Pollen Alerts For Petersburg, IN

Pollen Index: 8.2 Pollen Level: medium-high Predominant Pollen: Grass and Nettle. Concentration of pollen grains in the air for Thursday will be falling in the moderate range. This decrease is due to falling temperatures, rising humidity, and heavy rains in the morning which tend to wash pollen out of the air. That's good news for allergy sufferers.