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Frequently Asked Questions About Pollen Forecasting And Sampling for Allergy Alerts

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I checked the pollen forecast on your website for numerous communities around me, and the forecast levels are all the same. Don't you issue forecasts for each zipcode? If so, why are the numbers the same?

Actual pollen counts and our resulting forecasts can be used to represent wide geographic expanses, sometimes up to many miles. It is extremely rare to find multiple pollen counting stations throughout an entire metro area. Pollen counting is a time-consuming and costly commitment. Typically, if there is a pollen counting station in a city, it is used to represent the entire metro area. We make sure that we have adequate, reasonable, coverage of the metro areas throughout the United States for our pollen and weather sources.

Allergy Alert's pollen forecasts are based on pollen count information, both current and historical. We combine the information we have from all reporting stations for your area that is current (which can mean as old as a week, or as new as today, depending on how often the stations report their data), as well as historical data. We then use our forecasting models to determine how weather may affect those levels.

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