In November, sandstorms and haze occurred together, accompanied by frequent strong winds and cold waves, which caused significant fluctuations in air quality. The number of good air quality days in the Beijing-Tianjin-Hebei region and surrounding areas increased by 13.3% compared to the previous year. In addition, the monthly average PM2.5 concentration in both the Yangtze River Delta and Pearl River Delta regions rose year-on-year. #BlueMap# takes you through an hourly dynamic review of November’s air quality.

In late October, widespread smog in northern China sparked public concern. It covered a large area and arrived earlier than usual in previous autumn and winter seasons. A total of 20 cities across Hebei, Henan, Shandong, Tianjin, and Beijing issued heavy pollution alerts. #BlueMap# presents an hourly update to review this October's air quality.

The past month, as summer gave way to autumn, saw a shift from high temperatures and ozone pollution at the start to strong winds and elevated particle pollution by the end. #BlueMap# takes you through September with hourly updates.

This August, the heat and humidity persisted, with ozone levels in 168 key cities rising by 32.9% year-on-year. Let’s take a look at the hourly dynamics with #BlueMap# to review this August.

This July, the heat was relentless! The first half of the month saw record-breaking high temperatures, with July 3rd, 4th, and 6th setting global temperature highs, possibly making it the hottest week in 100,000 years. Ozone pollution was a significant concern. Later in the month, influenced by typhoons, both the north and south experienced rainfall. Hebei and Beijing's Taihang Mountain region saw rare, continuous heavy rains, resulting in severe flooding. Let’s take a look at July through hourly updates on #BlueMap.

This June, the most talked-about topic online was the intense heat! The harm caused by high temperatures includes not only heatstroke but also the invisible threat of ozone pollution. #BlueMap's hourly updates clearly show the afternoon ozone pollution pulses in Central and Eastern China. Let's take a look back at the air quality of June together.

This May, frequent sandstorms and record-breaking heatwaves swept across many regions, with ozone pollution exacerbated by the dust storms. Despite this, after a significant rebound in the first quarter, PM2.5 concentrations in key areas have been declining month by month. As we approach World Environment Day, #BlueMap# presents the hourly air quality changes of May.