Hawaii, United States

Hilo, HI Pollen Count Today

View the current allergy index, primary allergen, tree, grass, and weed pollen levels, plus the 5-day pollen forecast for Hilo.

Today's pollen count in Hilo

Today in Hilo, Hawaii, the forecasted pollen level is high with an allergy index of 4. The primary allergen is Birch. Use the forecast below to see whether conditions are likely to rise, ease, or stay steady over the next few days.

AllergyAva shows forecasted pollen levels and allergy risk estimates for Hilo. Actual exposure can vary by neighborhood, weather, and time outdoors.

Current level
High
Allergy index
4
Main allergen
Birch

Pollen Level

High Risk
4

Pollen Index

Primary Allergen

Birch

Limit outdoor exposure. Take allergy medication and monitor symptoms closely.

75°

Temp

72%

Humidity

14

Wind mph

Source: Includes pollen data from Google

Updated June 27, 2026 at 3:57 PM ET.

Check pollen in another city or ZIP code

5-Day Pollen Forecast

Best day this week

Wed - Low

Worst day this week

Mon - Very High

Today
67°/47°
3
Moderate
Tree2
Grass3
Weed0
Tomorrow
70°/48°
3
Moderate
Tree3
Grass2
Weed0
Mon
95°/54°
5
Very High
Tree3
Grass4
Weed0
Tue
74°/54°
4
High
Tree3
Grass3
Weed0
Wed
84°/60°
2
Low
Tree3
Grass4
Weed0
None
Very Low
Low
Moderate
High
Very High

Allergen Breakdown

Birch
High
Oak
Moderate
Grass
Moderate
Maple
Very Low
Cedar
Very Low

Pollen & Allergy Guide for Hilo, HI

Hilo, Hawaii residents can experience significant pollen exposure throughout the year. Tree pollen typically peaks during spring months, while grass pollen dominates in summer. Fall brings elevated ragweed levels, which is one of the most common allergens in the region.

When Is Allergy Season in Hilo?

Allergy season in Hilo generally begins in early spring as trees start releasing pollen. The most intense period varies by allergen type. Monitoring daily pollen counts with Allergy Ava helps you plan ahead and manage symptoms proactively.

Tips for Managing Allergies in Hilo

Track your daily pollen exposure, consult with a local allergist for personalized treatment, and consider starting preventive medications 2-4 weeks before your peak allergy season. Indoor air quality management with HEPA filters can also make a significant difference.

Hilo allergy season calendar

Tree pollen

In season now

Spring

Often drives early-season symptoms

Grass pollen

In season now

Late spring to summer

Can rise around lawns, parks, and open areas

Ragweed/weed pollen

Late summer to fall

Major fall allergy trigger

Mold spores

Varies

Often affected by moisture and decaying leaves

Common pollen triggers around Hilo

TriggerTypical seasonWhat to know
Tree pollenSpringOften drives early-season symptoms
Grass pollenLate spring to summerCan rise around lawns, parks, and open areas
Ragweed/weed pollenLate summer to fallMajor fall allergy trigger
Mold sporesVariesOften affected by moisture and decaying leaves

Hilo pollen forecast on Hawaiʻi Island’s windward side

Hilo allergy conditions are shaped by lush tropical vegetation, frequent moisture, and year-round plant growth that can create a different pollen profile than drier parts of the islands. People searching for a Hilo pollen forecast often want local detail before work, school, or outdoor activity on the Big Island.

Tree pollen, grasses, and weeds can all affect Hilo residents depending on local blooms and weather conditions. Daily pollen tracking helps users better understand changes in allergen exposure.

Frequently asked questions about pollen in Hilo

What is the pollen count in Hilo today?

Today in Hilo, Hawaii, the pollen level is high with an allergy index of 4. The main allergen to watch is Birch.

When is allergy season in Hilo, Hawaii?

Allergy season in Hilo, Hawaii can vary by allergen and weather conditions. Tree pollen often rises in spring, grass pollen becomes more active in late spring and summer, and weed pollen can remain elevated later in the year depending on local climate and vegetation.

How often should I check the pollen forecast in Hilo?

If you have seasonal allergies in Hilo, it is helpful to check the pollen forecast daily during peak allergy periods. Shifts in wind, rainfall, temperature, and humidity can all change local pollen exposure from one day to the next.

What pollen types affect people in Hilo, Hawaii?

Hilo residents may be affected by tree pollen, grass pollen, and weed pollen during different parts of the year. The strongest trigger depends on the season, nearby vegetation, and current weather conditions.