Ragweed Pollen Count in Berkley, CO — Today
Updated Saturday, November 7, 2026
Pollen by type in Berkley
What is the ragweed pollen count in Berkley today?
The Berkley ragweed pollen index today is 27 (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 Berkley today. See the full Berkley pollen count for the overall index and every type together.
Berkley is a census-designated place in Adams County, Colorado. Its population is 10,838 (ACS 2023).
Berkley Ragweed Pollen Count: 5-Day Forecast
| Day | Overall index | Category |
|---|---|---|
| Saturday, November 7 | 21 | Low |
| Sunday, November 8 | 21 | Low |
| Monday, November 9 | 21 | Low |
| Tuesday, November 10 | 21 | Low |
| Wednesday, November 11 | 22 | 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 Berkley’s overall trend across the week. Today’s ragweed pollen reading is the headline above.
Species driving Berkley’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 27 (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 Berkley now — ragweed pollen
Detailed plant-by-plant readings for the ragweed pollen category were not returned in today’s source data for Berkley. The type summary stands: ragweed pollen reads 27 (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.
Berkley allergies today
Berkley allergies today are set by the same reading as the Berkley pollen count today: the Total Pollen Index is 21 (Low), and the ragweed pollen index on this page is 27 (Low) of it. When people ask about Berkley allergies, this is the number that answers them — one daily modelled index built from today’s tree, grass and weed index values for Berkley.
Allergies in Berkley follow the Colorado calendar set out on the full Berkley 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 Berkley 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 Berkley allergy forecast for the ragweed pollen season: it shows whether Berkley 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 Berkley pollen count — all types, the overall index and today’s ranking context
See how Berkley 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).