Pollen Forecast for East Portland, Oregon
Today
The pollen levels for Thursday will be greater than today's levels in the moderate range. This higher level is caused in part by rising temperatures. If you have these allergies, tomorrow will likely be more difficult outdoors.
Outlook
Concentration of pollen grains in the air for Friday will be falling into the extremely low range. The cause for the falling pollen levels is rising humidity, weak winds and expected precipitation in the morning, afternoon and evening which tends to wash pollen out of the air.