Very Low Pollen in Vacaville, CA

Very low today, mostly grass pollen.

Last updated September 30, 2026

Today's index1out of 5Very Low
GrassVery Lowoff-season
WeedVery Lowin season

Driving it today

Ragweed

Forecast

Thu
1
Fri
1
Sat
1
Sun
1

About pollen in Vacaville

Pollen levels around Vacaville are quiet today, with both grass and weed sources registering very low. Sensitive individuals are unlikely to notice much irritation, and for most residents, outdoor plans should be largely unaffected by airborne pollen. Looking ahead, the next several days should bring more of the same, with grass and weed levels holding steady at low levels through the coming week. This tracks with the season, as oak, ash, and other regional trees are well past their spring peak, grasses have wound down from early summer, and weeds like ragweed—typically more active in late summer and early fall—appear to be tapering off as well. Overall, this is a calm stretch for allergy sufferers in the area.

What to do today

  • Pollen levels are very low right now. It's a great day to enjoy the outdoors!

Common questions

What is the pollen count in Vacaville, CA today?
Vacaville, CA is at a very low 1 out of 5 on the Universal Pollen Index today, driven mainly by grass pollen. The five-day outlook holds steady around 1 of 5.
Is grass pollen high in Vacaville, CA right now?
Grass pollen is very low today at 1 of 5, and it's past its peak season. Most people won't notice it.
What plants are causing allergies in Vacaville, CA?
The main sources right now are Ragweed. Ragweed (Asteraceae (the daisy family), Late summer, fall) is actively pollinating.