
Total Totals44.5
LCL955 hPa
LFC969 hPa
EL408 hPa
Freezing Lvl12,507 ft