Clifton, CO Pollen Count

Clifton, CO · Last updated Friday, November 6, 2026

This page shows the most recent reading available for Clifton — from Friday, November 6, 2026 (1 day ago) — not today's reading.

Pollen Overview

Today's overall pollen level and the dominant type (trees, weeds, grass, or mold).

LowDominant Allergen: Weeds
Clifton, CO · Sat, Nov 7

Total Pollen Index

The combined pollen level across all types (0–100).

Clifton, CO

18index / 100
Low
0–40 Low41–60 Moderate61–100 High

Weeds Index

How active weeds pollen is today (0–100).

Clifton, CO

24index / 100
Low
0–40 Low41–60 Moderate61–100 High

Pollen Types

Pick a pollen subtype to update the species forecast

Top Allergens for Clifton:

5-Day Clifton Overall Pollen Forecast

Bars are colored by severity (Low/Moderate/High).

Pollen count Clifton residents check each morning

The Clifton pollen count today is 18 (Low). The main driver is Ragweed, with weed pollen at 24 today. The full split is tree pollen 0.6, grass pollen 0.6, weed pollen 24. The sections below break that headline number down by plant, by day and by what the band means in practice. Pollen Atlas updated this count on Friday, November 6, 2026.

A Low band on the Pollen Atlas index means the Total Pollen Index has stayed in the lower part of the 0–100 scale. Readings in this band are built from low individual category values rather than from one large spike, and the category split above matters more than the headline number: a low total can still contain one category, such as weed pollen or mold, reading noticeably higher than the rest, which is why the split is printed on every Clifton page.

Higher-elevation Mountain West cities generally run a shorter outdoor pollen season than the coasts or the South, with the main tree and grass activity compressed into the warmer months. Autumn and winter pages in this region are therefore commonly quiet, with low totals built from small weed and mold values. A low reading in this region and season is the expected pattern, and any future rise will show first in the category split and the forecast, not in the headline alone.

To see whether today’s pollen level holds, check the 5-day Clifton pollen forecast below — it is currently mixed, with Sunday the highest day in the window.

This is the pollen count Clifton residents check each morning, built from the day’s tree, grass, weed and mold readings.

What is the Clifton pollen count today?

The Clifton pollen count today is 18 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.

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

Clifton allergies today

Clifton allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 18 (Low), driven mainly by Ragweed. When people ask about Clifton allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Clifton.

Allergies in Clifton follow the Colorado 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 Clifton 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 Clifton allergy forecast: today reads 18 (Low), and the day-by-day outlook shows whether Clifton 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 Clifton today records is this same combined reading — tree, grass, weed and mold in one index.

The Clifton allergy count today is 18 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.

Pollen count today Clifton: the 5-day forecast

DayTotal Pollen IndexBand
Friday, November 618Low
Saturday, November 718Low
Sunday, November 820Low
Monday, November 918Low
Tuesday, November 1018Low

Pollen Atlas forecasts Clifton’s pollen count to peak on Sunday at 20 (Low) over the next 5 days.

Pollen by type in Clifton

What is driving Clifton’s pollen today

The shape of today’s 18 (Low) is set by weed pollen at 24 (Low on its own scale) — about 95% of the four category readings added together, 23.4 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 Colorado 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 Clifton, so the drivers have to be read from the category split above. The Colorado guide’s account of Colorado names juniper, arriving ahead of the local tree season, and the ragweed and sagebrush-family weeds of late summer — 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 18 to 20, never changing band. Today’s 18 sits 0 points below the window’s average of 18.4 — a steady window, in which one day reads much like the next.

Plants affecting Clifton now

Detailed plant-by-plant readings for Clifton 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 24 (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.

Clifton pollen through the year

The Clifton pollen year runs in chapters, set by the Mountain West pattern and the Colorado calendar. Trees come first: juniper can arrive in late winter, and the main tree wave builds in spring — as late as April at Denver’s altitude. Grasses take the middle of the year: grasses follow in a compressed early-summer run. Weeds close it out: ragweed and sagebrush-family weeds close the year from late summer.

The Colorado allergy season guide names juniper, arriving ahead of the local tree season, and the ragweed and sagebrush-family weeds of late summer. Altitude compresses Colorado’s season rather than removing it: the waves arrive late — Denver’s tree pollen typically builds in April — and end with early frosts, but they run in a tight sequence. The season ends with the first hard frosts, which stop the late-summer weeds — Denver usually reaches frost in fall, while mountain towns can frost far earlier.

November falls between the main chapters of the Colorado 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 Colorado 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 Colorado allergy season guide.

How to read this index

Pollen Atlas reports the Clifton 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.

Clifton in today’s national picture

At 18 (Low), Clifton ranks joint 56739th 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 Clifton: Fruitvale, CO (2 miles away) reads 18 (Low); Orchard Mesa, CO (4 miles away) reads 18 (Low); Grand Junction, CO (6 miles away) reads 17 (Low). Clifton reads exactly level with its nearest tracked neighbour today. Across Colorado’s 479 tracked cities, today runs from 5 in Parker to 32 in Dillon.

Pollen totals are population numbers; symptoms are personal. The same reading can leave one Clifton resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every season, allergists in Clifton, CO 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.

Clifton in its local area

Clifton is a census-designated place in Mesa County, Colorado. Its population is 19,746 (ACS 2023).

Across Colorado’s 479 tracked cities, Clifton ranks joint 263rd today.

Like every Pollen Atlas city page, the Clifton, CO pollen count is refreshed each morning.

Nearby cities

From Pollen Atlas News

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

See Clifton on the US pollen map

Search the full allergist 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).