New Delhi, Jan. 11 -- The Congress on Sunday mounted a sharp attack on the Modi government over India's worsening air quality crisis, citing a new independent analysis that found nearly half of the country's cities suffering from chronic air pollution and accused the Centre of responding with what it called an "exceedingly ineffective and inadequate" policy framework.

In a statement, Congress general secretary (communications) Jairam Ramesh said a fresh analysis by the Centre for Research on Energy and Clean Air (CREA) had confirmed that air pollution in India is no longer a regional or seasonal problem but a "nationwide, structural crisis" that the government has failed to address meaningfully.

"Using satellite data, the study found that...