Discover the latest radiation information across Japan with our comprehensive data on radiation levels in various regions. From Hokkaido to Okinawa, we provide detailed graphs showing radiation levels at 4078 locations updated every 10 minutes. The color-coded graphs make it easy to understand, with darker shades indicating higher radiation levels.

Looking for specific data? Use our search feature to find the closest monitoring point based on location or postal code. Whether you're interested in daily, weekly, or monthly trends, we've got you covered. Our site relies on data from the Radiation Monitoring Information website by the Ministry of Education, Culture, Sports, Science and Technology.

Rest assured, our service is a non-profit initiative created by individuals as part of disaster relief efforts. All information is sourced from official government and prefectural data sources. Trust us for reliable radiation information. Copyright (C) satoru.net / Twitter / Blog / Mail.