When is pollen worst in Y-O Ranch?

Y-O Ranch 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 Y-O Ranch right now?

Right now grass pollen leads in Y-O Ranch at a High (4/5) level. The species actually in the air today: Pine and Grasses. On a quiet live day, Y-O Ranch's seasonal calendar fills in what's typically airborne this time of year.

Is tree or grass pollen higher in Y-O Ranch in spring?

In spring, tree pollen leads in Y-O Ranch — 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 Y-O Ranch's pollen season distinctive?

Y-O Ranch 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 Y-O Ranch?

Through Y-O Ranch'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.

Y-O Ranch, Wyoming Pollen Count

Y-O Ranch pollen count and allergy forecast — tree, grass, and ragweed seasons and what’s pollinating now

Y-O Ranch, WY · Pollen count right now

Grass pollen is High in Y-O Ranch today

Tree: Very Low 1/5Grass: High 4/5Tomorrow: High

Today’s pollen by type

TreeVery Low1/5
GrassHigh4/5
Weed / RagweedOut of season

Active now: Pine, Grasses.

Y-O Ranch 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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Flonase Allergy Relief Nasal Spray (Fluticasone)
A steroid nasal spray that targets congestion and post-nasal drip an oral pill alone often misses. Most effective used daily through peak season.
View on Amazon →
Levoit Core 300 HEPA Air Purifier
A true-HEPA purifier captures airborne pollen indoors. Run it in the bedroom on high during peak season — the air you breathe 8 hours a night matters most.
View on Amazon →
Mission Allergy Allergen-Barrier Pillow & Mattress Encasements
Tightly-woven encasements block pollen and dust-mite allergens tracked into bed on hair and clothing — a low-effort, high-leverage environmental control.
View on Amazon →
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 →

Weather Story is a participant in the Amazon Associates program. As an Amazon Associate we earn from qualifying purchases — at no extra cost to you. Product picks are editorial; the links above are affiliate links.

How Y-O Ranch’s pollen count works

The calendar above is tuned to Y-O Ranch’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 Y-O Ranch right now.

Right now grass pollen leads in Y-O Ranch at a High (4/5) level. The species actually in the air today: Pine 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 Y-O Ranch?: Y-O Ranch 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 Y-O Ranch right now?: Right now grass pollen leads in Y-O Ranch at a High (4/5) level. The species actually in the air today: Pine and Grasses. On a quiet live day, Y-O Ranch's seasonal calendar fills in what's typically airborne this time of year.
Is tree or grass pollen higher in Y-O Ranch in spring?: In spring, tree pollen leads in Y-O Ranch — 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 Y-O Ranch's pollen season distinctive?: Y-O Ranch 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 Y-O Ranch?: Through Y-O Ranch'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 Y-O Ranch

See the full Y-O Ranch, WY weather forecast — hour-by-hour outlook, NOAA radar, satellite, and air quality.