Weather for Philadelphia, Pennsylvania
Current Weather
Five Day Weather Forecast
Wed
H: 90°F
L: 69°F
Thu
H: 60°F
L: 54°F
Fri
H: 59°F
L: 50°F
Sat
H: 52°F
L: 49°F
Sun
H: 53°F
L: 50°F
Air Quality
Nitrogen Dioxide: 7.15 μg/m3
Sulphur Dioxide: 1.95 μg/m3
Ozone: 96 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 8:14 PM
Daylight: 14 hrs 33 mins
Moon Transit: 5:03 PM
Moonset: 12:58 AM
Moon Phase: Waxing Crescent
Moon Illumination: 14.4%
Best Times for Fishing or Hunting
Major Periods
6:06 AM - 8:36 AM4:33 PM - 7:03 PM
Minor Periods
8:43 AM - 10:13 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Heat Advisory issued May 20 at 3:27AM EDT until May 20 at 8:00PM EDT by NWS Mount Holly NJ
Effective: Wed May 20, 2026, 3:27 AM
Expires: Wed May 20, 2026, 4:30 PM
* WHAT...Heat index values up to 97 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 100 degrees during peak heating this afternoon. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later this afternoon and evening which will end this early season heat.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Heat Advisory issued May 20 at 3:27AM EDT until May 20 at 8:00PM EDT by NWS Mount Holly NJ
Effective: Wed May 20, 2026, 3:27 AM
Expires: Wed May 20, 2026, 4:30 PM
* WHAT...Heat index values up to 93 degrees expected. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 95 degrees during peak heating this afternoon. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive this afternoon and evening which will end this early season heat.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Heat Advisory issued May 20 at 3:27AM EDT until May 20 at 8:00PM EDT by NWS Mount Holly NJ
Effective: Wed May 20, 2026, 3:27 AM
Expires: Wed May 20, 2026, 4:30 PM
* WHAT...Heat index values up to 98 degrees expected. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 100 degrees during peak heating this afternoon. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later this afternoon and evening which will end this early season heat.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Weather Forecast
Air Quality
Nitrogen Dioxide: 10.48 μg/m3
Sulphur Dioxide: 2.36 μg/m3
Ozone: 97.72 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 8:14 PM
Daylight: 14 hrs 33 mins
Moon Transit: 5:03 PM
Moonset: 12:58 AM
Moon Phase: Waxing Crescent
Moon Illumination: 14.4%
Best Times for Fishing or Hunting
Major Periods
6:06 AM - 8:36 AM4:33 PM - 7:03 PM
Minor Periods
8:43 AM - 10:13 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 13.2 μg/m3
Sulphur Dioxide: 2.51 μg/m3
Ozone: 54.96 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 8:15 PM
Daylight: 14 hrs 34 mins
Moon Transit: 6:00 PM
Moonset: 12:42 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.2%
Best Times for Fishing or Hunting
Major Periods
7:05 AM - 9:35 AM5:30 PM - 8:00 PM
Minor Periods
10:00 AM - 11:30 AM12:12 AM - 1:42 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 29.27 μg/m3
Sulphur Dioxide: 2.8 μg/m3
Ozone: 44.28 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 8:16 PM
Daylight: 14 hrs 36 mins
Moon Transit: 6:50 PM
Moonset: 1:16 AM
Moon Phase: Waxing Crescent
Moon Illumination: 33.4%
Best Times for Fishing or Hunting
Major Periods
7:58 AM - 10:28 AM6:20 PM - 8:50 PM
Minor Periods
11:13 AM - 12:43 AM12:46 AM - 2:16 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 9.26 μg/m3
Sulphur Dioxide: 1.53 μg/m3
Ozone: 73.85 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 8:16 PM
Daylight: 14 hrs 38 mins
Moon Transit: 7:36 PM
Moonset: 1:44 AM
Moon Phase: First Quarter
Moon Illumination: 44.4%
Best Times for Fishing or Hunting
Major Periods
8:46 AM - 11:16 AM7:06 PM - 9:36 PM
Minor Periods
12:23 AM - 1:53 PM1:14 AM - 2:44 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 8:17 PM
Daylight: 14 hrs 39 mins
Moon Transit: 8:20 PM
Moonset: 2:08 AM
Moon Phase: First Quarter
Moon Illumination: 55.7%
Best Times for Fishing or Hunting
Major Periods
9:31 AM - 12:01 AM7:50 PM - 10:20 PM
Minor Periods
1:29 PM - 2:59 PM1:38 AM - 3:08 AM
Action Rating: 3 out of 5