POLLEN IN THE AIR
AMOUNT OF POLLEN IN THE AIR
Because ragweed is a local problem, use the following information to help determine what ragweed levels can be found in your area.
1. Weather conditions - Dry, windy, sunny weather is the ultimate conditions for pollen dispersal whereas rainy weather will scrub pollen from the air.
2. Time of Year - In general, ragweed pollen dispersal in Pennsylvania peaks the last week of August and the first week of September.
3. Geographic Location - Ragweed grows best in disturbed soils. Based on the percentage of farmland in each county, the map below suggests where ragweed may be the most concentrated.
4. Time of Day - Ragweed pollen release peaks in the morning hours between 5 and 10 o'clock.