The invisible threat in Gauteng’s air – and why every family should be paying attention

For many Gauteng families, creating a better future means choosing the right schools, building successful careers and investing in homes in desirable neighbourhoods. But according to air pollution researcher Dr Jamie Kelly, one of the biggest threats to that future is something most of us can’t even see.

Speaking to HOT 102.7, Dr Kelly, who leads the Health Impact Assessment team at the Centre for Research on Energy and Clean Air (CREA), says Gauteng regularly ranks among the most polluted regions in the world at certain times of the year – despite the fact that the air often appears perfectly clear.

“Air pollution isn’t always visible,” he explains. “Just because you can’t see it doesn’t mean the air is clean.”

Using sophisticated atmospheric modelling, Dr Kelly’s team tracks how emissions from power stations, mining, industry and traffic move through the atmosphere before calculating their impact on human health.

The findings are sobering.

Across South Africa, air pollution contributes to more than 40,000 premature deaths every year, linked to conditions including heart disease, stroke, lung cancer and diabetes. It also contributes to the deaths of around 1,000 children under the age of five, while increasing the risk of asthma, bronchitis, premature births and low birth weight.

For Gauteng residents, the challenge is compounded by geography. Pollution generated within the province combines with emissions drifting in from neighbouring regions, particularly from coal-fired power stations on the Highveld. Some of these sulphur dioxide emissions are so vast they can even be detected by NASA satellites from space.

Children are among the most vulnerable. Because their lungs and immune systems are still developing, exposure during childhood can have lifelong consequences.

While individuals can help by reducing waste burning and other household emissions, Dr Kelly says meaningful improvements depend on stronger enforcement of environmental regulations and faster action to reduce emissions from major industrial polluters.

For families investing in healthier lifestyles, better education and brighter futures, clean air is an essential part of the equation. It’s an invisible asset that protects not only today’s quality of life, but the long-term health of the next generation.