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RadNet

  • Nationwide Environmental Radiation Monitoring

    EPA's RadNet system monitors the nation's air, precipitation and drinking water for radiation.

Possible Delays in Data Display

Upgrades to our server system may result in occasional delays in RadNet data display. We are monitoring the system and taking corrective actions as needed. We apologize for any inconvenience.

RadNet has 140 radiation air monitors in 50 states and runs 24 hours a day, 7 days a week collecting near-real-time measurements of gamma radiation. Over time, RadNet sample testing and monitoring results reveal the normal background levels of environmental radiation.

RadNet Basics

radnet air monitor
 
  • Learn About RadNet
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RadNet Monitoring

Radnet map of monitor locations
 
  • Near-Real-Time and Laboratory Data by State
  • RadNet Sampling and Analyses Schedules
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Radiation-Related Information

  • EPA Radiation Home
  • International, Federal and State Government Environmental Radiation Monitoring Networks
Contact Us to ask a question, provide feedback, or report a problem.
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Last updated on February 22, 2022