Oldhamers warned to limit activity in another air pollution alert

This is due to the fact concentrations of ozone are expected to be higher than recommended.

It comes just one week after another air pollution alert.

Higher concentrations of ground-level ozone can lead to asthma attacks and inflammation.

It can form when emissions from human sources – such as industrial facilities or vehicle exhausts – chemically react in the presence of sunlight, especially on hot sunny days.

Advice from the Department for Environment Food & Rural Affairs (DEFRA) states: “Adults and children with lung problems, and adults with heart problems, who experience symptoms, should consider reducing strenuous physical activity, particularly outdoors.”

However, the general population are advised they can continue to enjoy their usual outdoor activities.

A text message showing the alert for moderate air pollution

Previous research has also suggested that those inside cars are exposed to a greater concentration of air pollution than those outside them, such as pedestrians.

Air pollution in much of Oldham, as well as most of Greater Manchester, is forecast to be 4, or ‘moderate’, on the daily air quality index.

The map shows much of Greater Manchester is subject to a 'moderate' air pollution alert

Clean Air Greater Manchester say air pollution contributes to at least 1,200 early deaths in Greater Manchester each year, with an estimated £5.3 billion health and social care cost by 2035.

In March, a public consultation was announced after the delay of Greater Manchester’s Clean Air Zone – with £186,000 spent on stickers to cover up out-of-date signs.