Ragweed Pollen Count in Forsyth, MT

Last updated Friday, November 6, 2026

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

Pollen by type in Forsyth

What is the ragweed pollen count in Forsyth today?

The Forsyth ragweed pollen index today is 26 (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 Forsyth today. See the full Forsyth pollen count for the overall index and every type together.

Forsyth Ragweed Pollen Count: 5-Day Forecast

DayOverall indexCategory
Friday, November 620Low
Saturday, November 720Low
Sunday, November 819Low
Monday, November 919Low
Tuesday, November 1019Low

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 Forsyth’s overall trend across the week. Today’s ragweed pollen reading is the headline above.

Species driving Forsyth’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 26 (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 Forsyth now — ragweed pollen

Detailed plant-by-plant readings for the ragweed pollen category were not returned in today’s source data for Forsyth. The type summary stands: ragweed pollen reads 26 (Low) today.

In the Northern Rockies pattern, the plants that typically shape this city’s year are river-corridor trees, a June grass crest of timothy, orchard grass, bluegrass and ryegrass, and a late sagebrush finish — 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.

Ragweed, sagebrush, wormwood and pigweed run from August until the first hard frost, typically in October. This month sits outside the usual ragweed pollen window for the Northern Rockies pattern, so today’s ragweed pollen reading is the modelled value outranking the calendar — this page reports the modelled reading first. The Montana allergy season guide singles out sagebrush, flowering late on the dry benches, over a grass summer of timothy, orchard grass, bluegrass and ryegrass.

Forsyth allergies today

Forsyth allergies today are set by the same reading as the Forsyth pollen count today: the Total Pollen Index is 20 (Low), and the ragweed pollen index on this page is 26 (Low) of it. When people ask about Forsyth allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Forsyth.

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

Forsyth tree pollen count

Forsyth grass pollen count

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

See Forsyth on the pollen map

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

Montana allergy season guide

Ragweed season

Find an allergist in Forsyth, MT

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).