Pollen Alerts For Foster, RI

Pollen Index: 8.9 Pollen Level: medium-high Predominant Pollen: Ragweed, Grass and Nettle. The quantity of pollen grains in the air for Thursday will be falling but will remain in the high range. This lower level is caused by falling temperatures, rising humidity, and expected precipitation in the afternoon which tends to wash pollen out of the air.