Pollution levels in Uttar Pradesh surge every year in winter season.
Air quality in Agra is in 'poor' category.
Thick blanket of smog enveloped Taj Mahal.
Last year, air purifiers were deployed at Taj Mahal to combat pollution.
Pollution levels in Uttar Pradesh surge every year in winter season.
Air quality in Agra is in 'poor' category.
Thick blanket of smog enveloped Taj Mahal.
Last year, air purifiers were deployed at Taj Mahal to combat pollution.