Sun Valley, ID Pollen Count

What is the Sun Valley pollen count today?

The Sun Valley pollen count today is 20 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Grass.

Short answer for anyone searching pollen count today Sun Valley: this page is updated every morning with the day’s modelled reading.

Sun Valley allergies today

Sun Valley allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 20 (Low), driven mainly by Grass. When people ask about Sun Valley allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Sun Valley.

Allergies in Sun Valley follow the Idaho calendar set out below — the chapters, the plants behind them, and the 5-day forecast on this page show whether today is typical for the season or an exception to it. If you are checking allergies today in Sun Valley before heading outdoors, the split at the top of this page is the part to read: it shows which pollen is doing the work today, not just how high the total sits.

Read the five-day table on this page as the Sun Valley allergy forecast: today reads 20 (Low), and the day-by-day outlook shows whether Sun Valley allergies are set to ease or build across the week — the days to plan outdoor time around are the ones where the index steps down, not just today.

In practice, the allergy count Sun Valley today records is this same combined reading — tree, grass, weed and mold in one index.

The Sun Valley allergy count today is 20 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.

Pollen count today Sun Valley: the 5-day forecast

Pollen Atlas forecasts Sun Valley’s pollen count to peak on Sunday at 21 (Low) over the next 5 days.

Pollen by type in Sun Valley

• Sun Valley tree pollen count
• Sun Valley grass pollen count
• Sun Valley ragweed pollen count

What is driving Sun Valley’s pollen today

The shape of today’s 20 (Low) is set by grass pollen at 26 (Low on its own scale) — about 96% of the four category readings added together, 25.4 points clear of the next category, tree pollen at 0.6. Grass-led totals tend to hold a level for days at a time rather than spike and clear, because grasses pollinate over an extended period. Grass pollen leading in November runs against the usual calendar — the Idaho grass chapter runs May to July — so today’s lead is the model outranking the pattern, and this page reports the modelled reading first.

Plant-level detail is not in today’s feed for Sun Valley, so the drivers have to be read from the category split above. The Idaho guide’s account of Idaho names sagebrush, the signature weed of the Snake River plain from August through October — the pollens behind readings of this shape in this state — and the split shows how much of today’s total each category is actually carrying.

Across the five-day window the Total Pollen Index runs from 20 to 21, never changing band. Today’s 20 sits 0 points below the window’s average of 20.2 — a steady window, in which one day reads much like the next.

Plants affecting Sun Valley now

Detailed plant-by-plant readings for Sun Valley were not returned in today\u2019s source data, so this section summarises the pollen types the index above is built from instead of listing individual plants.

Tree pollen is one of the categories with a non-zero reading today, at 0.6 (Low).

Grass pollen is one of the categories with a non-zero reading today, at 26 (Low).

Weed pollen is one of the categories with a non-zero reading today, at 0.6 (Low).

In the Mountain West pattern, the plants that typically shape this city’s year are spring trees and late-spring grasses in a compressed warm-season window — named here as regional context only, not as today\u2019s measurements.

Plant detail returns here automatically on any day the source data includes it.

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

Sun Valley pollen through the year

Three chapters make the Idaho pollen year, and Sun Valley follows them in the Mountain West order. The tree chapter: juniper can arrive in late winter, and the main tree wave builds in spring — as late as April at Denver’s altitude. The grass chapter: grasses follow in a compressed early-summer run. The weed chapter: ragweed and sagebrush-family weeds close the year from late summer.

Southwest Idaho’s working calendar runs trees from February to May, grasses from May to July, and weeds from August — and elevation delays everything, so the eastern high country starts later and ends earlier than the Treasure Valley. The northern panhandle is a different regime — wetter and forested, with pine, cedar and alder in spring and a softer sagebrush presence. The Idaho guide singles out sagebrush, the signature weed of the Snake River plain from August through October.

November falls between the main chapters of the Idaho pollen year — the tail of one and the approach of the next — so the calendar alone explains little today, and the modelled split above carries the story. Between them, the three chapters cover 9 months of the Idaho year, February to October — leaving a quiet gap of roughly 3 months in the depth of the off-season. The full calendar is set out in the Idaho allergy season guide.

How to read this index

Pollen Atlas reports the Sun Valley pollen count on a Total Pollen Index from 0 to 100, built from separate tree, grass and weed readings. The total is a summary, not an average of the three: a single strong category can lift it, and three quiet categories can hold it down whatever the month. Index values are a modelled pollen risk index computed by Pollen Atlas from open weather, vegetation and phenology data, calibrated against CDC/NAB season data, with plant detail by the Google Pollen API. The index is a modelled 0–100 scale, not a measured count, and figures update through the day, so a morning and an evening visit to this page can legitimately show different numbers.

Sun Valley in today’s national picture

At 20 (Low), Sun Valley ranks joint 50794th of the 90896 cities Pollen Atlas tracks today — in the middle of the national table. The highest reading in the country today is Serpa, Portugal at 53, and the lowest is Galiakberovo, Russia at 5. The whole table spans 48 points today — a wide-open day, when the top and bottom of the table are effectively in different seasons.

Around Sun Valley: Ketchum, ID (2 miles away) reads 18 (Low); Hailey, ID (12 miles away) reads 5 (Low); Bellevue, ID (15 miles away) reads 5 (Low). Sun Valley reads 2 points higher than its nearest tracked neighbour today. Across Idaho’s 236 tracked cities, today runs from 5 in Coeur d'Alene to 29 in Genesee.

Pollen totals are population numbers; symptoms are personal. The same reading can leave one Sun Valley resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Sun Valley, ID can test whether tree, grass, weed or mold is the category that matters for you — the four readings at the top of this page are the starting point for that conversation.

Sun Valley in its local area

Across Idaho’s 236 tracked cities, Sun Valley ranks joint 108th today.

Like every Pollen Atlas city page, the Sun Valley, ID pollen count is refreshed each morning.

Nearby cities

• Ketchum pollen count (2 miles away)
• Hailey pollen count (12 miles away)
• Bellevue pollen count (15 miles away)
• Gannett pollen count (24 miles away)
• Carey pollen count (32 miles away)
• Fairfield pollen count (33 miles away)

From Pollen Atlas News

• Idaho allergy season
• Grass pollen season