From the Website: "[This website allows users to estimate airborne decay of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Users can adjust] sliders to select the UV [ultraviolet] index, temperature and relative humidity of interest. Information on how long SARS-CoV-2 would be expected to remain stable in aerosols (airborne) will be displayed in the table[.] Users can find the environmental conditions for a specific location by accessing general weather resources online."
U.S. Department of Homeland Security: https://www.dhs.gov/