TIROS-1 was the first artificial satellite used to detect and photograph weather systems from space.
The Television Infrared Observation Satellite 1, known as TIROS-1, was launched by the United States on 1 April 1960. It carried television cameras that returned images of cloud cover, demonstrating that satellites could provide valuable observations over oceans and remote regions where ground-based weather stations were sparse. Its mission lasted only 78 days, but it proved the practical value of space-based meteorology.
Before TIROS-1, forecasters relied mainly on surface stations, radiosondes, aircraft, radar, and visual observations. Satellite imagery added a large-scale view of cloud patterns and storm structure, transforming weather analysis and tropical-cyclone monitoring. TIROS-1 was not the first artificial satellite overall: the Soviet Union’s Sputnik 1 holds that distinction. Later satellite programmes added infrared and microwave instruments, allowing observations both day and night and through some cloud layers.