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Delhi's dismal air quality and comfort conditions
A new study found that Delhi barely gets any time when you can enjoy both clean air and comfortable outdoor weather—just 3% of the year.
Out of around 2,210 hours with nice temperatures (18°C-31°C), almost all are spoiled by high pollution levels.
Bengaluru gets most comfortable hours with decent air quality
Bengaluru stands out with over 8,100 hours of decent air quality and hardly any overlap between heat and pollution.
Ahmedabad does better than Delhi too, while Chennai faces nearly the same struggle—88% of its "comfortable" hours are polluted.
How to improve indoor air quality
The study says old-school building ventilation just isn't enough anymore.
It suggests using Personalized Environmental Control Systems (PECS), which filter air for each person and help save energy—cutting ventilation power use by up to 70%.