The highest pollen count over the past decade is 9,369, which was recorded on March 20, 2012. The daily pollen count, which is released about 7 a.m., is the total number of grains of pollen per cubic meter over the previous 24-hour period. Trees like oak, pine, sycamore, willow and sweet gum sent lots of the yellow stuff in the air after days of dry weather and high temperatures. The high range for tree pollen begins at 90, and the National Allergy Bureau considers counts more than 1,500 to be extremely high. People sensitive to tree pollens are urged to take precautions if they need to be outdoors for long periods of time because they will experience symptoms at this level.
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