Southern Arizona has two allergy seasons in a year.
One in the spring and one at the end of the monsoon, around from late August into September.
The late year pollen spike is from all the weeds and grasses that popped up from the monsoon downpours.
While generally not as severe as the spring allergy season, many people still notice the difference with more sniffling and sneezing as well as other sinus and health issues that come with allergies.
Once October arrives, this second pollen season winds down and allergy sufferers will get a break until the spring of next year.
Below is the University of Arizona's Tucson Urban Pollen Calendar showing the types of pollens common throughout the year.
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