When is pollen worst in Ukiah?

Ukiah runs the classic three-wave calendar: tree pollen Mar–May, grass May–Jul, then ragweed Aug–Oct. The two worst stretches are the spring tree peak and the late-summer ragweed peak. Currently, grass pollen is what's driving counts this month.

What's in the air in Ukiah right now?

Right now grass pollen leads in Ukiah at a Moderate (3/5) level. The species actually in the air today: Pine, Oak, and Grasses. On a quiet live day, Ukiah's seasonal calendar fills in what's typically airborne this time of year.

Is tree or grass pollen higher in Ukiah in spring?

In spring, tree pollen leads in Ukiah — trees pollinate Mar–May, ahead of grass (May–Jul). The handoff is the tail of the tree window: tree counts taper as grass climbs, so an early-spring flare is more likely tree pollen and a late-spring one more likely grass.

What makes Ukiah's pollen season distinctive?

Ukiah sits in the high-elevation Mountain West zone, which means short, sharp seasons set late by elevation, with sagebrush adding to the late-summer weed load. That shapes when symptoms hit and which allergen to watch.

How do I reduce pollen exposure in Ukiah?

Through Ukiah's peak windows (tree Mar–May, grass May–Jul, ragweed Aug–Oct), keep windows shut and run AC on recirculate; counts run highest on dry, warm, windy mornings, so push outdoor activity to late afternoon or just after rain, which clears pollen from the air. A HEPA purifier indoors, a saline rinse after being outside, showering before bed, and starting antihistamines a week or two before your worst local window all measurably cut symptoms.

What pollen index counts as high?

Pollen is reported on a categorical scale — None, Low, Moderate, High, and Very High. "High" and above means most allergy sufferers notice symptoms even with brief outdoor exposure, and sensitized people should limit time outside and pre-medicate. "Low" to "Moderate" usually only affects highly sensitive individuals.

Ukiah, Oregon Pollen Count

Ukiah pollen count and allergy forecast — tree, grass, and ragweed seasons and what’s pollinating now

Ukiah, OR · Pollen count right now

Grass pollen is Moderate in Ukiah today

Tree: Low 2/5Grass: Moderate 3/5Tomorrow: Moderate

Today’s pollen by type

TreeLow2/5
GrassModerate3/5
Weed / RagweedOut of season

Active now: Pine, Oak, Grasses.

Ukiah pollen calendar

Typical peak months for each pollen type in this climate region. The highlighted column is the current month.

JFMAMJJASOND

TreeMar–May

GrassMay–Jul

WeedAug–Oct

Allergy relief

Zyrtec 24-Hour Allergy Relief (Cetirizine 10 mg)
A once-daily, non-drowsy oral antihistamine. Start it a couple of weeks before your worst pollen season for the best symptom control.
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NeilMed Sinus Rinse Kit (Saline Nasal Irrigation)
A saline rinse physically flushes pollen out of the nasal passages. Use it after time outdoors during peak season to cut the allergen load before symptoms build.
View on Amazon →

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How Ukiah’s pollen count works

The calendar above is tuned to Ukiah’s high-elevation Mountain West climate, not a national average: tree pollen peaks Mar–May, grass May–Jul, and ragweed Aug–Oct here. Those windows are why grass pollen is the one in season in Ukiah right now.

Right now grass pollen leads in Ukiah at a Moderate (3/5) level. The species actually in the air today: Pine, Oak, and Grasses. Counts run highest on warm, dry, windy mornings and drop after rain, which washes pollen out of the air — reported on the None / Low / Moderate / High / Very High scale.

Frequently asked

When is pollen worst in Ukiah?: Ukiah runs the classic three-wave calendar: tree pollen Mar–May, grass May–Jul, then ragweed Aug–Oct. The two worst stretches are the spring tree peak and the late-summer ragweed peak. Currently, grass pollen is what's driving counts this month.
What's in the air in Ukiah right now?: Right now grass pollen leads in Ukiah at a Moderate (3/5) level. The species actually in the air today: Pine, Oak, and Grasses. On a quiet live day, Ukiah's seasonal calendar fills in what's typically airborne this time of year.
Is tree or grass pollen higher in Ukiah in spring?: In spring, tree pollen leads in Ukiah — trees pollinate Mar–May, ahead of grass (May–Jul). The handoff is the tail of the tree window: tree counts taper as grass climbs, so an early-spring flare is more likely tree pollen and a late-spring one more likely grass.
What makes Ukiah's pollen season distinctive?: Ukiah sits in the high-elevation Mountain West zone, which means short, sharp seasons set late by elevation, with sagebrush adding to the late-summer weed load. That shapes when symptoms hit and which allergen to watch.
How do I reduce pollen exposure in Ukiah?: Through Ukiah's peak windows (tree Mar–May, grass May–Jul, ragweed Aug–Oct), keep windows shut and run AC on recirculate; counts run highest on dry, warm, windy mornings, so push outdoor activity to late afternoon or just after rain, which clears pollen from the air. A HEPA purifier indoors, a saline rinse after being outside, showering before bed, and starting antihistamines a week or two before your worst local window all measurably cut symptoms.
What pollen index counts as high?: Pollen is reported on a categorical scale — None, Low, Moderate, High, and Very High. "High" and above means most allergy sufferers notice symptoms even with brief outdoor exposure, and sensitized people should limit time outside and pre-medicate. "Low" to "Moderate" usually only affects highly sensitive individuals.

More for Ukiah

See the full Ukiah, OR weather forecast — hour-by-hour outlook, NOAA radar, satellite, and air quality.