air quality index

Experts explain that Hanoi has a higher air pollution index at night, mainly due to the heat and calm winds that make it difficult for the air to diffuse to rise.

How to know the air you are breathing is clean, quality? In fact, we used to rely on our own feelings.

People in northern China, especially the capital of Beijing, are about to catch a haze of dangerous smog over the weekend.

Through the wireless internet, users will be able to download support for devices like the iPhone or iPad and synchronize with the Netatmo.