Pollen Alerts For Hilltop, AZ

Pollen Index: 10.4 Pollen Level: high Predominant Pollen: Cedar/Juniper, Poplar/Aspen/Cottonwood and Elm. The pollen levels for Sunday will be falling but will remain in the high range. The cause for the falling pollen levels is falling temperatures, rising humidity, and expected precipitation in the evening which tends to wash pollen out of the air.