Ragweed Pollen Count in Santa Rosa, AZ — Today

Updated Saturday, November 7, 2026

Pollen by type in Santa Rosa

What is the ragweed pollen count in Santa Rosa today?

The Santa Rosa ragweed pollen index today is 24 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Ragweed pollen is the dominant allergen in Santa Rosa today. See the full Santa Rosa pollen count for the overall index and every type together.

Santa Rosa Ragweed Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 721Low
Sunday, November 821Low
Monday, November 921Low
Tuesday, November 1021Low
Wednesday, November 1121Low

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 Santa Rosa’s overall trend across the week. Today’s ragweed pollen reading is the headline above.

Species driving Santa Rosa’s ragweed 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: ragweed pollen reads 24 (Low) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.

How to read this: the “ragweed” figure on this site is the modelled weed pollen index — the weed group (ragweed + mugwort) — printed under the ragweed name the rankings use.

Plants affecting Santa Rosa now — ragweed pollen

Detailed plant-by-plant readings for the ragweed pollen category were not returned in today’s source data for Santa Rosa. The type summary stands: ragweed pollen reads 24 (Low) today.

In the Desert Southwest pattern, the plants that typically shape this city’s year are irrigated landscape trees and grasses, with wind-carried weeds in open ground — 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 ragweed pollen level means

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

Enjoy outdoor activities.

A final weed wave follows the monsoon rains into fall, with monsoon mold in the same weeks. This month sits inside the ragweed pollen window for the Desert Southwest pattern, so today’s ragweed pollen reading should be judged against that chapter of the Arizona year. The Arizona allergy season guide singles out mulberry, ash and olive — planted trees, not wild desert flora.

Santa Rosa allergies today

Santa Rosa allergies today are set by the same reading as the Santa Rosa pollen count today: the Total Pollen Index is 21 (Low), and the ragweed pollen index on this page is 24 (Low) of it. When people ask about Santa Rosa allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Santa Rosa.

Allergies in Santa Rosa follow the Arizona calendar set out on the full Santa Rosa 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 Santa Rosa before heading outdoors, the ragweed 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 Santa Rosa allergy forecast for the ragweed pollen season: it shows whether Santa Rosa 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 Santa Rosa pollen count — all types, the overall index and today’s ranking context

Santa Rosa tree pollen count

Santa Rosa grass pollen count

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

See Santa Rosa on the pollen map

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

Arizona allergy season guide

Ragweed season

Find an allergist in Santa Rosa, AZ

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).