Denver weather: Tuesday could be last day of heavy smoke, poor air quality

An end to the poor air quality in Denver is on the horizon. The air quality alert for Denver and the northern Front Range due to Canadian wildfire smoke is set to expire at 4 p.m. Tuesday, and thunderstorms in the forecast could spell the end of the smoke in the area. The smoke Tuesday will be lighter than Monday, so temperatures in the area will increase to a high of 78 degrees. The mountain areas are expected to receive more scattered showers and thunderstorms in the afternoon and evening,...