Jan AQI worse than last year’s: Why rain failed to wash away Delhi's pollution pain

Despite receiving 33% excess rainfall, January 2026 was more polluted than the previous year, with an average AQI of 307 compared to 305. The month experienced severe air quality days from January 17-19, a first in four years. While the last week saw improvement due to rain, adverse meteorology and high emissions contributed to the overall poor air quality.

Jan AQI worse than last year’s: Why rain failed to wash away Delhi's pollution pain
Despite receiving 33% excess rainfall, January 2026 was more polluted than the previous year, with an average AQI of 307 compared to 305. The month experienced severe air quality days from January 17-19, a first in four years. While the last week saw improvement due to rain, adverse meteorology and high emissions contributed to the overall poor air quality.