Grass Pollen Count in Mountain Mesa, CA

Last updated Friday, November 6, 2026

This page shows the most recent reading available for Mountain Mesa — from Friday, November 6, 2026 (1 day ago) — not today's reading.

Pollen by type in Mountain Mesa

What is the grass pollen count in Mountain Mesa today?

The Mountain Mesa grass pollen index today is 0.6 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Mountain Mesa’s overall pollen count today is 18 (Low) across all types. See the full Mountain Mesa pollen count for the overall index and every type together.

Mountain Mesa Grass Pollen Count: 5-Day Forecast

DayOverall indexCategory
Friday, November 618Low
Saturday, November 718Low
Sunday, November 817Low
Monday, November 917Low
Tuesday, November 1017Low

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 Mountain Mesa’s overall trend across the week. Today’s grass pollen reading is the headline above.

Species driving Mountain Mesa’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 Mountain Mesa is 0.6 (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 Mountain Mesa now — grass pollen

Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for Mountain Mesa. The type summary stands: grass pollen reads 0.6 (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.

Mountain Mesa allergies today

Mountain Mesa allergies today are set by the same reading as the Mountain Mesa pollen count today: the Total Pollen Index is 18 (Low), and the grass pollen index on this page is 0.6 (Low) of it. When people ask about Mountain Mesa allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Mountain Mesa.

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

Mountain Mesa tree pollen count

Mountain Mesa ragweed pollen count

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

See Mountain Mesa on the pollen map

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

California allergy season guide

Grass pollen season

Find an allergist in Mountain Mesa, 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).