Freeze Warning — Tuscarawas, OH, Carroll, OH, Columbiana, OH, Coshocton, OH, Harrison, OH, Jefferson, OH, Muskingum, OH, Guernsey, OH, Belmont, OH, Noble, OH, Monroe, OH, Mercer, PA, Venango, PA, Forest, PA, Lawrence, PA, Butler, PA, Clarion, PA, Jefferson, PA, Beaver, PA, Allegheny, PA, Armstrong, PA, Washington, PA, Greene, PA, Westmoreland, PA, Westmoreland Ridges, PA, Fayette, PA, Fayette Ridges, PA, Indiana, PA, Higher Elevations of Indiana, PA, Hancock, WV, Brooke, WV, Ohio, WV, Marshall, WV, Wetzel, WV, Marion, WV, Monongalia, WV, Ridges of Eastern Monongalia and Northwestern Preston, WV, Preston, WV, Eastern Preston, WV, Western Tucker, WV, Eastern Tucker, WV 8:00 AM

Allegheny County, Pennsylvania, United States

Last updated: 1:49 AM CDT  ·  Refresh
9°C
Feels like 6°
Overcast
▲ 11°  /  ▼ 2°
Wind
10 mph NNW
Humidity
83%
Dew Point
6°
Pressure
29.10 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
97%
Sunrise
7:33 AM
Sunset
6:36 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Allegheny County is currently overcast at 9°C. Dry conditions are expected through the next 24 hours. Sunrise: 7:33AM · Sunset: 6:36PM.

Alerts

Freeze Warning
Tuscarawas, OH, Carroll, OH, Columbiana, OH, Coshocton, OH, Harrison, OH, Jefferson, OH, Muskingum, OH, Guernsey, OH, Belmont, OH, Noble, OH, Monroe, OH, Mercer, PA, Venango, PA, Forest, PA, Lawrence, PA, Butler, PA, Clarion, PA, Jefferson, PA, Beaver, PA, Allegheny, PA, Armstrong, PA, Washington, PA, Greene, PA, Westmoreland, PA, Westmoreland Ridges, PA, Fayette, PA, Fayette Ridges, PA, Indiana, PA, Higher Elevations of Indiana, PA, Hancock, WV, Brooke, WV, Ohio, WV, Marshall, WV, Wetzel, WV, Marion, WV, Monongalia, WV, Ridges of Eastern Monongalia and Northwestern Preston, WV, Preston, WV, Eastern Preston, WV, Western Tucker, WV, Eastern Tucker, WV
Expires 8:00 AM
31 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
9°
22%
3 AM
9°
18%
4 AM
8°
25%
5 AM
7°
25%
6 AM
7°
16%
7 AM
6°
12%
8 AM
6°
12%
9 AM
7°
13%
10 AM
7°
13%
11 AM
8°
3%
12 PM
9°
3%
1 PM
10°
3%
2 PM
11°
3%
3 PM
11°
3%
4 PM
11°
3%
5 PM
10°
3%
6 PM
9°
3%
7 PM
8°
3%
8 PM
8°
3%
9 PM
7°
3%
10 PM
7°
3%
11 PM
6°
3%
12 AM
6°
3%
1 AM
6°
3%
7-Day Forecast
Today
11° 2°
Mostly Clear with a 25% chance of rain.
Sun
17° 2°
Clear.
Mon
21° 3°
Mostly Clear.
Tue
20° 4°
Partly Cloudy.
Wed
21° 4°
Clear.
Thu
21° 4°
Clear.
Fri
22° 6°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 9° Overcast 22% 10 mph NNW 83%
3 AM 9° Overcast 18% 10 mph NNW 80%
4 AM 8° Mostly Cloudy 25% 10 mph NNW 81%
5 AM 7° Mostly Cloudy 25% 10 mph NNW 82%
6 AM 7° Partly Cloudy 16% 10 mph N 82%
7 AM 6° Partly Cloudy 12% 10 mph N 81%
8 AM 6° Partly Cloudy 12% 11 mph N 75%
9 AM 7° Partly Cloudy 13% 11 mph N 68%
10 AM 7° Partly Cloudy 13% 11 mph N 62%
11 AM 8° Partly Cloudy 3% 11 mph N 57%
12 PM 9° Partly Cloudy 3% 10 mph N 53%
1 PM 10° Mostly Clear 3% 9 mph N 49%
2 PM 11° Mostly Clear 3% 8 mph NNW 48%
3 PM 11° Clear 3% 8 mph NNW 48%
4 PM 11° Clear 3% 7 mph NNW 49%
5 PM 10° Clear 3% 6 mph NNW 54%
6 PM 9° Clear 3% 5 mph NW 60%
7 PM 8° Clear 3% 5 mph NW 65%
8 PM 8° Clear 3% 4 mph NW 68%
9 PM 7° Clear 3% 4 mph NNW 69%
10 PM 7° Clear 3% 4 mph NNW 70%
11 PM 6° Clear 3% 3 mph NNW 72%
12 AM 6° Clear 3% 3 mph NNW 74%
1 AM 6° Clear 3% 3 mph N 76%
15-Day Forecast
Today
10/17
Mostly Clear
25%
2°
11°
Sun
10/18
Clear
18%
2°
17°
Mon
10/19
Mostly Clear
16%
3°
21°
Tue
10/20
Partly Cloudy
3%
4°
20°
Wed
10/21
Clear
3%
4°
21°
Thu
10/22
Clear
3%
4°
21°
Fri
10/23
Clear
3%
6°
22°
Sat
10/24
Clear
3%
4°
21°
Sun
10/25
Clear
3%
7°
22°
Mon
10/26
Clear
12%
6°
21°
Tue
10/27
Clear
25%
8°
19°
Wed
10/28
Drizzle
60%
7°
19°
Thu
10/29
Drizzle
60%
6°
18°
Fri
10/30
Drizzle
60%
7°
19°
Sat
10/31
Drizzle
60%
8°
17°
31
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
21 AQI 3.8 µg/m³
O3
Ground-level ozone
Dominant
31 AQI 34 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 31 Good 31 21
Sun 31 Good 31 3
Mon 21 Good 21 11
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 Sat Oct 17, 05:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 90 100 110 120 130 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE7 J/kg
MLCAPE9 J/kg
MUCAPE0 J/kg
SBCIN-20 J/kg
MLCIN-4 J/kg
Lifted Index12.8
Kinematics
0–6 km Shear90 kt
0–1 km Shear19 kt
Eff. Shear—
0–1 km SRH-146
0–3 km SRH-75
Eff. SRH—
Storm Motion272° @ 34 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index13.4
Thermo & Levels
PWAT0.72 in
0–3 km LR5.6 °C/km
700–500 LR3.9 °C/km
Total Totals31.1
LCL950 hPa
LFC902 hPa
EL834 hPa
Freezing Lvl4,147 ft