Grass Pollen Count in Chelsea, MA — Today

Pollen by type in Chelsea

• Chelsea tree pollen count
• Chelsea ragweed pollen count
• Chelsea pollen count

What is the grass pollen count in Chelsea today?

The Chelsea 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.

Chelsea’s overall pollen count today is 9 (Low) across all types. See the full Chelsea pollen count for the overall index and every type together.

Chelsea is a city in Suffolk County, Massachusetts. Its population is 39,460 (ACS 2023).

Chelsea Grass 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 Chelsea’s overall trend across the week. Today’s grass pollen reading is the headline above.

Species driving Chelsea’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 Chelsea 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 Northeast pattern, the plants that typically shape this city’s year are spring trees, late-spring grasses and late-summer ragweed.

The Massachusetts allergy season guide singles out birch, opening the spring in April, and oak carrying the peak through May.

Plants affecting Chelsea now — grass pollen

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

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

Enjoy outdoor activities.

Grasses hold from late May into July. This month sits outside the usual grass pollen window for the Northeast pattern, so today’s grass 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.

Chelsea allergies today

Chelsea allergies today are set by the same reading as the Chelsea pollen count today: the Total Pollen Index is 9 (Low), and the grass pollen index on this page is 0.6 (Low) of it. When people ask about Chelsea allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Chelsea.

Allergies in Chelsea follow the Massachusetts calendar set out on the full Chelsea 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 Chelsea 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 Chelsea allergy forecast for the grass pollen season: it shows whether Chelsea 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.