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By Thursday, we should see another burst of pollen across the region. Maples and elm join the mix this week as Bradford pears pass their peak. Pollen counts will surge with warm dry weather.
A pollen count is a measurement of the number of pollen grains in a given volume of air. Pollen counts, and forecasts of pollen conditions, are routinely produced and reported to the public because high aerial pollen concentration is associated with increased rates of allergic reaction for those with conditions such as hay fever and asthma .
Weed pollen is a late-season pollen that notoriously affects Americans before cold winter weather settles back into the north and the sun dips below a certain angle in the south.
Pollen counts actually take samples from the air while pollen forecasts are just predictions based on weather and historical data, TODAY.com reported previously.
The combination of summer grass pollen and the confining shape of the hills around Eugene make it "the area of the highest grass pollen counts in the USA (>1,500 pollen grains/m 3 of air)." [ 67 ] These high pollen counts have led to difficulties for some track athletes who compete in Eugene.
Pollen counts have been on the rise in Indianapolis this week and this weekend we'll see the highest total of the year.
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