When you check the weather on your phone, you're getting a "best guess" based on the nearest airport—but your actual neighborhood could be much hotter. And in high-risk communities, this invisible temperature spike or major air quality issue transforms a daily forecast into a serious medical emergency. In this special episode in honor of Brown’s first-ever Climate Week, environmental epidemiologist Allan Just explains how his team uses NASA satellite data to measure hyper-local temperatures and air pollution. Discover why these precise measurements are vital for public health, especially for those on common medications that can unexpectedly increase vulnerability to extreme heat.