Check today's pollen count by city in Hawaii. Explore local allergy forecasts, monitor common seasonal allergens, and use city-level trends to plan around high pollen days.
Allergy Ava organizes statewide and local pollen information so you can compare conditions, anticipate seasonal flare-ups, and find relevant allergy forecast pages faster.
Today's pollen count in Hawaii
Pollen levels in Hawaii can vary by city, weather, vegetation, and season. Choose a local forecast below to see the current allergy index, main allergen, and 5-day outlook for cities including Urban Honolulu, East Honolulu, Hilo, Pearl City, Waipahu.
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Preparing today's Hawaii pollen dashboard
About Pollen in Hawaii
Hawaii allergy sufferers can use this page to monitor pollen trends and find relevant city forecasts when available. Pollen levels vary by season, with tree pollen often peaking in spring, grass pollen becoming more active in late spring and summer, and weed pollen, especially ragweed, remaining a concern in late summer and fall.
Use Allergy Ava's city-level forecasts to plan outdoor activities, manage medication timing, and stay informed about the allergens most prevalent in your area. Our data is updated regularly to give you the most accurate picture of current conditions.
Frequently asked questions about Hawaii pollen forecasts
Is there an allergy off-season in Hawaii?
Not a dependable one. Warm temperatures allow grasses and other plants to remain active throughout the year, while mold and indoor allergens can persist during humid weather.
Are allergies usually worse in Hilo or Honolulu?
It depends on the trigger. Hilo’s frequent rain and humidity can favor mold, while drier Honolulu neighborhoods may experience more airborne grass pollen and dust. Daily conditions are more useful than a single island-wide ranking.
Do Hawaii’s trade winds clear pollen from the air?
Trade winds can disperse stagnant air, but they can also transport pollen between neighborhoods. Mountains, valleys, and differences in local rainfall make the effect vary across each island.
Is vog included in a Hawaii pollen forecast?
No. Vog is air pollution produced by volcanic emissions rather than pollen, although it can irritate the eyes and respiratory system and resemble or worsen allergy symptoms. Check air-quality and vog reports separately when emissions are elevated.
Today's statewide signal
Hawaii pollen has no true off-season
Hawaii’s warm climate supports active grasses and vegetation throughout the year, while trade winds, elevation, and sharp windward-leeward rainfall differences shape local exposure. Compare five forecasts across Oʻahu and Hawaiʻi Island for today’s pollen, wind, humidity, and rain conditions.
Data updates regularly to reflect current conditions across Hawaii cities.
Highest city index now
Urban Honolulu
Oak · High
4
Average pollen index
4
Average humidity
57%
Average wind
7 mph
Live city comparison
Today's pollen and weather by city
Sort Hawaii cities by pollen index, temperature, or trend. Select a city for its full local forecast.
Dense landscaping, tropical grasses, urban heat, and trade-wind exposure create highly local pollen patterns from central Honolulu to the drier neighborhoods of southeast Oʻahu.
Bermuda grassJohnson grassTree pollenOutdoor mold
Index
4
Humidity
57%
Wind
8
Central and leeward Oʻahu
Lawns, disturbed land, suburban vegetation, and generally drier leeward weather can favor airborne grass and weed pollen around Pearl City and Waipahu.
Bermuda grassWeed pollenTree pollenOutdoor mold
Index
4
Humidity
50%
Wind
5
Windward Hawaiʻi Island
Frequent trade-wind rainfall keeps Hilo lush and humid. Pollen remains possible year-round, but mold and moisture-related exposure can become especially important during prolonged wet weather.
Grass pollenTree pollenWeed pollenOutdoor mold
Index
4
Humidity
73%
Wind
8
State-specific pollen calendar
When major allergens are active in Hawaii
Tropical grasses
Possible year-round
JanFebMarAprMayJunJulAugSepOctNovDec
Bermuda, Johnson, and other grasses can release pollen during much of the year because warm coastal areas do not experience a winter freeze.
Tree bloom pulses
Often February to May
FebMarAprMay
Introduced shade, fruit, and ornamental trees bloom on different schedules, creating neighborhood-level pollen increases rather than one uniform statewide peak.
Drier-season pollen
May to October
MayJunJulAugSepOct
Dry ground and steady wind can increase airborne grass, weed, and dust exposure in leeward communities.
Rain-linked mold
Wet and humid periods
OctNovDecJanFebMar
Mold can remain active throughout the year, particularly around rainy windward areas such as Hilo and after extended wet weather on Oʻahu.
Weather-pollen correlation
What weather means for today's allergy risk
Wind can disperse pollen, rain can temporarily wash particles down, and humidity can increase mold irritation. The city table combines pollen and weather signals so users can compare outdoor risk without opening every city page.