Environmental Radiation Monitoring

index Current Data Tables Graphs Map Additional Information
　
　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 Jun 11 13:00 - 12 13:00 (Average for one hour)
　
24hours 48hours 7days 　

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