USA radiation map: live radiation levels

43 online stations · updated 14 minutes ago

Right now, 43 uRADMonitor stations in USA report a median background dose rate of 0.120 µSv/h, with values between 0.010 and 0.417 µSv/h. Typical outdoor background radiation is between about 0.05 and 0.20 µSv/h. It depends on altitude and local geology, and it rises briefly during rain.

This is a live, real-time radiation map of USA (United States, the US, America). It shows measured background radiation, not a modelled fallout plume: every point is a real Geiger counter station reporting now. In a nuclear event, the same network is how a sustained rise above local background would show up across USA.

Radiation stations in USA

How these values are measured

Each station counts ionizing radiation events with a Geiger tube and reports counts per minute (CPM). The dose rate shown here is the average of the station's latest readings multiplied by a conversion factor specific to its tube. Values from different tubes are comparable in µSv/h, not in CPM.

Air quality in USA

Frequently asked questions

Is this a real-time radiation map of USA?

Yes. Every value comes from a uRADMonitor Geiger counter station in USA reporting live, updated continuously. There are 43 stations online right now.

Does it show nuclear radiation or fallout?

It shows the ambient dose rate from all ionising radiation, natural and artificial. It is not a modelled fallout map, but a real release would appear as a sustained rise above local background across the nearest stations, which is exactly what a distributed network is built to detect.

What is a normal radiation level in USA?

Outdoor background is typically between 0.05 and 0.20 µSv/h, depending on altitude and geology. The current USA median across online stations is 0.120 µSv/h.

All countries → · Data and API

Data from the uRADMonitor open network. Dose rates are estimates and are not a substitute for official monitoring.