Grass Pollen Count in Hilo, HI

Pollen by type in Hilo

• Hilo tree pollen count
• Hilo ragweed pollen count
• Hilo pollen count

What is the grass pollen count in Hilo today?

The Hilo grass pollen index today is 8 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Hilo’s overall pollen count today is 9 (Low) across all types. See the full Hilo pollen count for the overall index and every type together.

Hilo is a census-designated place in Hawaii County, Hawaii. Its population is 48,223 (ACS 2023).

Hilo Grass Pollen Count: 5-Day Forecast

Pollen Atlas models the daily detail as an overall index: day-by-day splits by individual pollen type are not part of the modelled data, so this table shows Hilo’s overall trend across the week. Today’s grass pollen reading is the headline above.

Species driving Hilo’s grass pollen

The modelled data reports grass as one combined index — there is no species-by-species split for grass anywhere in the data, so this page does not invent one. Today’s modelled grass index for Hilo is 8 (Low), and the 5-day overall trend above shows the shape of the week.

As regional context only — not as today’s readings — in the Hawaii pattern, the plants that typically shape this city’s year are grasses that pollinate in nearly every month and kiawe flowering most heavily in late winter and spring, with mold in the wet season.

The Hawaii allergy season guide singles out kiawe, flowering most heavily in late winter and spring, and grasses that pollinate in nearly every month.

Plants affecting Hilo now — grass pollen

Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for Hilo. The type summary stands: grass pollen reads 8 (Low) today.

In the Hawaii pattern, the plants that typically shape this city’s year are grasses that pollinate in nearly every month and kiawe flowering most heavily in late winter and spring, with mold in the wet season — named here as regional context only, not as today’s readings.

Plant detail returns here automatically on any day the feed includes it.

What this grass pollen level means

Low risk. Keep windows open; consider allergy meds only if sensitive.

Enjoy outdoor activities.

Grasses pollinate in nearly every month, with the strongest run from spring into summer and a peak from March through August. This month sits inside the grass pollen window for the Hawaii pattern, so today’s grass pollen reading should be judged against that chapter of the Hawaii year. The Hawaii allergy season guide singles out kiawe, flowering most heavily in late winter and spring, and grasses that pollinate in nearly every month.

Hilo allergies today

Hilo allergies today are set by the same reading as the Hilo pollen count today: the Total Pollen Index is 9 (Low), and the grass pollen index on this page is 8 (Low) of it. When people ask about Hilo allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Hilo.

Allergies in Hilo follow the Hawaii calendar set out on the full Hilo page — the chapters, the plants behind them, and the 5-day forecast show whether today is typical for the season or an exception to it. If you are checking allergies today in Hilo before heading outdoors, the grass pollen split on this page is the part to read: it shows whether this pollen type is doing the work today, not just how high the total sits.

Read the five-day overall trend above as the Hilo allergy forecast for the grass pollen season: it shows whether Hilo allergies are set to ease or build across the week, day by day — the days to plan outdoor time around are the ones where the overall index steps down, not just today.