Grass Pollen Count in East Palo Alto, CA — Today

Updated Saturday, November 7, 2026

Pollen by type in East Palo Alto

What is the grass pollen count in East Palo Alto today?

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

Modelled pollen risk index — not a measured count.

East Palo Alto’s overall pollen count today is 26 (Low) across all types. See the full East Palo Alto pollen count for the overall index and every type together.

East Palo Alto is a city in San Mateo County, California. Its population is 29,143 (ACS 2023).

East Palo Alto Grass Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 726Low
Sunday, November 825Low
Monday, November 925Low
Tuesday, November 1025Low
Wednesday, November 1122Low

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 East Palo Alto’s overall trend across the week. Today’s grass pollen reading is the headline above.

Species driving East Palo Alto’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 East Palo Alto 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 East Palo Alto now — grass pollen

Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for East Palo Alto. 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.

East Palo Alto allergies today

East Palo Alto allergies today are set by the same reading as the East Palo Alto pollen count today: the Total Pollen Index is 26 (Low), and the grass pollen index on this page is 1 (Low) of it. When people ask about East Palo Alto allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for East Palo Alto.

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

East Palo Alto tree pollen count

East Palo Alto ragweed pollen count

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

See East Palo Alto 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 East Palo Alto, 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).