Environmental Radiation Monitoring

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　Environmental Gamma Radiation Levels

A temporary rise in airborne gamma radiation can be seen when it rains. This is due to radon, which occurs naturally in the atmosphere, descending to the ground with the rain.

　Last data collected until 2025 May 14 19:00 - 21 19:00 (Average for one hour)
　
24hours 48hours 7days 　

Environmental Gamma Radiation Levels inside Monju and Fugen Sites
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Environmental Gamma Radiation Levels outside Monju and Fugen Sites
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Precipitation
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