Residents raise concerns over air quality
Residents in several areas of Johannesburg have reported an unpleasant smell lingering in the air since the weekend, sparking renewed concern about air pollution in the city.
Numerous people took to social media to complain about the persistent odour, with many describing it as similar to rotten eggs — a smell commonly associated with sulphur-based pollutants.
While the exact cause has not yet been confirmed, the reports have prompted renewed attention to the region’s long-standing air quality challenges.
The province of Gauteng is among the most industrialised areas in South Africa and frequently records elevated levels of particulate pollution.
Research by the Centre for Research on Energy and Clean Air suggests that air pollution linked to fine particulate matter contributes to roughly 16000 premature deaths each year in the province.
Fine particles such as PM2.5 and PM10 can penetrate deep into the lungs and bloodstream, increasing the risk of respiratory and cardiovascular diseases.
Pollution may travel long distances
Monitoring data from air quality sensors operated by the Department of Forestry, Fisheries and the Environment shows that several areas of Johannesburg have experienced unhealthy pollution levels in recent years.
For instance, readings from a monitoring station in Jabavu have occasionally recorded daily PM2.5 concentrations above 300 micrograms per cubic metre.
This level significantly exceeds the 75 micrograms per cubic metre daily guideline recommended by the World Health Organization in its 2021 air quality standards.
City officials have previously linked similar sulphur-like odours to pollution drifting into Gauteng from other provinces.
According to the City of Johannesburg, polluted air can travel hundreds of kilometres from industrial regions such as the Highveld Priority Area and the neighbouring province of Mpumalanga.
These regions host numerous coal-fired power stations and petrochemical plants that release emissions capable of travelling long distances under specific atmospheric conditions.
Such events tend to occur more frequently between January and March when weather patterns allow polluted air masses to move across provincial boundaries.
Authorities have advised residents to remain indoors when the smell is strongest and to limit strenuous outdoor activity until conditions improve.
Officials say they are continuing to monitor pollution levels and atmospheric conditions that may contribute to these odour events affecting parts of the city.
Source: IOL
