Pollen in Merced, CA

About pollen in Merced

Late July in Merced typically favors weeds and grasses over tree pollen, since most flowering trees finished their pollen release months ago. This is the time of year when grass pollen is winding down while weeds such as pigweed and lamb's quarters, along with early signs of ragweed, begin to take over. For those sensitive to these types, outdoor irritation is more likely to come from weeds than from trees at this point in the season. Looking ahead, expect this pattern to hold or intensify slightly as summer progresses into late August and September, when ragweed and other weed pollens tend to peak in the Central Valley. Tree pollen from species common to the area, like oak, elm, and olive, is unlikely to be a factor again until next spring. If you notice increased sneezing or congestion outdoors in the coming days, weeds are the most probable cause given the time of year.

Common questions

What is the pollen count in Merced, CA today?

Merced, CA has no notable tree, grass, or weed pollen today.