making the most of outdoor fun it can last into september and october the air when you turn your heat on for the first time in the fall check pollen levels if pollen levels are high in your outdoor activity wear protective clothing wear long sunglasses to keep pollen off your skin and out of you're doing fall yard work like raking or mowing - which can stir up pollen protective face mask remove pollen wash pollens off your skin and your hair as soon as possible after spending time shoes before entering the house clean your heating vents and change the filter before turning heat mold and other allergens can get trapped in the vents over the summer