Investigations have been launched against almost 100 farmers across Haryana, while fines have been imposed on more than 300 Delhi is the second-most polluted city in the world on Tuesday, after only Lahore in neighboring Pakistan NEW DELHI: At least 16 farmers have been arrested in India’s northern state of Haryana for illegally burning paddy stubble to clear fields, a practice that stokes air pollution in the region around New Delhi at the onset of winter, authorities said on Tuesday. India’s national capital region battles pollution at this time each year as temperatures fall and cold, heavy air traps construction dust, vehicle emissions and smoke, much of which authorities say travels from the neighboring breadbasket states of Punjab and Haryana. Delhi, ranked the world’s most polluted capital for four years in a row by Swiss group IQAir, has closed its schools and halted construction projects for brief periods in the past as it looks to tackle the problem. Police in Haryana’s Kaithal region said that 22 complaints of stubble burning have been registered this year, and 16 people have been arrested. “Those arrested have been released on bail since this is a bailable offense,” said Birbhan, a deputy superintendent of police, who uses only one name. Investigations have been launched against almost 100 farmers across Haryana, while fines have been imposed on more than 300, local media reported. Delhi recorded “very poor” air on Tuesday morning, according to the Central Pollution Control Board (CPCB), with an air quality index (AQI) of 320. An AQI of 0-50 is considered good while anything between 400-500 poses health dangers. It was the second-most polluted city in the world on Tuesday, a live ranking on IQAir’s website indicated, after only Lahore in neighboring Pakistan. The environment ministry said Delhi’s daily average AQI was likely to stay in the ‘Very Poor’ category (300-400) in coming days due to unfavorable meteorological and climatic conditions. To curb Delhi’s pollution authorities have ordered water sprinkling on roads to tackle dust, increasing public bus and metro services and higher parking fees to discourage car use. Environmentalists say the measures are inadequate. “These are only emergency measures ... This air pollution mitigation needs a long-term comprehensive solution rather than these ad hoc measures,” said environmentalist Vimlendu Jha.