Tornado Watch 9:00 PM Tornado Watch 9:00 PM Severe Thunderstorm Watch 9:00 PM Severe Thunderstorm Watch 9:00 PM Heat Advisory — Pointe Coupee, LA, West Feliciana, LA, East Feliciana, LA, St. Helena, LA, Washington, LA, Iberville, LA, West Baton Rouge, LA, East Baton Rouge, LA, Assumption, LA, St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower St. Bernard, LA, Northern Tangipahoa, LA, Southeast St. Tammany, LA, Western Orleans, LA, Eastern Orleans, LA, Northern St. Tammany, LA, Southwestern St. Tammany, LA, Central Tangipahoa, LA, Lower Tangipahoa, LA, Northern Livingston, LA, Southern Livingston, LA, Western Ascension, LA, Eastern Ascension, LA, Upper Jefferson, LA, Upper Plaquemines, LA, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS 8:00 PM Flash Flood Warning — New Castle County, DE, Camden County, NJ, Gloucester County, NJ, Salem County, NJ, Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA 8:45 PM Flash Flood Warning — Mercer County, NJ, Bucks County, PA, Montgomery County, PA, Philadelphia County, PA 9:30 PM Areal Flood Watch 1:00 AM

Philadelphia, Pennsylvania

Last updated: 6:56 PM CDT  ·  Refresh
23°C
Feels like 26°
Partly Cloudy
▲ 28°  /  ▼ 18°
Wind
8 mph N
Humidity
90%
Dew Point
22°
Pressure
29,83 inHg
Visibility
8 mi
UV Index
0,0
Cloud Cover
56%
Sunrise
6:17 AM
Sunset
7:50 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Philadelphia is currently partly cloudy at 23°C. Precipitation is likely — peak probability 72% around 8 PM. Atmospheric instability is elevated (CAPE up to 504 J/kg) — isolated convective development possible. Sunrise: 6:17AM · Sunset: 7:50PM.

Alerts

Tornado Watch
Expires 9:00 PM
Tornado Watch
Expires 9:00 PM
Severe Thunderstorm Watch
Expires 9:00 PM
Severe Thunderstorm Watch
Expires 9:00 PM
Heat Advisory
Pointe Coupee, LA, West Feliciana, LA, East Feliciana, LA, St. Helena, LA, Washington, LA, Iberville, LA, West Baton Rouge, LA, East Baton Rouge, LA, Assumption, LA, St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower St. Bernard, LA, Northern Tangipahoa, LA, Southeast St. Tammany, LA, Western Orleans, LA, Eastern Orleans, LA, Northern St. Tammany, LA, Southwestern St. Tammany, LA, Central Tangipahoa, LA, Lower Tangipahoa, LA, Northern Livingston, LA, Southern Livingston, LA, Western Ascension, LA, Eastern Ascension, LA, Upper Jefferson, LA, Upper Plaquemines, LA, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS
Expires 8:00 PM
Flash Flood Warning
New Castle County, DE, Camden County, NJ, Gloucester County, NJ, Salem County, NJ, Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA
Expires 8:45 PM
Flash Flood Warning
Mercer County, NJ, Bucks County, PA, Montgomery County, PA, Philadelphia County, PA
Expires 9:30 PM
Areal Flood Watch
Expires 1:00 AM
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
53%
8 PM
23°
72%
9 PM
21°
40%
10 PM
20°
32%
11 PM
20°
30%
12 AM
19°
30%
1 AM
19°
30%
2 AM
19°
18%
3 AM
18°
16%
4 AM
18°
16%
5 AM
18°
16%
6 AM
18°
17%
7 AM
18°
15%
8 AM
19°
8%
9 AM
21°
8%
10 AM
22°
8%
11 AM
22°
10%
12 PM
23°
5%
1 PM
26°
5%
2 PM
27°
10%
3 PM
27°
11%
4 PM
27°
11%
5 PM
26°
24%
6 PM
26°
26%
7-Day Forecast
Tonight
28° 18°
Partly Cloudy with a 53% chance of rain.
Fri
28° 18°
Partly Cloudy with a 30% chance of rain.
Sat
25° 19°
Overcast with a 78% chance of rain.
Sun
30° 19°
Mostly Cloudy with a 55% chance of rain.
Mon
28° 18°
Clear.
Tue
29° 18°
Drizzle, 62% chance.
Wed
31° 20°
Drizzle, 64% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Partly Cloudy 53% 8 mph N 90%
8 PM 23° Mostly Cloudy 72% 11 mph N 87%
9 PM 21° Mostly Cloudy 40% 11 mph N 86%
10 PM 20° Mostly Cloudy 32% 9 mph N 84%
11 PM 20° Mostly Cloudy 30% 7 mph N 83%
12 AM 19° Mostly Cloudy 30% 8 mph N 84%
1 AM 19° Partly Cloudy 30% 8 mph N 84%
2 AM 19° Mostly Cloudy 18% 8 mph N 84%
3 AM 18° Mostly Cloudy 16% 7 mph N 84%
4 AM 18° Mostly Cloudy 16% 7 mph N 83%
5 AM 18° Mostly Cloudy 16% 7 mph N 82%
6 AM 18° Mostly Cloudy 17% 7 mph N 79%
7 AM 18° Mostly Cloudy 15% 7 mph N 76%
8 AM 19° Partly Cloudy 8% 8 mph N 72%
9 AM 21° Partly Cloudy 8% 7 mph NNE 68%
10 AM 22° Mostly Clear 8% 7 mph NNE 64%
11 AM 22° Partly Cloudy 10% 6 mph NNE 60%
12 PM 23° Partly Cloudy 5% 6 mph NNE 57%
1 PM 26° Partly Cloudy 5% 5 mph NNE 54%
2 PM 27° Partly Cloudy 10% 5 mph NNE 53%
3 PM 27° Partly Cloudy 11% 5 mph NE 53%
4 PM 27° Mostly Clear 11% 5 mph NE 52%
5 PM 26° Mostly Clear 24% 4 mph NE 56%
6 PM 26° Partly Cloudy 26% 4 mph ENE 61%
15-Day Forecast
Today
8/20
Partly Cloudy
53%
18°
28°
Fri
8/21
Partly Cloudy
30%
18°
28°
Sat
8/22
Overcast
78%
19°
25°
Sun
8/23
Mostly Cloudy
55%
19°
30°
Mon
8/24
Clear
7%
18°
28°
Tue
8/25
Drizzle
62%
18°
29°
Wed
8/26
Drizzle
64%
20°
31°
Thu
8/27
Rain
83%
21°
29°
Fri
8/28
Drizzle
73%
21°
31°
Sat
8/29
Rain
54%
21°
31°
Sun
8/30
Clear
54%
19°
32°
Mon
8/31
Drizzle
60%
21°
31°
Tue
9/1
Drizzle
60%
21°
31°
Wed
9/2
Drizzle
60%
21°
31°
Thu
9/3
Drizzle
60%
21°
31°
52
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
52 AQI 9.9 µg/m³
O3
Ground-level ozone
36 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Fri 52 Moderate 36 52
Sat 50 Good 50 43
Sun 54 Moderate 25 54
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 jeu. août 20, 21:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE348 J/kg
MLCAPE755 J/kg
MUCAPE972 J/kg
SBCIN-51 J/kg
MLCIN-10 J/kg
Lifted Index-1.6
Kinematics
0–6 km Shear47 kt
0–1 km Shear15 kt
Eff. Shear47 kt
0–1 km SRH89
0–3 km SRH169
Eff. SRH169
Storm Motion269° @ 34 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.2
STP (eff)0.7
Supercell4.0
K-Index36.4
Thermo & Levels
PWAT2.31 in
0–3 km LR5.1 °C/km
700–500 LR5.3 °C/km
Total Totals45.8
LCL987 hPa
LFC796 hPa
EL315 hPa
Freezing Lvl14,426 ft