Excessive Heat Warning issued by Bucks County starting at 10:00AM on Tuesday, June 18, and staying in effect until the evening of Saturday, June 22.  Heat related illnesses increase significantly during extreme heat and high humidity events. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Bucks County provides daytime cooling centers for seniors and the homeless seeking refuge from the heat (see link for more information).