华北南部黄淮江汉等地霾逐渐减弱消散

Core Viewpoint - The air quality in various regions of China is expected to improve due to cold air and precipitation, but conditions will deteriorate in some areas starting February 1, leading to light to moderate haze [1][2][4]. Group 1: Air Quality Forecast by Region - Beijing-Tianjin-Hebei and Surrounding Areas: Air diffusion conditions will improve on the night of January 29, with haze gradually dissipating. However, from February 1, conditions will worsen, resulting in light to moderate haze [2]. - Yangtze River Delta: Most areas will have good air diffusion conditions with no significant haze expected [3]. - Fenwei Plain: Haze will diminish starting January 29 due to cold air and precipitation, but conditions will worsen from February 1, leading to light to moderate haze [4]. - Central China: Good air diffusion conditions are expected, but light haze may occur in parts of Hubei and Hunan from January 29 to 30 due to local accumulation and upstream transport [5]. - Pearl River Delta: Most areas will have good air diffusion conditions with no significant haze [6]. - Southwest Region: Eastern areas will experience more precipitation, leading to good air clearing conditions, although light haze may occur in parts of western and southern Sichuan during dry intervals [7]. - Northeast Region: Active cold air will result in good air diffusion conditions with no significant haze [8]. - Northwest Region: The northern slope of the Tianshan Mountains will have average air diffusion conditions, with light to moderate haze and localized heavy haze. The southern Xinjiang basin will experience more floating dust [9].