Air pollution that has swept across the country in the last week has resulted in more emergency calls to West Midlands Ambulance Service.
Over the last three days, more 999 calls relating to breathing problems and chest pain have been received by the trust.
Dr Andrew Carson, West Midlands Ambulance Service Director, said:" A prolonged period of these conditions poses real difficulties to those patients with emphysema, asthma and long term breathing problems.
“Air pollution and smog can make breathing difficult even for healthy individuals. That’s why we suggest people with respiratory illnesses should remain indoors as much as possible."
Breathing problems normally account for 11% of total 999 calls to the trust, but the weather conditions has seen this amount increase to 12%. Figures released by West Midlands Ambulance Service also reveal calls relating to chest pains have risen 2.5%, from 10.5%