Delhi Records Poorest February Air Quality in Three Years with Ozone as Main Pollutant

Delhi experienced its poorest air quality in February over the past three years, with an average AQI of 237 in 2026, higher than previous years. The city recorded 20 'poor' and two 'very poor' air quality days, with ozone identified as the dominant pollutant on 21 of 27 days. Experts note ozone forms as a secondary pollutant from nitrogen oxides under sunlight. Exposure to high ozone levels can cause respiratory issues, especially for vulnerable groups.