A LocalCircles survey revealed Thursday that three out of four households in Delhi-NCR are experiencing health effects from toxic air, with residents reporting symptoms like sore throat, cough, burning eyes, headaches and sleep disturbances.

An analysis of CPCB data showed that post-Diwali, PM 2.5 levels have touched 488 micrograms per cubic metre, the highest in five years and over three times the pre-festival level of 156.6 micrograms per cubic metre. Pollution levels peaked during Diwali night October 20 and the early next morning.

The survey, based on over 44,000 responses from residents across Delhi, Gurugram, Noida, Faridabad, and Ghaziabad, found that 42 per cent of the households reported that one or more members were suffering from sore throat or cough, while 25 per cent said fa

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