Air quality improves in Dhanbad, pollution sources change in Kolkata

Air quality in Dhanbad has improved, with PM10 levels dropping significantly.

Kolkata's air pollution sources changed after the pandemic.

PM10 has less dust but more pollution from cooking, industry, and vehicles.

PM2.5, which is more harmful, shows increased pollution from industry and cooking, but less from dust.

Authorities are working to address pollution in both cities through regulations, waste management and cleaner fuels.