Ragweed Pollen Count in Collegeville, PA — Today

Pollen by type in Collegeville

• Collegeville tree pollen count
• Collegeville grass pollen count
• Collegeville pollen count

What is the ragweed pollen count in Collegeville today?

The Collegeville 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 Collegeville today. See the full Collegeville pollen count for the overall index and every type together.

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

Species driving Collegeville’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 Collegeville now — ragweed pollen

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

In the Northeast pattern, the plants that typically shape this city’s year are spring trees, late-spring 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 ragweed pollen level means

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

Enjoy outdoor activities.

Ragweed builds from mid-August, peaks in September, and is ended by the first hard frost. This month sits outside the usual ragweed pollen window for the Northeast pattern, so today’s ragweed pollen reading is the modelled value outranking the calendar — this page reports the modelled reading first. The Pennsylvania allergy season guide singles out oak, peaking in late April and May, with maple sharing the spring stage.

Collegeville allergies today

Collegeville allergies today are set by the same reading as the Collegeville 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 Collegeville allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Collegeville.

Allergies in Collegeville follow the Pennsylvania calendar set out on the full Collegeville 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 Collegeville 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 Collegeville allergy forecast for the ragweed pollen season: it shows whether Collegeville 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.