Philadelphia woke up Tuesday, July 14, 2026, to a soupy 72°F, and the air is only getting heavier from here. Temperatures are expected to rocket into the mid to upper 90s this afternoon, with an even hotter, more punishing stretch lined up for Wednesday, July 15, 2026.
Today stays sunny and hot, with a high near 94°F and southwest winds around 5 to 10 mph. Overnight, the heat barely lets up, with lows only dipping into the mid 70s. The National Weather Service in Mount Holly has issued an Extreme Heat Warning for Wednesday, July 15, 2026, from 10 a.m. to 8 p.m., when highs near 100°F and heat index values near 106°F are expected. According to the NWS Mount Holly, those conditions can make prolonged outdoor exertion dangerous.
Heat Safety And Cooling Options
Heat like this significantly raises the risk of heat exhaustion and heat stroke, especially for older adults, young children, people with chronic illnesses, and anyone working outside. The city maintains a network of cooling centers and emergency resources for residents who need a place to cool down. Anyone without air conditioning can call 211 or check the city’s cooling centers page for locations and hours at City of Philadelphia.
To lower your risk, shift strenuous chores and workouts to early morning or evening, drink water regularly even if you are not thirsty, and never leave children or pets in a parked car for any amount of time.
Weekend Outlook And Storm Risk
A mostly dry front may slide through late Wednesday into Thursday, bringing only spotty storms. After that, the pattern looks more unsettled heading into the weekend. Both Saturday and Sunday show increasing chances for showers and thunderstorms, and some of those storms could produce heavy rain and localized flash flooding, a threat forecasters are watching in the National Weather Service forecast discussion. If you have outdoor plans, keep an eye on hourly updates and be ready to move events indoors if storms start to fire.
If you have to be outside in the heat, plan activities for early morning or evening, take frequent breaks in the shade or in air conditioned spaces, and watch for signs of heat illness in yourself and others. Check the National Weather Service and the city’s cooling centers page for updated advisories, and call 911 for any medical emergency related to the heat.
