Ragweed Pollen Count in Northborough, MA — Today

Updated Saturday, November 7, 2026

Pollen by type in Northborough

What is the ragweed pollen count in Northborough today?

The Northborough ragweed pollen index today is 9 (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 Northborough today. See the full Northborough pollen count for the overall index and every type together.

Northborough Ragweed Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 77Low
Sunday, November 818Low
Monday, November 918Low
Tuesday, November 1018Low
Wednesday, November 1118Low

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

Species driving Northborough’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 9 (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 Northborough now — ragweed pollen

Detailed plant-by-plant readings for the ragweed pollen category were not returned in today’s source data for Northborough. The type summary stands: ragweed pollen reads 9 (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 Massachusetts allergy season guide singles out birch, opening the spring in April, and oak carrying the peak through May.

Northborough allergies today

Northborough allergies today are set by the same reading as the Northborough pollen count today: the Total Pollen Index is 7 (Low), and the ragweed pollen index on this page is 9 (Low) of it. When people ask about Northborough allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Northborough.

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

Northborough tree pollen count

Northborough grass pollen count

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

See Northborough on the pollen map

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

Massachusetts allergy season guide

Ragweed season

Find an allergist in Northborough, MA

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).