Ragweed Pollen Count in Northwest Harwinton, CT — Today
Updated Saturday, November 7, 2026
Pollen by type in Northwest Harwinton
What is the ragweed pollen count in Northwest Harwinton today?
The Northwest Harwinton ragweed pollen index today is 13 (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 Northwest Harwinton today. See the full Northwest Harwinton pollen count for the overall index and every type together.
Northwest Harwinton Ragweed Pollen Count: 5-Day Forecast
| Day | Overall index | Category |
|---|---|---|
| Saturday, November 7 | 10 | Low |
| Sunday, November 8 | 15 | Low |
| Monday, November 9 | 15 | Low |
| Tuesday, November 10 | 15 | Low |
| Wednesday, November 11 | 14 | Low |
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 Northwest Harwinton’s overall trend across the week. Today’s ragweed pollen reading is the headline above.
Species driving Northwest Harwinton’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 13 (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 Northwest Harwinton now — ragweed pollen
Detailed plant-by-plant readings for the ragweed pollen category were not returned in today’s source data for Northwest Harwinton. The type summary stands: ragweed pollen reads 13 (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 Connecticut allergy season guide singles out oak, the spring heavyweight peaking in May, with birch alongside.
Northwest Harwinton allergies today
Northwest Harwinton allergies today are set by the same reading as the Northwest Harwinton pollen count today: the Total Pollen Index is 10 (Low), and the ragweed pollen index on this page is 13 (Low) of it. When people ask about Northwest Harwinton allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Northwest Harwinton.
Allergies in Northwest Harwinton follow the Connecticut calendar set out on the full Northwest Harwinton 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 Northwest Harwinton 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 Northwest Harwinton allergy forecast for the ragweed pollen season: it shows whether Northwest Harwinton 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.
Northwest Harwinton tree pollen count
Northwest Harwinton grass pollen count
See Northwest Harwinton on the pollen map
Every pollen type, with photos and seasons: the pollen directory
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).