# University of the Witwatersrand scientists have developed South Africa’s first air-quality alert app to warn Johannesburg residents of rising pollution levels. The app uses data from hundreds of monitoring stations to send real-time alerts and health advice to residents. The development follows reports of increased respiratory issues and a strong sulphur smell across the city, with authorities investigating pollution sources from industrial and mining activity. Forestry, Fisheries and the Environment minister, Willie Aucamp, says investigations into sulphur emissions are ongoing.
Wits develops air pollution alert app amid Johannesburg smog spike