In its daily update of air quality in the Principality, the Government said on Monday, August 8, that it was ‘poor.’

The main cause of the poor air quality is ground-level ozone, a combination of nitrogen oxides (NOx) and volatile organic compounds (VOCs) heated by sunshine.

VOCs are found in petrol. The main source of the pollutant is vehicle exhausts.

Emissions from vehicles are increased in traffic jams, for which Monaco is notorious, especially in the summer months.

High ozone levels can cause breathing difficulties, throat irritation and headaches.

According to the Government, the poor air quality is set to continue at least through Wednesday.