Accurate mold and pollen counts for your local area are available from the National Allergy Bureau's website. The NAB compiles its data from certified stations throughout the United States. It is the only mold and pollen count network with certification from the American Academy of Allergy, Asthma and Immunology, according to the organization's website. You can create an NAB account to receive email alerts regarding pollen and mold counts in your local area.
Pollen and mold counts report the amount of these allergens present in the air at a given time, explains the American Academy of Allergy, Asthma and Immunology. The pollen and mold count is the measure of real-time conditions, while pollen and mold forecasts rely on past data and general information about the weather. Although weather can affect the actual amount of pollen in the air at a given time, different types of plants spread their pollen at fairly predictable times. Typically, tree pollen is present in the air in the early spring, grass pollen is an issue in the late spring to early summer, and weed pollen is present from the late summer through the fall. Likewise, outdoor mold spores begin to increase with the rise in temperature in the spring, reaching their peak during July in warmer states and during October in cooler states.