Excessive Heat Watch 8:00 PM

Philadelphia, Pennsylvania

Last updated: 3:41 PM CDT  ·  Refresh
31°C
Feels like 31°
Partly Cloudy
▲ 32°  /  ▼ 21°
Wind
4 mph WNW
Humidity
40%
Dew Point
17°
Pressure
29.94 inHg
Visibility
10 mi
UV Index
6.7
Cloud Cover
32%
Sunrise
6:11 AM
Sunset
7:58 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Philadelphia is currently partly cloudy at 31°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:11AM · Sunset: 7:58PM.

Alerts

Excessive Heat Watch
Expires 8:00 PM
64 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
31°
5%
5 PM
32°
10%
6 PM
32°
10%
7 PM
31°
10%
8 PM
29°
10%
9 PM
27°
10%
10 PM
27°
10%
11 PM
26°
8%
12 AM
25°
8%
1 AM
24°
3%
2 AM
23°
3%
3 AM
23°
3%
4 AM
23°
3%
5 AM
21°
3%
6 AM
21°
3%
7 AM
22°
3%
8 AM
22°
3%
9 AM
24°
3%
10 AM
26°
3%
11 AM
27°
5%
12 PM
28°
5%
1 PM
29°
5%
2 PM
29°
5%
3 PM
29°
6%
7-Day Forecast
Today
32° 21°
Partly Cloudy.
Sat
31° 21°
Mostly Clear.
Sun
28° 21°
Overcast with a 90% chance of rain.
Mon
31° 19°
Partly Cloudy with a 33% chance of rain.
Tue
34° 20°
Clear.
Wed
34° 22°
Rain, 81% chance.
Thu
34° 22°
Drizzle, 68% chance.
TimeTempConditionsPrecipWindHumidity
Now 31° Partly Cloudy 5% 4 mph WNW 40%
5 PM 32° Clear 10% 5 mph NW 40%
6 PM 32° Mostly Clear 10% 4 mph NNW 42%
7 PM 31° Partly Cloudy 10% 3 mph N 45%
8 PM 29° Mostly Clear 10% 4 mph NE 50%
9 PM 27° Partly Cloudy 10% 4 mph ENE 55%
10 PM 27° Partly Cloudy 10% 4 mph NE 61%
11 PM 26° Partly Cloudy 8% 4 mph N 65%
12 AM 25° Partly Cloudy 8% 4 mph N 67%
1 AM 24° Mostly Clear 3% 5 mph NNE 69%
2 AM 23° Partly Cloudy 3% 5 mph NNE 72%
3 AM 23° Partly Cloudy 3% 5 mph NNE 74%
4 AM 23° Partly Cloudy 3% 5 mph NNE 77%
5 AM 21° Mostly Clear 3% 6 mph NNE 78%
6 AM 21° Mostly Clear 3% 6 mph NNE 76%
7 AM 22° Mostly Clear 3% 7 mph NNE 74%
8 AM 22° Mostly Clear 3% 7 mph NNE 69%
9 AM 24° Mostly Clear 3% 6 mph NE 62%
10 AM 26° Clear 3% 6 mph NNE 55%
11 AM 27° Mostly Clear 5% 6 mph NNE 51%
12 PM 28° Mostly Clear 5% 6 mph NNE 48%
1 PM 29° Mostly Clear 5% 6 mph NNE 46%
2 PM 29° Mostly Clear 5% 5 mph NNE 45%
3 PM 29° Partly Cloudy 6% 5 mph NNE 44%
15-Day Forecast
Today
8/14
Partly Cloudy
10%
21°
32°
Sat
8/15
Mostly Clear
7%
21°
31°
Sun
8/16
Overcast
90%
21°
28°
Mon
8/17
Partly Cloudy
33%
19°
31°
Tue
8/18
Clear
3%
20°
34°
Wed
8/19
Rain
81%
22°
34°
Thu
8/20
Drizzle
68%
22°
34°
Fri
8/21
Drizzle
60%
21°
31°
Sat
8/22
Drizzle
60%
21°
31°
Sun
8/23
Drizzle
60%
20°
32°
Mon
8/24
Drizzle
60%
20°
32°
Tue
8/25
Drizzle
60%
22°
33°
Wed
8/26
Drizzle
60%
22°
32°
Thu
8/27
Drizzle
60%
21°
32°
Fri
8/28
Drizzle
60%
21°
32°
64
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
64 AQI 16.1 µg/m³
O3
Ground-level ozone
45 AQI 49 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 64 Moderate 45 64
Sun 54 Moderate 38 54
Mon 54 Moderate 31 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 Fri Aug 14, 19:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 90 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE174 J/kg
MLCAPE15 J/kg
MUCAPE174 J/kg
SBCIN0 J/kg
MLCIN-2 J/kg
Lifted Index0.9
Kinematics
0–6 km Shear40 kt
0–1 km Shear1 kt
Eff. Shear12 kt
0–1 km SRH-7
0–3 km SRH47
Eff. SRH47
Storm Motion326° @ 25 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index24.6
Thermo & Levels
PWAT1.48 in
0–3 km LR8.0 °C/km
700–500 LR4.5 °C/km
Total Totals38.3
LCL828 hPa
LFC1014 hPa
EL573 hPa
Freezing Lvl15,128 ft