Grass Pollen Count in Greenwich, CT — Today

Pollen by type in Greenwich

• Greenwich tree pollen count
• Greenwich ragweed pollen count
• Greenwich pollen count

What is the grass pollen count in Greenwich today?

The Greenwich grass pollen index today is 1 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Greenwich’s overall pollen count today is 12 (Low) across all types. See the full Greenwich pollen count for the overall index and every type together.

Greenwich is a census-designated place in Western Connecticut Planning Region, Connecticut. Its population is 14,528 (ACS 2023).

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

Species driving Greenwich’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 Greenwich is 1 (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 Connecticut allergy season guide singles out oak, the spring heavyweight peaking in May, with birch alongside.

Plants affecting Greenwich now — grass pollen

Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for Greenwich. The type summary stands: grass pollen reads 1 (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 Connecticut allergy season guide singles out oak, the spring heavyweight peaking in May, with birch alongside.

Greenwich allergies today

Greenwich allergies today are set by the same reading as the Greenwich pollen count today: the Total Pollen Index is 12 (Low), and the grass pollen index on this page is 1 (Low) of it. When people ask about Greenwich allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Greenwich.

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