Ozone spikes in Haryana: Ballabhgarh ranks among India’s worst hotspots as 12 stations breach standards
TNN / Jun 02, 2026, 15:29 (IST)
Haryana is emerging as an ozone hotspot, with 12 out of 30 monitoring stations exceeding national standards in May. Nathu Colony in Ballabhgarh recorded the seventh-highest ground-level ozone concentration in India. This secondary pollutant, formed by sunlight-driven reactions, poses a growing summer air quality challenge.