Utah Air Monitoring Program
Utah, Salt Lake Clearing Index
*The Clearing Index is an Air Quality/Smoke Dispersal Index used to regulate open burning and as input for other air quality decisions throughout Utah. The Clearing Index is defined as the Mixing Depth (depth of the mixed layer in 100s of feet above ground level) multiplied by the Transport Wind (average wind in the mixed layer in knots). Clearing Index values below 500 are considered poor ventilation and open burning is restricted under these conditions. Any Clearing Index values above 1000 are considered excellent ventilation and are referred to as 1000+.
Clearing Index Data Archive
Yearly clearing index summary for Salt Lake,Utah Air Monitoring Center archives daily Clearing Index into yearly summary reports.
Current Clearing Index Report
A daily Clearing Index Report published by National Weather Service, Salt Lake Office. The National Weather Service has a new clearing index that forecasts for 16 air-sheds.
*Source from: National Weather Service, Salt Lake Office.