Philadelphia is preparing for a significant heat wave expected to bring record-breaking temperatures next week. Following a pleasant weekend with temperatures slightly above average, the city is bracing for a surge in heat, with forecasts predicting temperatures in the 80s°F and potentially reaching the 90s°F by mid-week. The week is expected to be mostly dry, with a slight chance of isolated showers. Lower humidity, coupled with high temperatures, may result in increased static electricity and an elevated fire risk, particularly in areas north and west of the city.