Grass Pollen Count in Centre Hall, PA — Today
Updated Saturday, November 7, 2026
Pollen by type in Centre Hall
What is the grass pollen count in Centre Hall today?
The Centre Hall 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.
Centre Hall’s overall pollen count today is 26 (Low) across all types. See the full Centre Hall pollen count for the overall index and every type together.
Centre Hall Grass Pollen Count: 5-Day Forecast
| Day | Overall index | Category |
|---|---|---|
| Saturday, November 7 | 26 | Low |
| Sunday, November 8 | 25 | Low |
| Monday, November 9 | 25 | Low |
| Tuesday, November 10 | 25 | Low |
| Wednesday, November 11 | 21 | 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 Centre Hall’s overall trend across the week. Today’s grass pollen reading is the headline above.
Species driving Centre Hall’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 Centre Hall 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 Centre Hall now — grass pollen
Detailed plant-by-plant readings for the grass pollen category were not returned in today’s source data for Centre Hall. 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.
Centre Hall allergies today
Centre Hall allergies today are set by the same reading as the Centre Hall pollen count today: the Total Pollen Index is 26 (Low), and the grass pollen index on this page is 0.6 (Low) of it. When people ask about Centre Hall allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Centre Hall.
Allergies in Centre Hall follow the Pennsylvania calendar set out on the full Centre Hall 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 Centre Hall 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 Centre Hall allergy forecast for the grass pollen season: it shows whether Centre Hall 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 Centre Hall pollen count — all types, the overall index and today’s ranking context
Centre Hall ragweed pollen count
See how Centre Hall ranks in today's pollen count rankings — the worst cities for allergies today
See Centre Hall 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).