High Pollen in Longmont, CO

About pollen in Longmont

Weed pollen is driving the day in Longmont, with levels running high enough to cause real irritation for anyone sensitive to it. Trees are quiet right now, so the discomfort people feel outdoors is almost certainly tied to weeds rather than anything blowing off the region's cottonwoods, elms, or pines. If you tend to react to ragweed or similar plants, today calls for a bit more caution than usual, especially during outdoor activity in the afternoon. Looking ahead, weed pollen is expected to stay elevated through the next several days, even ticking up slightly before easing back a touch. This lines up with the season, as mid-to-late summer is peak time for ragweed and other weedy plants across the Front Range, while tree pollen remains a non-issue until next spring. Anyone with weed allergies should expect conditions to stay on the more irritating side through the week.

What to do today

• Avoid mowing the lawn and raking leaves.
• When driving the car, close your windows and turn the air conditioning system to recirculation mode.
• Keep your windows closed and turn on your air purifier or air conditioning.
• Consider staying indoors during the peak pollen hours (morning and early afternoon).

Common questions

What is the pollen count in Longmont, CO today?

Longmont, CO is at a high 4 out of 5 on the Universal Pollen Index today, driven mainly by weed pollen. Over the next five days it ranges from 4 to 5 of 5.

Is weed pollen high in Longmont, CO right now?

Weed pollen is high today at 4 of 5, and it's in season now. Many allergy sufferers will have symptoms.

What plants are causing allergies in Longmont, CO?

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