Letha, ID Pollen Count

What is the Letha pollen count today?

The Letha pollen count today is 24 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.

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

Letha allergies today

Letha allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 24 (Low), driven mainly by Ragweed. When people ask about Letha allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Letha.

Allergies in Letha 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 Letha 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 Letha allergy forecast: today reads 24 (Low), and the day-by-day outlook shows whether Letha 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 Letha today records is this same combined reading — tree, grass, weed and mold in one index.

The Letha allergy count today is 24 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.

Pollen count today Letha: the 5-day forecast

Pollen Atlas forecasts Letha’s pollen count to peak on Saturday at 25 (Low) over the next 5 days.

Pollen by type in Letha

• Letha tree pollen count
• Letha grass pollen count
• Letha ragweed pollen count

What is driving Letha’s pollen today

The shape of today’s 24 (Low) is set by weed pollen at 31 (Low on its own scale) — about 96% of the four category readings added together, 30.4 points clear of the next category, tree pollen at 0.6. A weed-led total is the classic late-year shape: tree and grass pollen have usually receded, leaving weed pollen — and on damp days mold — to make up most of what the index records. Weed pollen leading in November runs against the usual calendar — the Idaho weed chapter runs August to October — 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 Letha, 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 23 to 25, never changing band. Today’s 24 sits level with the window’s average of 24 — a steady window, in which one day reads much like the next.

Plants affecting Letha now

Detailed plant-by-plant readings for Letha 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 0.6 (Low).

Weed pollen is one of the categories with a non-zero reading today, at 31 (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.

Letha pollen through the year

Chapter by chapter, the Letha pollen year runs like this:

• Juniper can arrive in late winter, and the main tree wave builds in spring — as late as April at Denver’s altitude.
• Grasses follow in a compressed early-summer run.
• Ragweed and sagebrush-family weeds close the year from late summer.

The Idaho allergy season guide names sagebrush, the signature weed of the Snake River plain from August through October. 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.

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 Letha 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.

Letha in today’s national picture

At 24 (Low), Letha ranks joint 39349th 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 Letha: Emmett, ID (8 miles away) reads 21 (Low); New Plymouth, ID (10 miles away) reads 25 (Low); Middleton, ID (13 miles away) reads 24 (Low). Letha reads 3 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 Letha resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Letha, 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.

Letha in its local area

Across Idaho’s 236 tracked cities, Letha ranks joint 74th today.

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

Nearby cities

• Emmett pollen count (8 miles away)
• New Plymouth pollen count (10 miles away)
• Middleton pollen count (13 miles away)
• Notus pollen count (14 miles away)
• Eagle pollen count (14 miles away)
• Star pollen count (15 miles away)

From Pollen Atlas News

• Idaho allergy season
• Ragweed season