Low Pollen in San Marcos, CA

About pollen in San Marcos

Pollen levels in San Marcos are quiet today, with weeds standing out as the most active source, though even that is only in the low range. Grass is present but barely so, and tree pollen is absent altogether. Most people, including those with sensitivities, should find the air easy to tolerate. Looking ahead, this pattern is expected to hold steady over the next several days, with weed pollen staying low and grass remaining a minor factor. Tree pollen should continue to stay out of the picture, which fits the season, since local trees like oak, sycamore, and eucalyptus typically release their pollen in spring rather than fall. The mild weed presence lines up with this time of year, as late-season plants such as ragweed and sagebrush are typically the main contributors through autumn.

What to do today

• It's a good day for outdoor activities since pollen levels are low.
• Do you know which plants cause your pollen allergy? Check out the pollen data to be prepared.

Common questions

What is the pollen count in San Marcos, CA today?

San Marcos, CA is at a low 2 out of 5 on the Universal Pollen Index today, driven mainly by weed pollen. The five-day outlook holds steady around 2 of 5.

Is weed pollen high in San Marcos, CA right now?

Weed pollen is low today at 2 of 5, and it's in season now. Most people won't have symptoms.

What plants are causing allergies in San Marcos, CA?

The main sources right now are Grasses and Ragweed. Elm (Ulmaceae (the Elm family), Two distinct seasons, late winter to early spring, and late summer to fall (species dependent)) is actively pollinating.