四川最新空气质量预测：2月上旬有污染风险

Group 1 - The core viewpoint indicates that the air quality in the Sichuan Basin is expected to improve gradually after a period of light to moderate pollution risk due to weak cold air activity and cloudy weather in early February [1][2][3] Group 2 - From February 2 to 4, there is a risk of light pollution in some cities, with individual cities facing moderate pollution risk on February 5 to 6 [2] - The northeastern region of Sichuan is expected to experience similar pollution risks, with a predominant good air quality forecast from February 7 to 14 [2] - The southern region of Sichuan also shows light pollution risks from February 2 to 6, with a return to good air quality expected from February 8 to 15 [2] Group 3 - The weather from February 2 to 5 will be mainly cloudy with increased humidity, leading to poor dispersion conditions and heightened pollution risk [3] - Cold air is expected to improve air quality from February 6 to 7, although western and southern cities may still face significant pollution risks [3] - Between February 8 and 12, intermittent cold air will help maintain good air quality, but from February 13 to 15, reduced wind speeds may lead to increased pollution risks again [3]