Grass Pollen Count in Atascadero, CA

Last updated Friday, November 6, 2026

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

Pollen by type in Atascadero

What is the grass pollen count in Atascadero today?

The Atascadero grass pollen index today is 1 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Atascadero’s overall pollen count today is 20 (Low) across all types. See the full Atascadero pollen count for the overall index and every type together.

Atascadero is a city in San Luis Obispo County, California. Its population is 29,735 (ACS 2023).

Atascadero Grass Pollen Count: 5-Day Forecast

DayOverall indexCategory
Friday, November 620Low
Saturday, November 719Low
Sunday, November 819Low
Monday, November 919Low
Tuesday, November 1018Low

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 Atascadero’s overall trend across the week. Today’s grass pollen reading is the headline above.

Species driving Atascadero’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 Atascadero is 1 (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 California pattern, the plants that typically shape this city’s year are winter and spring trees, late-spring grasses and late-summer weeds.

The California allergy season guide singles out planted olive and the Central Valley’s concentrated spring pollen.

Plants affecting Atascadero now — grass pollen

Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for Atascadero. The type summary stands: grass pollen reads 1 (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 grass pollen level means

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

Enjoy outdoor activities.

Grasses peak in spring in the Central Valley and run longer and milder on the coast. This month sits outside the usual grass pollen window for the California pattern, so today’s grass 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.

Atascadero allergies today

Atascadero allergies today are set by the same reading as the Atascadero pollen count today: the Total Pollen Index is 20 (Low), and the grass pollen index on this page is 1 (Low) of it. When people ask about Atascadero allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Atascadero.

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

Atascadero tree pollen count

Atascadero ragweed pollen count

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

See Atascadero on the pollen map

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

California allergy season guide

Grass pollen season

Find an allergist in Atascadero, 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).