Excessive Heat Watch 7:00 PM Excessive Heat Warning — Delaware, PA, Philadelphia, PA, Eastern Chester, PA, Eastern Montgomery, PA, Lower Bucks, PA, Kent, MD, Queen Anne's, MD, Talbot, MD, Caroline, MD, Berks, PA, Lehigh, PA, Northampton, PA, Western Chester, PA, Western Montgomery, PA, Upper Bucks, PA, Somerset, NJ, Middlesex, NJ, Western Monmouth, NJ, Eastern Monmouth, NJ, Ocean, NJ, Southeastern Burlington, NJ, Cumberland, NJ, Atlantic, NJ, Cape May, NJ, Carbon, PA, Monroe, PA, Atlantic Coastal Cape May, NJ, Coastal Atlantic, NJ, Coastal Ocean, NJ 7:00 PM

Philadelphia, Pennsylvania

Last updated: 8:26 PM CDT  ·  Refresh
33°C
Feels like 37°
Clear
▲ 38°  /  ▼ 26°
Wind
6 mph SW
Humidity
48%
Dew Point
23°
Pressure
29.87 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
6%
Sunrise
5:36 AM
Sunset
8:33 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Philadelphia is currently clear at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2578 J/kg) — isolated convective development possible. Sunrise: 5:36AM · Sunset: 8:33PM.

Alerts

Excessive Heat Watch
Expires 7:00 PM
Excessive Heat Warning
Delaware, PA, Philadelphia, PA, Eastern Chester, PA, Eastern Montgomery, PA, Lower Bucks, PA, Kent, MD, Queen Anne's, MD, Talbot, MD, Caroline, MD, Berks, PA, Lehigh, PA, Northampton, PA, Western Chester, PA, Western Montgomery, PA, Upper Bucks, PA, Somerset, NJ, Middlesex, NJ, Western Monmouth, NJ, Eastern Monmouth, NJ, Ocean, NJ, Southeastern Burlington, NJ, Cumberland, NJ, Atlantic, NJ, Cape May, NJ, Carbon, PA, Monroe, PA, Atlantic Coastal Cape May, NJ, Coastal Atlantic, NJ, Coastal Ocean, NJ
Expires 7:00 PM
93 AQI · Moderate Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
11%
10 PM
33°
21%
11 PM
32°
21%
12 AM
32°
21%
1 AM
31°
21%
2 AM
30°
3%
3 AM
29°
3%
4 AM
28°
3%
5 AM
26°
3%
6 AM
27°
3%
7 AM
29°
3%
8 AM
31°
3%
9 AM
32°
3%
10 AM
33°
3%
11 AM
35°
3%
12 PM
36°
3%
1 PM
38°
3%
2 PM
38°
11%
3 PM
38°
24%
4 PM
40°
25%
5 PM
39°
35%
6 PM
38°
35%
7 PM
38°
36%
8 PM
37°
37%
7-Day Forecast
Tonight
38° 26°
Clear.
Fri
40° 26°
Clear with a 41% chance of rain.
Sat
38° 26°
Mostly Clear with a 75% chance of rain.
Sun
33° 23°
Partly Cloudy with a 82% chance of rain.
Mon
31° 22°
Heavy Rain, 90% chance.
Tue
31° 22°
Drizzle, 51% chance.
Wed
30° 21°
Rain, 28% chance.
TimeTempConditionsPrecipWindHumidity
Now 33° Clear 11% 6 mph SW 48%
10 PM 33° Clear 21% 6 mph SW 51%
11 PM 32° Clear 21% 6 mph WSW 53%
12 AM 32° Clear 21% 6 mph WSW 56%
1 AM 31° Clear 21% 5 mph WSW 58%
2 AM 30° Clear 3% 4 mph W 60%
3 AM 29° Clear 3% 3 mph WNW 62%
4 AM 28° Clear 3% 4 mph NW 66%
5 AM 26° Clear 3% 4 mph NW 70%
6 AM 27° Clear 3% 4 mph WNW 68%
7 AM 29° Clear 3% 4 mph WNW 65%
8 AM 31° Clear 3% 5 mph NW 58%
9 AM 32° Clear 3% 5 mph NW 52%
10 AM 33° Clear 3% 6 mph WNW 47%
11 AM 35° Clear 3% 6 mph WNW 42%
12 PM 36° Clear 3% 8 mph W 39%
1 PM 38° Clear 3% 9 mph W 36%
2 PM 38° Clear 11% 10 mph W 35%
3 PM 38° Clear 24% 10 mph W 34%
4 PM 40° Clear 25% 10 mph W 34%
5 PM 39° Clear 35% 10 mph W 35%
6 PM 38° Clear 35% 9 mph W 39%
7 PM 38° Clear 36% 8 mph W 42%
8 PM 37° Clear 37% 9 mph W 46%
15-Day Forecast
Today
7/2
Clear
11%
26°
38°
Fri
7/3
Clear
41%
26°
40°
Sat
7/4
Mostly Clear
75%
26°
38°
Sun
7/5
Partly Cloudy
82%
23°
33°
Mon
7/6
Heavy Rain
90%
22°
31°
Tue
7/7
Drizzle
51%
22°
31°
Wed
7/8
Rain
28%
21°
30°
Thu
7/9
Clear
17%
21°
32°
Fri
7/10
Rain
69%
21°
33°
Sat
7/11
Drizzle
44%
23°
33°
Sun
7/12
Drizzle
60%
22°
36°
Mon
7/13
Drizzle
60%
22°
36°
Tue
7/14
Drizzle
60%
22°
32°
Wed
7/15
Drizzle
60%
21°
32°
Thu
7/16
Drizzle
60%
22°
32°
93
Moderate
U.S. Air Quality Index · Dominant: O3
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
67 AQI 17.5 µg/m³
O3
Ground-level ozone
Dominant
93 AQI 68 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 93 Moderate 93 67
Sat 64 Moderate 64 62
Sun 71 Moderate 71 58
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 Thu Jul 2, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2380 J/kg
MLCAPE2438 J/kg
MUCAPE2854 J/kg
SBCIN-238 J/kg
MLCIN0 J/kg
Lifted Index-5.8
Kinematics
0–6 km Shear20 kt
0–1 km Shear13 kt
Eff. Shear15 kt
0–1 km SRH30
0–3 km SRH2
Eff. SRH2
Storm Motion262° @ 24 kt
0–1 km EHI0.4
Composite Parameters
Sig. Tornado0.1
STP (eff)0.0
Supercell0.0
K-Index25.6
Thermo & Levels
PWAT1.68 in
0–3 km LR6.4 °C/km
700–500 LR6.8 °C/km
Total Totals50.1
LCL865 hPa
LFC704 hPa
EL149 hPa
Freezing Lvl15,446 ft