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Rain brings immediate relief to Delhi’s air quality after years of struggle

Published July 10, 2026 at 10:34 PM UTC

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In late May 2026, Delhi experienced a significant improvement in air quality following heavy pre-monsoon showers. The city's Air Quality Index (AQI) plummeted from an average of around 156 during the peak heatwave to a clean 85 after the rainfall. This marked a drastic reduction in pollution levels, providing residents with much-needed respite. The improvement was attributed to a natural process known as atmospheric scavenging, where falling raindrops collide with suspended pollutants, effectively trapping microscopic dust and pulling it down to the ground. This mechanism scrubbed the skies clean, offering the capital its most breathable day since October 8. Prior to the rain, dust storms had worsened pollution levels, but the subsequent rainfall successfully washed away the toxic particles. The rain also led to a drop in night temperatures, providing thermal relief to the residents. This event underscored the significant impact that natural weather patterns can have on urban air quality, offering a temporary but vital relief from the persistent pollution that Delhi has struggled with for years.