元旦假期首日北京晴冷在线 最低气温零下10℃需注意防寒保暖

Group 1 - The core viewpoint of the articles is that Beijing is experiencing extremely cold weather as it enters the New Year, with temperatures dropping significantly below freezing [1][2]. - The highest temperature today is forecasted to be 2°C, while the lowest could reach -10°C, indicating a severe cold snap [2]. - Specific areas in Beijing recorded temperatures as low as -19.2°C, highlighting the intensity of the cold weather [1]. Group 2 - The weather for the first two days of the New Year is expected to be mainly clear, but with significant wind chill effects due to a north wind [2]. - The public is advised to take precautions against the cold, emphasizing the need for proper clothing to prevent cold-related health issues [2].