Overview

• Delhi’s July average AQI sank to 78, its lowest in seven years and in the satisfactory range for 29 of the month’s 31 days.
• July had no days in the poor or very poor categories, marking the first July in a decade with consistently satisfactory air quality.
• The January–July average AQI dropped to 184 from 204 in 2024, reflecting sustained reductions in PM2.5 and PM10 levels.
• Officials credit the improvement to a multi-tiered governance framework deploying real-time monitoring, mechanised road sweeping, dust suppression and bio-mining.
• Record cleanliness occurred despite lower rainfall than in worse years, underscoring the impact of policy measures and favourable wind patterns.