The figures, by King’s College London and UK100, suggests an “immediate, short-term and avoidable” impact of high air pollution.
In Nottingham, one of the cities studied, this relates to three more cardiac arrests and eight more strokes every day.
The numbers are based on ambulance call-outs and don’t include incidents while patients are already in hospital.
Simon Stevens, chief executive of NHS England, said that it was clear that the climate emergency was in fact also a health emergency and that it means that the NHS needs to cut its own greenhouse gas emissions.
He said: “Since these avoidable deaths are happening now – not in 2025 or 2050 – together we need to act now,”
“For the NHS that is going to mean further comprehensive action building on the reduction of our carbon footprint of one-fifth in the past decade.