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 Cleveland 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 2:47 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 Cleveland 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 Cleveland 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 13.0% of adults in the city of Cleveland have current asthma, according to the CDC’s PLACES estimate for 2023 (95% confidence interval: 11.7% to 14.4%). It is a statistical estimate from national survey data, not a count.
30 allergists enrolled in Medicare practice in the Cleveland area: 1.39 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 Cleveland 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.
Lake Erie has a significant influence on local climate in Ohio, and places near its shore are considerably warmer in winter and cooler in summer.2 The northern part of the state, along the lake’s southern shore, receives 60 inches or more of snow a year.2 Cleveland’s airport gets about 64 inches in a typical year, yet about 198 days pass between the last spring freeze and the first fall freeze.1
Cleveland and Akron are the urban centers at the northern and southern ends of Cuyahoga Valley National Park.3 About 80% of the park’s natural vegetation is mixed-mesophytic forest, and the oak-hickory association is the most widespread.4 The park’s fields, forests and wetlands are home to more than 90 species of grasses.4
Timothy, a grass found almost everywhere in Ohio, flowers in June and early July.5 Late summer brings ragweed, which usually starts blooming in August and continues into November.6 September is its highest pollen month, and Ohio has two species, common and giant.6
Answered from the values on this page.
Very little. None of the plants Google models is above 0 in Cleveland today.
No. It’s Google’s modeled pollen index, from 0 (none) to 5 (very high), calculated for the location of central Cleveland. 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 Cleveland, 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