What caused the sudden spike in AQI in Delhi-NCR?
Dust pollution in Delhi surged overnight, pushing AQI above 200 into 'poor' category, with visibility dropping sharply due to strong, dust-laden winds. According to IMD, strong, dust-laden winds blew across Palam area near IGI Airport between 10 pm and 11:30 pm, reducing visibility drastically. Post-midnight, wind speed dropped significantly to 3–7 km/hr, allowing dust to linger in atmosphere.