Amid Delhi’s severe air pollution, several smaller cities have demonstrated workable, low-cost solutions that significantly cut particulate levels through green spaces, waste reform, clean mobility, and emission control.
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• Smaller cities cut pollution with focused, local measures
• Tirunelveli urban forests lowered PM2.5 by 15–18 points
• Solapur green school corridors improved AQI by ~10%
• Bikaner rainwater+green rooftop rules cut PM10 by ~8%
• Ujjain waste segregation, composting cut PM10 by 12%
• Guntur green islands saw 20% drop in particulate matter
• Agartala pond restoration improved AQI by 12–14 points
• Bilaspur e-rickshaws cut PM2.5 by 10–15 points on key routes
• Fatehpur cleaner stoves reduced evening pollution by 14%
• Surat emission trading cut industrial emissions by 20–30%
• Indore’s sweeping, repairs, trees cut PM10 by 40% since 2017
• Lessons: persistent local action, community participation, realistic planning





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