Tree Pollen Count in Sebastopol, CA

Last updated Friday, November 6, 2026

This page shows the most recent reading available for Sebastopol — from Friday, November 6, 2026 (1 day ago) — not today's reading.

Pollen by type in Sebastopol

What is the tree pollen count in Sebastopol today?

The Sebastopol tree pollen index today is 23 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Sebastopol’s overall pollen count today is 21 (Low) across all types. See the full Sebastopol pollen count for the overall index and every type together.

Sebastopol Tree Pollen Count: 5-Day Forecast

DayOverall indexCategory
Friday, November 621Low
Saturday, November 720Low
Sunday, November 820Low
Monday, November 920Low
Tuesday, November 1020Low

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 Sebastopol’s overall trend across the week. Today’s tree pollen reading is the headline above.

Species driving Sebastopol’s tree pollen

Species-level counts are not part of the modelled data Pollen Atlas publishes — the modelled index is reported per pollen type, not per species — so this section gives the type summary: tree pollen reads 23 (Low) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.

Plants affecting Sebastopol now — tree pollen

Detailed plant-by-plant readings for the tree pollen category were not returned in today’s source data for Sebastopol. The type summary stands: tree pollen reads 23 (Low) today.

In the California pattern, the plants that typically shape this city’s year are winter and spring trees, late-spring grasses and late-summer weeds — 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 tree pollen level means

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

Enjoy outdoor activities.

Trees build through spring, with planted olive peaking from March into May. This month sits outside the usual tree pollen window for the California pattern, so today’s tree pollen reading is the modelled value outranking the calendar — this page reports the modelled reading first. The California allergy season guide singles out planted olive and the Central Valley’s concentrated spring pollen.

Sebastopol allergies today

Sebastopol allergies today are set by the same reading as the Sebastopol pollen count today: the Total Pollen Index is 21 (Low), and the tree pollen index on this page is 23 (Low) of it. When people ask about Sebastopol allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Sebastopol.

Allergies in Sebastopol follow the California calendar set out on the full Sebastopol 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 Sebastopol before heading outdoors, the tree 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 Sebastopol allergy forecast for the tree pollen season: it shows whether Sebastopol 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.

See the full Sebastopol pollen count — all types, the overall index and today’s ranking context

Sebastopol grass pollen count

Sebastopol ragweed pollen count

See how Sebastopol ranks in today's pollen count rankings — the worst cities for allergies today

See Sebastopol on the pollen map

Every pollen type, with photos and seasons: the pollen directory

California allergy season guide

Tree pollen season

Find an allergist in Sebastopol, CA

Pollen indexes: a modelled pollen risk index computed by Pollen Atlas from open weather, vegetation and phenology data, calibrated against CDC/NAB season data. Plant detail: Google Pollen API. Index values are modelled, not measured counts. Sources: CDC/NAB; USA-NPN; GBIF (CC BY); ESA WorldCover (CC BY 4.0).