Denver has two notable weather features. These are wind and cold. These web sites give you insight on the local weather and will help you plan your day so that you are out and about when it is warm and sunny.
Ozone Aware (www.ozoneaware.org) - review Let's take care of Colorado's summer air.
Regional Air Quality Council (www.raqc.org) Information on air pollution and environmental protection in Denver.
Nationl Weather Office (www.weather.gov) The National Weather Office in Boulder reports weather conditions for the Front Range.