Ragweed Pollen Count in Milpitas, CA — Today

Updated Saturday, November 7, 2026

Pollen by type in Milpitas

What is the ragweed pollen count in Milpitas today?

The Milpitas ragweed pollen index today is 28 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Ragweed pollen is the dominant allergen in Milpitas today. See the full Milpitas pollen count for the overall index and every type together.

Milpitas is a city in Santa Clara County, California. Its population is 78,216 (ACS 2023).

Milpitas Ragweed Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 725Low
Sunday, November 825Low
Monday, November 924Low
Tuesday, November 1022Low
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 Milpitas’s overall trend across the week. Today’s ragweed pollen reading is the headline above.

Species driving Milpitas’s ragweed 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: ragweed pollen reads 28 (Low) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.

How to read this: the “ragweed” figure on this site is the modelled weed pollen index — the weed group (ragweed + mugwort) — printed under the ragweed name the rankings use.

Plants affecting Milpitas now — ragweed pollen

Detailed plant-by-plant readings for the ragweed pollen category were not returned in today’s source data for Milpitas. The type summary stands: ragweed pollen reads 28 (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 ragweed pollen level means

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

Enjoy outdoor activities.

Weeds follow in late summer and fall, stronger after wet winters. This month sits outside the usual ragweed pollen window for the California pattern, so today’s ragweed 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.

Milpitas allergies today

Milpitas allergies today are set by the same reading as the Milpitas pollen count today: the Total Pollen Index is 25 (Low), and the ragweed pollen index on this page is 28 (Low) of it. When people ask about Milpitas allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Milpitas.

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

Milpitas tree pollen count

Milpitas grass pollen count

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

See Milpitas on the pollen map

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

California allergy season guide

Ragweed season

Find an allergist in Milpitas, 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).