Washington Post Heat Tracker – “Extreme heat kills more people in the United States than any other weather hazard, and the risk of longer and more frequent heat waves is only expected to increase as climate change worsens. The Post is tracking the potential for dangerous heat this summer using the heat index, which accounts for the combined impact of temperature and humidity — the higher the humidity, the more difficult it is for the body to cool itself off through sweating. Heat disorders such as heat stroke, heat cramps and heat exhaustion are possible with any extended exposure to a heat index at or above 90 degrees…”