Weather Alerts For Foggy Bottom, Washington, D.C.

Pollen Index: 8.9 Pollen Level: medium-high Predominant Pollen: Ragweed, Chenopods and Nettle. The quantity of pollen grains in the air for Friday will be falling but will remain in the high range. Since the weather has a major influence on pollen dispersal, this decrease is due in part to falling temperatures, rising humidity, and expected precipitation in the evening which tends to wash pollen out of the air.