Tree Pollen Count in Sunnyvale, CA

Pollen by type in Sunnyvale

• Sunnyvale grass pollen count
• Sunnyvale ragweed pollen count
• Sunnyvale pollen count

What is the tree pollen count in Sunnyvale today?

The Sunnyvale tree pollen index today is 29 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

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

Sunnyvale is a city in Santa Clara County, California. Its population is 153,455 (ACS 2023).

Sunnyvale Tree Pollen Count: 5-Day Forecast

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

Species driving Sunnyvale’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 29 (Low) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.

Plants affecting Sunnyvale now — tree pollen

Detailed plant-by-plant readings for the tree pollen category were not returned in today’s source data for Sunnyvale. The type summary stands: tree pollen reads 29 (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.

Sunnyvale allergies today

Sunnyvale allergies today are set by the same reading as the Sunnyvale pollen count today: the Total Pollen Index is 26 (Low), and the tree pollen index on this page is 29 (Low) of it. When people ask about Sunnyvale allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Sunnyvale.

Allergies in Sunnyvale follow the California calendar set out on the full Sunnyvale 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 Sunnyvale 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 Sunnyvale allergy forecast for the tree pollen season: it shows whether Sunnyvale 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.