Low Pollen in Sioux City, IA
Low today, mostly weed pollen.
Last updated August 15, 2026
Driving it today
Forecast
About pollen in Sioux City
Weed pollen is the main story in Sioux City today, though it remains at a low level overall. Tree pollen is barely registering, so anyone sensitive to that is unlikely to notice much. Overall, this is a fairly easy day for most allergy sufferers, with only mild irritation possible for those who react strongly to weeds. Looking ahead, weed pollen is expected to inch up over the next several days, moving into the moderate range and likely staying there through much of the stretch, which lines up with the season—ragweed and other late-summer weeds tend to become more active as August progresses. Tree pollen should stay low throughout, consistent with this time of year, since area trees like oak, elm, and cottonwood have long finished their spring release. If you're prone to weed-related symptoms, it may be worth keeping an eye on conditions as the week continues.
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 Sioux City, IA today?
- Sioux City, IA is at a low 2 out of 5 on the Universal Pollen Index today, driven mainly by weed pollen. Over the next five days it ranges from 2 to 3 of 5.
- Is weed pollen high in Sioux City, IA right now?
- Weed pollen is low today at 2 of 5, and it's past its peak season. Most people won't have symptoms.
- What plants are causing allergies in Sioux City, IA?
- 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.