Pollen today
Loading today’s values…
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 Rochester 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 2:18 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.
Google has given no index for Rochester since records began on October 14, 2026.
Highest level each week, November 2025 to November 2026, from each day’s forecast.
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 Rochester 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 12.2% of adults in the city of Rochester have current asthma, according to the CDC’s PLACES estimate for 2023 (95% confidence interval: 10.9% to 13.6%). It is a statistical estimate from national survey data, not a count.
22 allergists enrolled in Medicare practice in the Rochester area: 2.08 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 Rochester 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.
Only about 181 days separate the last spring freeze from the first fall freeze in a typical year at Rochester’s airport, so plants have about half the year to grow.1 Winters there average about 29 °F, and about 102 inches of snow falls in an average year.1
Rochester was one of four upstate cities, with Albany, Buffalo and Syracuse, where researchers randomly sampled 480 street trees over 12 inches in diameter in 2007 to study trunk decay.2 The sample included Norway, silver and sugar maples; maples often make up over half of the street trees in New York communities large and small.2 Many of those maples replaced American elms lost to the Dutch elm disease epidemic that began in the 1930s.2
Common ragweed is a widespread and common weed of farm fields, waste areas and gardens in New York.3 The New York Flora Atlas lists it as a very weedy native species of cultivated ground, roadsides and waste places.4 Its small green flowers appear at the ends of its branches in late summer.3
Answered from the values on this page.
Very little. None of the plants Google models is above 0 in Rochester today.
No. It’s Google’s modeled pollen index, from 0 (none) to 5 (very high), calculated for the location of central Rochester. 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 Rochester, 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.
Source: Includes pollen data from GoogleIncludes data from Google Maps