If you’re in any province other than Mpumulanga, breath easy.

If you’re in Mpumalanga, maybe don’t.

According to an analysis of satellite imagery released by Greenpeace yesterday, the province “has the world’s deadliest air pollution”. That analysis of the satellite imagery shows that Mpumalanga suffers from the largest single area infected by the deadly air pollutant nitrogen dioxide.

Here’s Quartz:

Out of satellite data across six continents, the province in South Africa’s east emerged as “the world’s largest NO2 hotspot,” said Greenpeace Africa. The area is home to a dozen coal-fired power stations, owned and operated by South Africa’s national power supplier Eskom.

Greenpeace analyzed [sic] satellite images taken daily by the Copernicus Sentinel-5P from Jun. 1 to Aug. 31. Researchers measured the amount of trace gas in a vertical column the full height of the earth’s atmosphere…

Nitrogen oxide is also found in tobacco smoke leading World Health Organization head Tedros Adhanom Ghebreyesus to declare air pollution as “the new tobacco,” killing seven million people each year.

South Africa’s reliance on coal influences its emissions policies, allowing 10 times more nitrogen oxide emissions than China and Japan, according to Greenpeace. Despite the country’s potential for renewable energy, Eskom is only now beginning to make good on its renewable energy goals.

That would be because it is a state-run enterprise, and has thus been run into the ground by those seeking to enrich themselves at every turn.

The Mpumalanga town of eMalahleni (meaning ‘place of coal’) is notoriously bad, and the effects of the pollution on its residents is well documented:

In 2014, a study by environmental justice group GroundWork found that coal-fired electricity generation was responsible for more than half of hospital admissions and deaths due to respiratory illness in the region. Now, an analysis of weather patterns shows that wind carries the polluted air west to South Africa’s largest city Johannesburg, and the country’s capital Pretoria.

“Because South Africa’s coal-belts are hidden from view for the majority of South Africans, it can be easy to pretend that they don’t actually exist,” said Melita Steele, Greenpeace Africa’s climate and energy campaign manager “The reality is that coal extraction and burning has devastating impacts on the people living in the area.”