![](https://denverite.com/cdn-cgi/image/width=3840,quality=75,format=auto/https://wp-denverite.s3.amazonaws.com/wp-content/uploads/sites/4/2016/06/160602-STAPLETON-KEVINJBEATY-22.jpg)
Air quality on the Front Range is not looking great for Wednesday.
The alert is in effect until at least 4 p.m., but the state already is advising people to reduce their "prolonged or heavy" outdoor exertion this afternoon through about 9 p.m.
People with lung diseases are at particular risk.