Delhi air 'moderate'; study says exposure to pollution heightens Covid risk

The city's Air Quality Index (AQI) was 142 at 8 am, according to SAFAR

Delhi's air quality was 'moderate' Thursday morning as research suggested that long-term exposure to ambient air pollution may heighten the risk of Covid-19 infection. 

The city’s Air Quality Index (AQI) was 142 at 8 am, according to the Ministry of Earth Sciences' air quality forecast agency SAFAR. Readings below 50 are considered safe, 51 and 100 is 'satisfactory' and anything above 300 is considered hazardous or 'severe'.

Air quality slipped to 'moderate' on Wednesday after being 'satisfactory' for a couple of days after heavy rains lashed the capital over the weekend. 

A study, published online in the journal Occupational