SINGAPORE: Singapore residents are once again facing a rise in air quality after the country's Pollutant Standards Index (PSI) rose by 20 points in a 24 hour period through Friday morning. The increase in haze caused the government to warn residents that the air quality in the city was nearing an “unhealthy” level. According to the PSI report, on Friday morning, air quality was between 65 and 75, and could continue to rise. That is higher than the normal range of 0 to 50. Air quality in the 51 to 100 range places it in the “moderate” as anything above 100 in considered “unhealthy.” Government officials told Bikyamasr.com on Friday that the result of the rise in air pollution was largely due to the burning of land in Indonesia and it is unclear if wind patterns will bring more haze to the city. Southern Thailand and northern Malaysia were recently hit by haze and poor air quality earlier this month. The haze in Southern Thailand is reportedly being caused by forest fires in Sumatra. Malaysia has also been hit hard by the haze, especially their northern states close to the Thai border. “Sumatra has more than 200 hotspots that can catch fire during hot weather. Monsoon winds blow the smoke over the border to Peninsular Malaysia," Malaysia's State Health, Welfare, Caring Society and Environment Committee Chairman Phee Boon Poh told Bernama news agency this month. The new warnings over air standards come less than two months after the country was hit by a black cloud of poor air that saw the government tell residents in the country to remain indoors. The haze has been a major problem facing Malaysia and other Southeast Asian countries in recent years. The main culprit of this haze is the slash and burn practice by farmers and peat fires in Indonesia, experts say. But also in Malaysia, the government is not doing enough to reform farming practices, which Yussif Hassan, an environmental consultant in Selangor told Bikyamasr.com, “is a major issue that is seeing haze become more prominent in recent times." He argued that “the Malaysia government must work to end the practices that throw debris and dust into the air, because if we don't do this soon, it will debilitate the environment and people's health."