PM2.5 mobile phone real-time query (national air quality query) For Android

PM2.5 real-time query software introduction: Query real-time air pollution index PM2.5 information in 120 cities across the country through your mobile phone. The content includes: 24-hour real-time air pollution index PM2.5 data from tens of thousands of monitoring stations in 120 cities across the country and the air quality index of each city in the latest week. You can make appropriate decisions based on local air pollution conditions: whether outdoor activities are suitable and whether you need to wear a mask.

Q: What is Air Quality Index?

Answer: The Air Quality Index (AQI) is an index that quantitatively describes air quality conditions. The larger the value, the more serious the air pollution is and the greater the harm to human health. The main pollutants involved in air quality assessment are fine particulate matter (pm2.5), inhalable particulate matter (pm10), sulfur dioxide (SO2), nitrogen dioxide (NO2), ozone (O3), and carbon monoxide (CO).

Q: What is PM2.5?

Answer: PM2.5 refers to particulate matter in the atmosphere with a diameter less than or equal to 2.5 microns, also known as particulate matter that can enter the lungs. Its diameter is less than 1/20 the thickness of a human hair. Although PM2.5 is only a small component of the earth's atmosphere, it has an important impact on air quality and visibility. Compared with coarser atmospheric particulate matter, PM2.5 has a small particle size, is rich in a large amount of toxic and harmful substances, stays in the atmosphere for a long time, and is transported over a long distance, so it has a greater impact on human health and the quality of the atmospheric environment. When atmospheric particulate matter is inhaled into the human body, it will directly enter the bronchial tubes, interfere with gas exchange in the lungs, and cause diseases including asthma, bronchitis, and cardiovascular disease.