Shohei Fujiki 
Cedar pollen spreads through the air. (File photo)
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The dreaded hay fever season has arrived. As March begins, cedar pollen is spreading rapidly across the Kansai region. Levels are expected to be significantly higher than usual. Hay fever causes symptoms like sneezing, a runny nose, and itchy eyes.
According to the Japan Weather Association, cedar pollen was already detected in several Kansai locations as of February 28. These include Tanabe City in Wakayama Prefecture, Izumisano City in Osaka Prefecture, and Kakogawa City in Hyogo Prefecture.
Peak Pollen
Pollen levels began rising between February 28 and March 2. A peak is expected between early and mid-March, following the passing of a cold wave.
The amount of pollen this season is forecasted to be extremely high compared to average years. The association attributes this to the intense heat and prolonged sunshine during the summer of 2024. These conditions created ideal circumstances for bud formation.
Tips to Reduce Pollen Exposure
Hay fever is an allergic reaction triggered when pollen enters the body. When inhaled, the immune system produces antibodies to fight off these foreign substances. With continued exposure, the buildup of antibodies leads to symptoms such as sneezing, nasal congestion, and eye irritation.
The Japan Weather Association notes that pollen disperses more easily on sunny, warm days. This is especially true when the air is dry and windy, or following rainfall or two to three days of high temperatures. To minimize exposure, they recommend wearing masks and glasses to protect the eyes and nose. It's also best to wear smooth-textured clothing, as pollen is less likely to stick to it.
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Author: Shohei Fujiki, The Sankei Shimbun
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