Extreme Heat Warning — St. James, LA, St. John The Baptist, LA, Upper St. Bernard, 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 Jefferson, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS 8:00 PM

Philadelphia, Pennsylvania

Last updated: 5:19 PM CDT  ·  Refresh
29°C
Feels like 33°
Partly Cloudy
▲ 31°  /  ▼ 22°
Wind
3 mph W
Humidity
63%
Dew Point
23°
Pressure
29.71 inHg
Visibility
10 mi
UV Index
3.7
Cloud Cover
49%
Sunrise
6:14 AM
Sunset
7:54 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Philadelphia is currently partly cloudy at 30°C. Precipitation is likely — peak probability 70% around 10 PM. Atmospheric instability is elevated (CAPE up to 1530 J/kg) — isolated convective development possible. Sunrise: 6:14AM · Sunset: 7:54PM.

Alerts

Extreme Heat Warning
St. James, LA, St. John The Baptist, LA, Upper St. Bernard, 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 Jefferson, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS
Expires 8:00 PM
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
29°
44%
7 PM
29°
66%
8 PM
28°
68%
9 PM
27°
66%
10 PM
26°
69%
11 PM
26°
54%
12 AM
26°
52%
1 AM
25°
40%
2 AM
24°
23%
3 AM
24°
38%
4 AM
24°
30%
5 AM
22°
23%
6 AM
22°
23%
7 AM
22°
19%
8 AM
23°
11%
9 AM
23°
19%
10 AM
24°
19%
11 AM
25°
18%
12 PM
26°
9%
1 PM
29°
3%
2 PM
29°
3%
3 PM
29°
3%
4 PM
29°
3%
5 PM
28°
3%
7-Day Forecast
Tonight
31° 22°
Partly Cloudy with a 66% chance of rain.
Tue
32° 22°
Partly Cloudy with a 52% chance of rain.
Wed
32° 20°
Clear.
Thu
31° 21°
Partly Cloudy with a 73% chance of rain.
Fri
30° 20°
Drizzle, 71% chance.
Sat
29° 19°
Rain, 74% chance.
Sun
30° 19°
Drizzle, 78% chance.
TimeTempConditionsPrecipWindHumidity
Now 29° Partly Cloudy 44% 3 mph W 63%
7 PM 29° Partly Cloudy 66% 3 mph W 70%
8 PM 28° Heavy Rain 68% 3 mph WSW 75%
9 PM 27° Mostly Cloudy 66% 3 mph SW 79%
10 PM 26° Partly Cloudy 69% 3 mph WNW 83%
11 PM 26° Partly Cloudy 54% 2 mph NW 86%
12 AM 26° Mostly Cloudy 52% 2 mph N 87%
1 AM 25° Mostly Cloudy 40% 3 mph N 87%
2 AM 24° Mostly Cloudy 23% 3 mph NNE 88%
3 AM 24° Mostly Cloudy 38% 4 mph NNE 88%
4 AM 24° Mostly Cloudy 30% 4 mph N 88%
5 AM 22° Partly Cloudy 23% 4 mph N 87%
6 AM 22° Partly Cloudy 23% 4 mph N 86%
7 AM 22° Partly Cloudy 19% 5 mph N 85%
8 AM 23° Partly Cloudy 11% 5 mph N 83%
9 AM 23° Partly Cloudy 19% 5 mph N 79%
10 AM 24° Partly Cloudy 19% 5 mph NNW 75%
11 AM 25° Partly Cloudy 18% 5 mph NNW 71%
12 PM 26° Partly Cloudy 9% 5 mph NNW 65%
1 PM 29° Mostly Clear 3% 4 mph NW 60%
2 PM 29° Mostly Clear 3% 4 mph NW 57%
3 PM 29° Mostly Clear 3% 5 mph NW 56%
4 PM 29° Mostly Clear 3% 5 mph NW 55%
5 PM 28° Partly Cloudy 3% 5 mph NW 55%
15-Day Forecast
Today
8/17
Partly Cloudy
66%
22°
31°
Tue
8/18
Partly Cloudy
52%
22°
32°
Wed
8/19
Clear
7%
20°
32°
Thu
8/20
Partly Cloudy
73%
21°
31°
Fri
8/21
Drizzle
71%
20°
30°
Sat
8/22
Rain
74%
19°
29°
Sun
8/23
Drizzle
78%
19°
30°
Mon
8/24
Drizzle
60%
18°
31°
Tue
8/25
Mostly Clear
43%
19°
31°
Wed
8/26
Drizzle
68%
21°
32°
Thu
8/27
Drizzle
67%
20°
31°
Fri
8/28
Drizzle
60%
20°
29°
Sat
8/29
Drizzle
60%
19°
30°
Sun
8/30
Drizzle
60%
19°
29°
Mon
8/31
Drizzle
60%
19°
29°
53
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
53 AQI 10.4 µg/m³
O3
Ground-level ozone
47 AQI 52 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 53 Moderate 47 53
Wed 55 Moderate 47 55
Thu 61 Moderate 50 61
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, 21:00'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
SBCAPE1687 J/kg
MLCAPE1489 J/kg
MUCAPE1687 J/kg
SBCIN-5 J/kg
MLCIN-4 J/kg
Lifted Index-5.0
Kinematics
0–6 km Shear27 kt
0–1 km Shear5 kt
Eff. Shear29 kt
0–1 km SRH17
0–3 km SRH47
Eff. SRH47
Storm Motion327° @ 22 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.1
STP (eff)0.2
Supercell1.2
K-Index36.0
Thermo & Levels
PWAT2.23 in
0–3 km LR6.4 °C/km
700–500 LR5.9 °C/km
Total Totals46.9
LCL911 hPa
LFC896 hPa
EL168 hPa
Freezing Lvl15,984 ft