11月，东北平原部分地区因秸秆焚烧等原因，导致大范围烟霾影响；京津冀及周边、苏鲁交界和长三角等东部地区出现雾霾，PM2.5和PM10同比上升。 11月下旬迎来3次较大范围的沙尘天气，其中26日沙尘在影响西北多地和晋冀鲁豫后，南下影响到安徽、江苏、上海、浙江、湖北等地。沙尘强度强、影响范围广，且出现滞留和回流。专家分析称，主要是因为近期北方冷空气、大风天气活跃，沙源地频繁起沙，并被冷空气大风带着向东向南传输，而且近日中东部地区雨雪稀少，天气干燥，缺少降水的沉降作用，天气条件利于沙尘南下深入。

2025年10月全国气候呈现“前暖后冷”特征，上旬气温创历史同期新高，中下旬转为偏低。北方大部地区提早入冬，全国降水达历史第二多，秋雨过程显著。 受不利气象条件、区域排放量升高以及秸秆燃烧等因素的影响，10月下旬京津冀及周边地区遭遇连片污染过程。本次污染过程自23日起，区域中南部持续处于污染状态，形成区域连片污染团。弱偏南风、高湿、静稳以及混合层大幅压缩等气象条件，造成华北平原区域传输，扩散条件非常不利，是导致污染物积聚的关键因素。 同样受到排放和不利气象条件影响，本月东北平原和汾河谷地也发生较重污染，东北平原部分站点出现爆表。

9月以来全国大部地区气温偏高，全国平均降水量较常年同期偏多30%以上，共发生6次暴雨过程。 9月生成和登陆台风多，连续5个台风登陆或影响华南地区，其中18号台风“桦加沙”先后三次登陆。 气象扩散条件显著影响大气污染物扩散，9月份空气质量如何？详见9月空气动态视频。

2025年8月，副热带高压强势控场，总体华北多雨，黄淮干旱，华东高温，华南多台风活动，气象形势对污染扩散条件产生显著影响。 天帮忙，人努力，8月，全国176座城市PM2.5月均浓度达到历史同期最低值。其中京津冀及周边地区30城市创下新低，长三角地区25城市新低，汾渭平原10城市新低，长江中游城市群22城市新低。 8月低值带动1-8月PM2.5累积浓度下降，全国共99城市达到历史同期新低。北京PM2.5累积浓度25.6微克/立方米，创1-8月历史同期新低。 华北北部雨季超长，北京降雨创下历史同期新高；长三角持续高温，江浙沪夏季平均气温为历史同期第二高，杭州和上海在8月下旬出现“高温全勤”。

7月全国平均气温23.6℃，气温为历史同期最高，气候显著偏暖，极端天气频发：48个国家站日最高气温突破历史极值，极端高温天气频发；共出现10次区域暴雨过程，其中华北和东北地区的较强降水过程累计降水量大、极端性强；台风生成数（7个）及登陆数（3个）均显著偏多，台风“韦帕”累积雨量大，“竹节草”登陆后长时间影响苏皖等地。 气象扩散条件显著影响大气污染物扩散，7月份空气质量如何？详见7月空气动态视频。

In June 2025, China's air quality reflected typical summer patterns, with high temperatures driving ozone formation and rainfall helping suppress pollution. In early June, northerly winds and thunderstorms improved air quality across northern China. However, widespread elevated ozone levels emerged in North China, the Huang-Huai region, and northern Yangtze River Delta due to persistent heat and sunshine, with pollution bands extending northward into the Beijing-Tianjin-Hebei region. Meanwhile, consistent rainfall kept air clean in the south. Mid-month, ozone exceeded standards for three consecutive days in Beijing-Tianjin-Hebei. Typhoon "Butterfly" brought heavy rainfall to South China, cleansing the air, but southerly winds pushed ozone levels back up in the Yangtze River Delta, Central Plains, and even the Chengdu Plain, where exceedances were also recorded. In late June, the northward shift of the rain belt ended the heatwave. While ozone remained elevated in Shanghai due to sustained heat, cloudy and rainy conditions effectively suppressed pollution across most of central and eastern China. However, ozone continued to spread from the Bohai Rim into the Northeast Plain.

In early May, cyclonic activity over western China and Mongolia triggered multiple waves of dust storms sweeping east and south, affecting Shaanxi, Gansu, Ningxia, Inner Mongolia, Hebei, and Henan. The storms further impacted the Guanzhong Plain, Hubei, Shanxi, Anhui, Zhejiang, and the Sichuan Basin, with light haze and dust pollution observed along the foothills of North China. By mid-May, rising temperatures increased ozone formation potential. Some monitoring sites in northern North China, the Yangtze River Delta, the Pearl River Delta, and the Chengdu-Chongqing region recorded early exceedances. Overall air quality remained good across central and eastern China, with only slightly elevated particulate levels in eastern Inner Mongolia. In late May, another round of dust storms hit Gansu, Ningxia, and southern Xinjiang, causing short-term moderate to heavy PM10 pollution. At the same time, persistent hot and humid weather fueled widespread light ozone pollution across sunny areas—from North China and the Beijing-Tianjin-Hebei region to central and southern Northeast China, northern Yangtze River Delta, and the Northeast Plain. Afternoon ozone spikes became frequent in North China. Fortunately, increased rainfall kept air quality in South China generally good, and intermittent northerly winds brought temporary improvements to the North.