Grass Pollen Count in Vallejo, CA

Pollen by type in Vallejo

• Vallejo tree pollen count
• Vallejo ragweed pollen count
• Vallejo pollen count

What is the grass pollen count in Vallejo today?

The Vallejo grass pollen index today is 2 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Vallejo’s overall pollen count today is 21 (Low) across all types. See the full Vallejo pollen count for the overall index and every type together.

Vallejo is a city in Solano County, California. Its population is 124,637 (ACS 2023).

Vallejo Grass 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 Vallejo’s overall trend across the week. Today’s grass pollen reading is the headline above.

Species driving Vallejo’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 Vallejo is 2 (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 Vallejo now — grass pollen

Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for Vallejo. The type summary stands: grass pollen reads 2 (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.

Vallejo allergies today

Vallejo allergies today are set by the same reading as the Vallejo pollen count today: the Total Pollen Index is 21 (Low), and the grass pollen index on this page is 2 (Low) of it. When people ask about Vallejo allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Vallejo.

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