Areal Flood Watch 7:00 AM

Allegheny County, Pennsylvania, United States

Last updated: 2:05 AM CDT  ·  Refresh
22°C
Feels like 26°
Mostly Cloudy
▲ 26°  /  ▼ 17°
Wind
5 mph WSW
Humidity
98%
Dew Point
22°
Pressure
28.91 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
76%
Sunrise
6:32 AM
Sunset
8:14 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Allegheny County is currently mostly cloudy at 22°C. Precipitation is likely — peak probability 77% around 12 PM. Atmospheric instability is elevated (CAPE up to 1120 J/kg) — isolated convective development possible. Sunrise: 6:32AM · Sunset: 8:14PM.

Alerts

Areal Flood Watch
Expires 7:00 AM
60 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
22°
37%
4 AM
23°
43%
5 AM
23°
43%
6 AM
22°
29%
7 AM
22°
36%
8 AM
23°
46%
9 AM
23°
51%
10 AM
23°
51%
11 AM
24°
72%
12 PM
24°
77%
1 PM
24°
77%
2 PM
25°
64%
3 PM
25°
54%
4 PM
25°
58%
5 PM
25°
45%
6 PM
26°
42%
7 PM
25°
37%
8 PM
24°
12%
9 PM
24°
12%
10 PM
22°
9%
11 PM
22°
8%
12 AM
21°
8%
1 AM
21°
12%
2 AM
19°
12%
7-Day Forecast
Today
26° 17°
Rain, 77% chance.
Tue
28° 17°
Partly Cloudy.
Wed
27° 17°
Overcast with a 43% chance of rain.
Thu
23° 16°
Fog with a 58% chance of rain.
Fri
24° 16°
Rain, 29% chance.
Sat
26° 16°
Rain, 70% chance.
Sun
25° 15°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 22° Mostly Cloudy 37% 5 mph WSW 98%
4 AM 23° Mostly Cloudy 43% 5 mph WSW 98%
5 AM 23° Overcast 43% 6 mph W 98%
6 AM 22° Overcast 29% 5 mph W 97%
7 AM 22° Overcast 36% 4 mph WSW 97%
8 AM 23° Mostly Cloudy 46% 5 mph W 96%
9 AM 23° Mostly Cloudy 51% 6 mph W 93%
10 AM 23° Overcast 51% 6 mph W 89%
11 AM 24° Overcast 72% 7 mph W 86%
12 PM 24° Rain 77% 7 mph W 84%
1 PM 24° Overcast 77% 6 mph WNW 83%
2 PM 25° Mostly Cloudy 64% 7 mph WNW 82%
3 PM 25° Overcast 54% 6 mph WNW 81%
4 PM 25° Overcast 58% 6 mph WNW 81%
5 PM 25° Overcast 45% 6 mph WNW 82%
6 PM 26° Mostly Cloudy 42% 5 mph WNW 83%
7 PM 25° Partly Cloudy 37% 4 mph NW 86%
8 PM 24° Partly Cloudy 12% 4 mph NW 86%
9 PM 24° Partly Cloudy 12% 4 mph NNW 87%
10 PM 22° Mostly Clear 9% 4 mph NNW 88%
11 PM 22° Mostly Clear 8% 4 mph NNW 89%
12 AM 21° Partly Cloudy 8% 4 mph NNW 91%
1 AM 21° Partly Cloudy 12% 3 mph NNW 93%
2 AM 19° Partly Cloudy 12% 3 mph NNW 95%
15-Day Forecast
Today
8/17
Rain
77%
17°
26°
Tue
8/18
Partly Cloudy
13%
17°
28°
Wed
8/19
Overcast
43%
17°
27°
Thu
8/20
Fog
58%
16°
23°
Fri
8/21
Rain
29%
16°
24°
Sat
8/22
Rain
70%
16°
26°
Sun
8/23
Rain
63%
15°
25°
Mon
8/24
Drizzle
43%
12°
24°
Tue
8/25
Drizzle
44%
13°
26°
Wed
8/26
Drizzle
60%
16°
27°
Thu
8/27
Drizzle
60%
17°
27°
Fri
8/28
Drizzle
60%
16°
25°
Sat
8/29
Drizzle
60%
15°
25°
Sun
8/30
Clear
25%
15°
26°
Mon
8/31
Clear
60%
16°
27°
60
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
PM2.5
Fine particulate matter
Dominant
60 AQI 14.0 µg/m³
O3
Ground-level ozone
33 AQI 36 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 60 Moderate 33 60
Tue 54 Moderate 43 54
Wed 53 Moderate 44 53
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 Mon Aug 17, 05:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE402 J/kg
MLCAPE497 J/kg
MUCAPE686 J/kg
SBCIN-9 J/kg
MLCIN-3 J/kg
Lifted Index-1.1
Kinematics
0–6 km Shear16 kt
0–1 km Shear14 kt
Eff. Shear16 kt
0–1 km SRH69
0–3 km SRH72
Eff. SRH72
Storm Motion334° @ 19 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.7
Thermo & Levels
PWAT2.03 in
0–3 km LR4.6 °C/km
700–500 LR5.2 °C/km
Total Totals41.5
LCL973 hPa
LFC887 hPa
EL257 hPa
Freezing Lvl15,016 ft