Grass Pollen Count in New Castle Northwest, PA — Today

Updated Saturday, November 7, 2026

Pollen by type in New Castle Northwest

What is the grass pollen count in New Castle Northwest today?

The New Castle Northwest 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.

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

New Castle Northwest Grass Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 712Low
Sunday, November 816Low
Monday, November 916Low
Tuesday, November 1016Low
Wednesday, November 1116Low

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 New Castle Northwest’s overall trend across the week. Today’s grass pollen reading is the headline above.

Species driving New Castle Northwest’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 New Castle Northwest 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 Pennsylvania allergy season guide singles out oak, peaking in late April and May, with maple sharing the spring stage.

Plants affecting New Castle Northwest now — grass pollen

Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for New Castle Northwest. 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 Pennsylvania allergy season guide singles out oak, peaking in late April and May, with maple sharing the spring stage.

New Castle Northwest allergies today

New Castle Northwest allergies today are set by the same reading as the New Castle Northwest pollen count today: the Total Pollen Index is 12 (Low), and the grass pollen index on this page is 0.6 (Low) of it. When people ask about New Castle Northwest allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for New Castle Northwest.

Allergies in New Castle Northwest follow the Pennsylvania calendar set out on the full New Castle Northwest 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 New Castle Northwest 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 New Castle Northwest allergy forecast for the grass pollen season: it shows whether New Castle Northwest 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 New Castle Northwest pollen count — all types, the overall index and today’s ranking context

New Castle Northwest tree pollen count

New Castle Northwest ragweed pollen count

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

See New Castle Northwest on the pollen map

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

Pennsylvania allergy season guide

Grass pollen season

Find an allergist in New Castle Northwest, PA

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).