Moderate Pollen in Norwalk, CT

Moderate today, mostly weed pollen.

Last updated August 15, 2026

Today's index3out of 5Moderate
TreeVery Lowin season
WeedModerateoff-season

Driving it today

Elm

Forecast

Sun
3
Mon
1
Tue
3
Wed
3

About pollen in Norwalk

Weed pollen is the main story in Norwalk today, sitting at a moderate level that sensitive individuals will likely notice. Tree pollen, by contrast, is barely a factor right now, so anyone bothered by trees should get some relief. Overall, expect a fairly typical mid-August day where ragweed and other late-summer weeds are doing most of the work. Looking ahead, weed pollen should hold in the moderate range over the next several days, with tree pollen staying low throughout. This pattern fits the season well: oak, maple, and birch pollen finished their heavy release back in spring, and grass pollen has mostly wound down from its late-spring and early-summer peak. Now, as late summer moves toward fall, ragweed and similar weeds take over as the dominant source, so it is worth keeping that in mind if you tend to react to this time of year.

What to do today

  • It's important to shower and wash your hair after spending a lot of time outdoors.
  • When spending time outside, use sunglasses and a cap to keep pollen out of your face and eyes.
  • Wash clothes worn outdoors to remove any remnants of pollen grains.
  • If possible, wear glasses instead of contact lenses.
  • Did you hang any laundry outside? Now is a good time to hang clothes indoors or use a dryer if possible.

Common questions

What is the pollen count in Norwalk, CT today?
Norwalk, CT is at a moderate 3 out of 5 on the Universal Pollen Index today, driven mainly by weed pollen. Over the next five days it ranges from 1 to 3 of 5.
Is weed pollen high in Norwalk, CT right now?
Weed pollen is moderate today at 3 of 5, and it's past its peak season. Sensitive people may notice symptoms.
What plants are causing allergies in Norwalk, CT?
The main sources right now are Elm. Elm (Ulmaceae (the Elm family), Two distinct seasons, late winter to early spring, and late summer to fall (species dependent)) is actively pollinating.