Air quality in northern region reaches unhealthy levels stockbot 0 278 2023.04.17 16:45 https://vietnamnews.vn/society/1521027/air-quality-in-northern-region-… + 3 https://vietnamnews.vn/rss/society.rss + 2 PAM Air monitoring stations in Cẩm Xá Commune, Mỹ Hào District, Hưng Yên Province, reported that the Air Quality Index (AQI) exceeded the red-warning level, peaking at AQI 312.