Ragweed Pollen Count in Four Square Mile, CO — Today

Updated Saturday, November 7, 2026

Pollen by type in Four Square Mile

What is the ragweed pollen count in Four Square Mile today?

The Four Square Mile ragweed pollen index today is 25 (Low) on Pollen Atlas’s modelled 0–100 scale. Low

Modelled pollen risk index — not a measured count.

Ragweed pollen is the dominant allergen in Four Square Mile today. See the full Four Square Mile pollen count for the overall index and every type together.

Four Square Mile is a census-designated place in Arapahoe County, Colorado. Its population is 21,788 (ACS 2023).

Four Square Mile Ragweed Pollen Count: 5-Day Forecast

DayOverall indexCategory
Saturday, November 719Low
Sunday, November 819Low
Monday, November 919Low
Tuesday, November 1019Low
Wednesday, November 1121Low

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 Four Square Mile’s overall trend across the week. Today’s ragweed pollen reading is the headline above.

Species driving Four Square Mile’s ragweed 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: ragweed pollen reads 25 (Low) today. The plant-by-plant detail that is available, from the Google Pollen API, is in the next section.

How to read this: the “ragweed” figure on this site is the modelled weed pollen index — the weed group (ragweed + mugwort) — printed under the ragweed name the rankings use.

Plants affecting Four Square Mile now — ragweed pollen

Detailed plant-by-plant readings for the ragweed pollen category were not returned in today’s source data for Four Square Mile. The type summary stands: ragweed pollen reads 25 (Low) today.

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’s readings.

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

What this ragweed pollen level means

Low risk. Keep windows open; consider allergy meds only if sensitive.

Enjoy outdoor activities.

Ragweed and sagebrush-family weeds close the year from late summer. This month sits outside the usual ragweed pollen window for the Mountain West pattern, so today’s ragweed pollen reading is the modelled value outranking the calendar — this page reports the modelled reading first. The Colorado allergy season guide singles out juniper, arriving ahead of the local tree season, and the ragweed and sagebrush-family weeds of late summer.

Four Square Mile allergies today

Four Square Mile allergies today are set by the same reading as the Four Square Mile pollen count today: the Total Pollen Index is 19 (Low), and the ragweed pollen index on this page is 25 (Low) of it. When people ask about Four Square Mile allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Four Square Mile.

Allergies in Four Square Mile follow the Colorado calendar set out on the full Four Square Mile 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 Four Square Mile before heading outdoors, the ragweed 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 Four Square Mile allergy forecast for the ragweed pollen season: it shows whether Four Square Mile 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 Four Square Mile pollen count — all types, the overall index and today’s ranking context

Four Square Mile tree pollen count

Four Square Mile grass pollen count

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

See Four Square Mile on the pollen map

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

Colorado allergy season guide

Ragweed season

Find an allergist in Four Square Mile, CO

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).