Tree Pollen Count in Arena, WI
Last updated Friday, November 6, 2026
This page shows the most recent reading available for Arena — from Friday, November 6, 2026 (1 day ago) — not today's reading.
Pollen by type in Arena
What is the tree pollen count in Arena today?
The Arena tree pollen index today is 0.6 (Low) on Pollen Atlas’s modelled 0–100 scale. Low
Modelled pollen risk index — not a measured count.
Arena’s overall pollen count today is 31 (Low) across all types. See the full Arena pollen count for the overall index and every type together.
Arena Tree Pollen Count: 5-Day Forecast
| Day | Overall index | Category |
|---|---|---|
| Friday, November 6 | 31 | Low |
| Saturday, November 7 | 31 | Low |
| Sunday, November 8 | 25 | Low |
| Monday, November 9 | 18 | Low |
| Tuesday, November 10 | 12 | 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 Arena’s overall trend across the week. Today’s tree pollen reading is the headline above.
Species driving Arena’s tree 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: tree pollen reads 0.6 (Low) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.
Plants affecting Arena now — tree pollen
Detailed plant-by-plant readings for the tree pollen category were not returned in today’s source data for Arena. The type summary stands: tree pollen reads 0.6 (Low) today.
In the Midwest & Great Lakes pattern, the plants that typically shape this city’s year are spring trees, late-spring and summer grasses, and late-summer and autumn 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 tree pollen level means
Low risk. Keep windows open; consider allergy meds only if sensitive.
Enjoy outdoor activities.
Trees run from March into May, later near the big lakes. This month sits outside the usual tree pollen window for the Midwest & Great Lakes pattern, so today’s tree pollen reading is the modelled value outranking the calendar — this page reports the modelled reading first. The Wisconsin allergy season guide singles out oak in the south and birch in the north, and a September ragweed peak over the farmland.
Arena allergies today
Arena allergies today are set by the same reading as the Arena pollen count today: the Total Pollen Index is 31 (Low), and the tree pollen index on this page is 0.6 (Low) of it. When people ask about Arena allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Arena.
Allergies in Arena follow the Wisconsin calendar set out on the full Arena 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 Arena before heading outdoors, the tree 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 Arena allergy forecast for the tree pollen season: it shows whether Arena 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 Arena pollen count — all types, the overall index and today’s ranking context
See how Arena ranks in today's pollen count rankings — the worst cities for allergies today
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).