uRADMonitor is a global network of environmental sensors. The map above shows live radiation levels and air quality measured by stations installed in homes, schools, companies and public institutions.
All readings come from physical uRADMonitor devices, not from models or estimates. Each station reports its own location, and the data is open through a public API.
The map shows live readings from uRADMonitor sensors installed around the world. Depending on the model, a station measures ionizing radiation, particulate matter (PM1, PM2.5, PM10), CO2, VOC, noise, temperature, humidity and pressure. Click any sensor to see its current values and history.
Outdoor background radiation is typically between about 0.05 and 0.20 µSv/h. It varies with altitude, local geology and weather, and short increases during rain are normal. A reading that stays well above the local baseline is worth investigating.
CPM (counts per minute) is the raw number of particles detected by the Geiger tube. µSv/h is the estimated dose rate. The conversion factor depends on the tube type, so CPM values from different detectors are not directly comparable, while µSv/h values are.
Each station sends new measurements every few minutes. The map refreshes automatically, and the full history is available through the uRADMonitor API.
Every uRADMonitor device appears on the map once it is connected. You choose the location and whether it is public. See the available models on the Products page.