Nearly 100-degree temperatures are expected across the metro area Tuesday as heat advisories and air quality alerts continue, according to the National Weather Service. Denver will see sunny, hot weather and a high of 99 degrees Tuesday, according to NWS forecasters. RELATED: How to stay cool during extreme heat: Tips for preventing heat-related illness On average at this time of year, temperatures in the city hover around 87 degrees, but the heat is still six degrees away from beating Denver’s hottest June 25 ever, according to NWS data.