Tree Pollen Count in Sierra City, CA — Today

Updated Saturday, November 7, 2026

Pollen by type in Sierra City

What is the tree pollen count in Sierra City today?

The Sierra City tree pollen index today is 9 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Tree pollen is the dominant allergen in Sierra City today. See the full Sierra City pollen count for the overall index and every type together.

Sierra City Tree Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 77Low
Sunday, November 86Low
Monday, November 96Low
Tuesday, November 106Low
Wednesday, November 116Low

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

Species driving Sierra City’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 9 (Low) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.

Plants affecting Sierra City now — tree pollen

Detailed plant-by-plant readings for the tree pollen category were not returned in today’s source data for Sierra City. The type summary stands: tree pollen reads 9 (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.

Sierra City allergies today

Sierra City allergies today are set by the same reading as the Sierra City pollen count today: the Total Pollen Index is 7 (Low), and the tree pollen index on this page is 9 (Low) of it. When people ask about Sierra City allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Sierra City.

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

Sierra City grass pollen count

Sierra City ragweed pollen count

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

See Sierra City 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 Sierra City, 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).