The state Department of Energy and Environmental Protection is forecasting moderate air quality today with some smoke and haze back in the region.  The agency in charge of issuing air quality alerts warned that smoke from massive wildfires burning in the western United States and Canada prompted an air quality action day for all of Litchfield, and northern Fairfield counties among other places in the state yesterday.  The alert means fine particles from the wildfire smoke may approach or exceed unhealthy standards.  In Litchfield County, emergency responders received complaints of haze and an odor of smoke.  The entire state was under an air quality alert last week because of smoke from the western fires.