Pollen today
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Pollen today
Loading today’s values…
Google gave no index for tree, grass or weed pollen here today.
Next four days, highest level each day:
Source: Includes pollen data from GoogleGoogle Maps
Source: Includes pollen data from GoogleIncludes data from Google Maps
Google’s index for each plant it models in Cincinnati today. A plant out of season has no index.
Source: Includes pollen data from GoogleGoogle Maps
The forecast that moves pollen around, and the air beside it.
Forecast: National Weather Service, updated 12:49 pm ET.
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Each thread is one kind of pollen, and each square is one week, colored by that week’s highest level.
Records for Cincinnati began on October 14, 2026. Each week adds a square.
Highest level each week, November 2025 to November 2026, from each day’s forecast.
| Week | Tree | Grass | Weed |
|---|---|---|---|
| Oct 28 to Nov 3 | Not recorded | Not recorded | 1 Very low |
| Oct 21 to Oct 27 | Not recorded | Not recorded | 2 Low |
| Oct 14 to Oct 20 | Not recorded | Not recorded | 2 Low |
Source: Includes pollen data from GoogleIncludes data from Google Maps
What this forecast doesn’t measure, and when to get help.
Google’s index covers tree, grass and weed pollen only, so there is no mold level for Cincinnati on this page. The National Allergy Bureau publishes pollen and mold counts measured at its stations. Our guides cover common molds such as Alternaria, Cladosporium and Aspergillus.
The forecast doesn’t cover allergens indoors either: dust mites, cockroaches, mice, cats and dogs. Our guides explain each one, starting with dust mites and cats.
An estimated 12.3% of adults in the city of Cincinnati have current asthma, according to the CDC’s PLACES estimate for 2023 (95% confidence interval: 11.0% to 13.7%). It is a statistical estimate from national survey data, not a count.
34 allergists enrolled in Medicare practice in the Cincinnati area: 1.47 for every 100,000 people, more than the 1.22 across the US. The count doesn’t show how soon you can get an appointment. See the doctors listed in the Cincinnati area, or how every state and metro compares.
AllergyNest count from CMS’s Doctors and Clinicians file (October 2026) and Census population estimates for 2025.
The geography, climate and plants behind each season here, with a source for every fact.
Pollen and mold counts are part of the work of the Southwest Ohio Air Quality Agency, based in Cincinnati, along with air toxics levels and emissions inventory programs.2 About 45 inches of rain and other precipitation falls in an average year at the Cincinnati/Northern Kentucky airport, and winters average about 34 °F.1
Cincinnati Parks maintains 85,000 public street trees, and the city’s tree canopy grew from 38% to 43% over five years.3 The Ohio and central Mississippi river valleys have optimum conditions for white oak, which flowers in spring at about the same time its leaves appear.4
Tall fescue, a grass found throughout Ohio and cultivated in the southern part of the state, flowers between May and June.5 Ragweed usually starts blooming in August and continues into November, and its highest pollen month is September.6
Answered from the values on this page.
Very little. None of the plants Google models is above 0 in Cincinnati today.
No. It’s Google’s modeled pollen index, from 0 (none) to 5 (very high), calculated for the location of central Cincinnati. A pollen count is the number of pollen grains measured in a cubic meter of air at a counting station. How our pollen index works.
Twice a day. We fetch new values soon after midnight in Cincinnati, so each day starts with its own values, and again after Google’s daily model run, usually by about 10:30 am ET. Each section shows when its values were retrieved.
Since October 14, 2026. The year in pollen above fills in as each day is recorded, and weeks before then show no data. Google doesn’t provide past values, so nothing earlier can be added.
Source: Includes pollen data from GoogleIncludes data from Google Maps