AirAQI provides you with the detailed information about air pollution, smog and some weather data, from all over the World. It also informs you about the health effects of the pollution and what cautions to take. The parameters include: PM 2.5, PM 10, NO2, CO, O3, temperature, humidity, pressure, wind speed. You can check the data from the nearest station, or search for any other place.
The app can be used to check air parameters and weather parameters on a daily basis, while traveling to another city, or abroad. You can also compare air quality from different cities, continents. The AQI stands for 'Air Quality Index' and is a unified measurement, used by government agencies (USA, Canada).
Information source: https://airnow.gov