Us Radiation Levels

How to Read the Map:

The numbers represent radiation Counts per Minute, abbreviated CPM, and under normal conditions, quantify the level of background radiation.  Depending on your location, your elevation or altitude, and your model of Geiger counter, this background radiation level might average anywhere from 5 to 60 CPM, and while background radiation levels are random, it would be unusual for those levels to exceed 100 CPM, or 2.5 times a Station’s baseline readings.  Thus, the “Alert Level” for the National Radiation Map is the lesser of 100 CPM or 2.5 times normal, so if you see any Monitoring Stations with CPM value above 100, and/or further indicated by an Alert symbol over those stations, it probably means that some radioactive source above and beyond background radiation is responsible.

Hawaii Current EPA Radnet Radiation Air Monitoring Data

Alaska Current EPA Radnet Radiation Air Monitoring Data

Northeast US Current EPA Radnet Radiation Air Monitoring Data

Southeast US Current EPA Radnet Radiation Air Monitoring Data

Southwest US Current EPA Radnet Radiation Air Monitoring Data

Northwest US Current EPA Radnet Radiation Air Monitoring Data

Europe Current EPA Radnet Radiation Air Monitoring Data

Australia Current EPA Radnet Radiation Air Monitoring Data

South America Current EPA Radnet Radiation Air Monitoring Data