Grass Pollen Count in Williston, TN

Last updated Friday, November 6, 2026

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

Pollen by type in Williston

What is the grass pollen count in Williston today?

The Williston grass pollen index today is 3 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

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

Williston Grass Pollen Count: 5-Day Forecast

DayOverall indexCategory
Friday, November 618Low
Saturday, November 718Low
Sunday, November 817Low
Monday, November 916Low
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 Williston’s overall trend across the week. Today’s grass pollen reading is the headline above.

Species driving Williston’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 Williston is 3 (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 Southeast pattern, the plants that typically shape this city’s year are spring trees, warm-season grasses and late-summer ragweed.

The Tennessee allergy season guide singles out a heavy ragweed fall, with river-valley mold sustained between the pollen waves.

Plants affecting Williston now — grass pollen

Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for Williston. The type summary stands: grass pollen reads 3 (Low) today.

In the Southeast pattern, the plants that typically shape this city’s year are spring trees, warm-season grasses and late-summer ragweed — 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 follow in May and run through the summer. This month sits outside the usual grass pollen window for the Southeast pattern, so today’s grass pollen reading is the modelled value outranking the calendar — this page reports the modelled reading first. The Tennessee allergy season guide singles out a heavy ragweed fall, with river-valley mold sustained between the pollen waves.

Williston allergies today

Williston allergies today are set by the same reading as the Williston pollen count today: the Total Pollen Index is 18 (Low), and the grass pollen index on this page is 3 (Low) of it. When people ask about Williston allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Williston.

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

Williston tree pollen count

Williston ragweed pollen count

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

See Williston on the pollen map

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

Tennessee allergy season guide

Grass pollen season

Find an allergist in Williston, TN

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).