Delhi-NCR slipped into the “poor” air quality category during an intense heatwave, with dust particles and PM10 emerging as the dominant pollutants across the region.

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• Delhi-NCR recorded poor air quality despite extreme summer temperatures near 45°C.
• Authorities imposed Stage 1 of the Graded Response Action Plan (GRAP) in the region.
• Air Quality Index in Delhi crossed 200, entering the “poor” category.
• Nearby cities like Noida, Ghaziabad and Greater Noida also recorded poor AQI levels.
• PM10 dust particles emerged as the main pollutant during the summer season.
• Unlike winter pollution, summer pollution is mainly driven by dust rather than stubble smoke.
• Heatwave conditions and strong dry winds increased dust concentration in the atmosphere.
• Construction dust, road dust and dry soil contributed significantly to PM10 levels.
• Central Pollution Control Board monitored AQI levels across NCR cities.
• Experts said extreme heat can worsen air quality by trapping pollutants near the surface.
• GRAP Stage 1 includes measures to control dust and reduce pollution sources.
• Authorities may increase water sprinkling and enforce stricter dust management rules.
• Poor air quality during heatwaves increases health risks related to breathing and lungs.
• Children, elderly people and respiratory patients are more vulnerable during such conditions.