Radiation measurements in Tokyo

Shows a graphical representation of the radiation levels in Shinjuku, Tokyo, for the last 24 hours or 7 days. Menu is available in English and Japanese (default). The data is provided by the Tokyo Metropolitan Institute of Public Health and is updated hourly. The green area at the bottom of the graph is the normal range for radiation levels in the Tokyo area. However, (at the time of writing) the level where the radiation becomes dangerous to humans is so far off the chart it's not included.