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Average Forecasted Grass Pollen Index (May-August 2024): 2.4 | Rank: 56 Historical Wind Speed (May-August 2020): 8.3 mph | Rank: 111 Average Number of Significant Grass Allergens: 16 | Rank: 1
A pollen count is a measurement of the number of pollen grains in a given volume of air. Pollen counts, and forecasts of pollen conditions, are routinely produced and reported to the public because high aerial pollen concentration is associated with increased rates of allergic reaction for those with conditions such as hay fever and asthma .
Pollen allergy seasons can be very different depending on where in the U.S. you are. Here are the 10 best and worst cities for people with allergies.
The pollen source in a given area depends on the type of vegetation present and the length of their bloom period. What type of vegetation will grow in an area depends on soil texture, soil pH , soil drainage, daily maximum and minimum temperatures, precipitation, extreme minimum winter temperature, and growing degree days .
The U.S. State of Ohio currently has 55 statistical areas that have been delineated by the Office of Management and Budget (OMB). On July 21, 2023, the OMB delineated 11 combined statistical areas, 15 metropolitan statistical areas, and 29 micropolitan statistical areas in Ohio. [1]
The study evaluated 197 cities in the U.S. and revealed that a warming climate results in more freeze-free days each year, which gives plants more time to grow and release allergy-inducing pollen.
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Cities in Ohio are municipalities whose population is no less than 5,000; smaller municipalities are called villages. Nonresident college students and incarcerated inmates do not count towards the city requirement of 5,000 residents. [1] There are currently 253 cities and 673 villages in Ohio, for a total of 926 municipalities.