Different plants pollinate at different times of the year. During the late summer and through the fall, weeds tend to be the most prominent plants producing pollens. This would include weeds that people frequently talk about such as ragweed. In the Intermountain West, we do have ragweed and this is a problem for a lot of people. However many individuals tend to have trouble when exposed to pollen from sagebrush and tumbleweed as well as other local weeds. There is also exposure to grass pollen in the late summer and fall. Because these pollens are very light, they can be carried a long way by the wind. Because of this you don’t have to be near the plants to develop allergy symptoms.
One other class of allergens that can be problematic this time of year is mold, specifically outdoor molds such as Alternaria. All the molds don’t produce pollens, but they do produce spores to which people can be very allergic and which are also carried by the wind.
If you are having trouble with allergies or asthma symptoms, or think you might be, you don’t have to suffer. There are very effective treatments that can bring these conditions under control for most people. If you have questions please speak with your doctor or see an allergist.