The ragweed count for any given day is available in your local newspaper’s weather section, advises the American College of Allergy, Asthma & Immunology. You can also find the pollen forecast online by visiting a weather website and entering a ZIP code. A final option is to look up a city's website. Some cities, such as the city of Albuquerque, New Mexico, measure local pollen counts and post them on their websites.
Ragweed grows throughout the United States but is particularly prevalent in the East and Midwest. Its blooms release pollen from mid-summer through the fall. Ragweed pollen counts are highest in mid-September and may remain at high levels later than expected due to global warming causing a longer growing season, explains the Florida Center for Allergy & Asthma Care.
The total pollen counts as shown in your local newspaper or online reflect the total amount of pollen in the air. These counts may include pollen from ragweed, sagebrush, tumbleweed and varieties of trees, according to the Asthma and Allergy Foundation of America. Trees likely to contribute to the pollen count are cedar, cottonwood, birch and oak. Because total pollen counts include ragweed counts, a high total pollen count does not necessarily irritate a ragweed allergy.