”This is the first such smog tower in the country. It’s a new technology. We have imported it from the US. The structure will suck polluted air from above and release clean air from below. It will purify 1,000 cubic metres of air per second,” Chief Minister Arvind Kejriwal told reporters.
Experts, however, feel smog towers may provide immediate relief from air pollution in a small area but they are a costly quick-fix measure with no scientific evidence to back their efficacy in the long term.

Governments should instead address root causes and promote renewable energy to tackle air pollution and reduce emissions, they said.