Calculated AQI values are the most recent hourly averages updated every 15 minutes. The data are provisional and have not been evaluated for accuracy. NCAA guidelines related to the interpretation of AQI are available from: https://www.ncaa.org/sport-science-institute/air-quality.

For technical questions about the data please contact atmos-mesowest[at]lists.utah.edu.

Access to the provisional data are provided by Synoptic Data PBC from equipment operated by the Utah Division of Air Quality.