Pollen Forecast for Mercer Island, Washington

Concentration of pollen grains in the air for Saturday will be unchanged in the extremely low range. Due to the extremely low levels of pollen, the outlook for allergy sufferers remains favorable.

Concentration of pollen grains in the air for Sunday will be unchanged in the extremely low range. Published Multidata research shows the possibility of trace or low levels of pollen being carried from distant regions even during this period of a lack of local pollen production.