河北全部设区市PM2.5浓度首次均达到国家空气质量二级标准

Group 1 - The average PM2.5 concentration in Hebei from January to August was 30 micrograms per cubic meter, a year-on-year decrease of 18.9% [1] - All prefecture-level cities in Hebei achieved the national air quality secondary standard for the first time, with cities like Shijiazhuang, Handan, Tangshan, Xingtai, Baoding, and Hengshui reaching this standard for the first time in history [1] - The proportion of good air quality days in Hebei reached 77.1%, an increase of 9.5 percentage points year-on-year, while the proportion of heavily polluted days was 0.7%, a decrease of 0.9 percentage points [1] Group 2 - Hebei has made significant progress in air pollution control, particularly in energy structure, with a total planned capacity for pumped storage of 29.97 million kilowatts, ranking first in the country [2] - The installed capacity for wind and solar power reached 138 million kilowatts, accounting for 72.1% of the total power installed capacity, placing Hebei among the top in the nation [2]