Hazy conditions and smoke are expected to return to the skies today and over the weekend, as an air quality advisory has been issued by the state health department.

Most of the West Slope has been placed under a smoke advisory, which includes recommendations for those with breathing problems to stay indoors. A massive amount of smoke from fires in California is expected to travel into western Colorado on Friday and Saturday.

According to the advisory, if visibility outdoors is less than five miles...