Tree Pollen Count in Monte Rio, CA

Last updated Friday, November 6, 2026

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

Pollen by type in Monte Rio

What is the tree pollen count in Monte Rio today?

The Monte Rio tree pollen index today is 18 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Monte Rio’s overall pollen count today is 16 (Low) across all types. See the full Monte Rio pollen count for the overall index and every type together.

Monte Rio Tree Pollen Count: 5-Day Forecast

DayOverall indexCategory
Friday, November 616Low
Saturday, November 715Low
Sunday, November 814Low
Monday, November 914Low
Tuesday, November 1014Low

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

Species driving Monte Rio’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 18 (Low) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.

Plants affecting Monte Rio now — tree pollen

Detailed plant-by-plant readings for the tree pollen category were not returned in today’s source data for Monte Rio. The type summary stands: tree pollen reads 18 (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.

Monte Rio allergies today

Monte Rio allergies today are set by the same reading as the Monte Rio pollen count today: the Total Pollen Index is 16 (Low), and the tree pollen index on this page is 18 (Low) of it. When people ask about Monte Rio allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Monte Rio.

Allergies in Monte Rio follow the California calendar set out on the full Monte Rio 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 Monte Rio 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 Monte Rio allergy forecast for the tree pollen season: it shows whether Monte Rio 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 Monte Rio pollen count — all types, the overall index and today’s ranking context

Monte Rio grass pollen count

Monte Rio ragweed pollen count

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

See Monte Rio 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 Monte Rio, 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).