Tree Pollen Count in South San Jose Hills, CA — Today

Updated Saturday, November 7, 2026

Pollen by type in South San Jose Hills

What is the tree pollen count in South San Jose Hills today?

The South San Jose Hills tree pollen index today is 21 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

South San Jose Hills’s overall pollen count today is 24 (Low) across all types. See the full South San Jose Hills pollen count for the overall index and every type together.

South San Jose Hills is a census-designated place in Los Angeles County, California. Its population is 17,451 (ACS 2023).

South San Jose Hills Tree Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 724Low
Sunday, November 821Low
Monday, November 921Low
Tuesday, November 1023Low
Wednesday, November 1120Low

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 South San Jose Hills’s overall trend across the week. Today’s tree pollen reading is the headline above.

Species driving South San Jose Hills’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 21 (Low) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.

Plants affecting South San Jose Hills now — tree pollen

Detailed plant-by-plant readings for the tree pollen category were not returned in today’s source data for South San Jose Hills. The type summary stands: tree pollen reads 21 (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.

South San Jose Hills allergies today

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

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

South San Jose Hills grass pollen count

South San Jose Hills ragweed pollen count

See how South San Jose Hills ranks in today's pollen count rankings — the worst cities for allergies today

See South San Jose Hills 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 South San Jose Hills, 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).