There is scientific evidence that air pollution and hot weather increase the risk of cardiovascular disease hospital admissions - and may even end in death.
We looked at the relationship between temperature, air pollution and hospital admissions for cardiovascular disease in Cape Town - where data quality was good.
The daily PM₁₀ levels exceeded the daily World Health Organization (WHO) air quality guideline on 90 days of the 2,131 days.
In this study PM₁₀ and Tapp levels were positively correlated - the air contained more of these particles on warmer days.
When air pollution levels were higher - on warm or cold days - people aged 15-64 years were the group most likely to be admitted to hospital for cardiovascular disease.
