Values ​​taken for the main air pollutants

Historical series since 2004 of the values ​​detected for the main air pollutants: fine particles, nitrogen dioxide and ozone. Fine dust, called PM10 (diameter less than 10 µm), are polluting particles present in the air that can be inhaled and penetrate the upper respiratory tract. The higher the concentration of fine particles in the air, the greater the harmful effect on the health of the population. The PM10 concentration thresholds, calculated on a daily and annual time basis, are established by Legislative Decree 155/2010: the annual limit value for the protection of human health is 40 µg/m3 while the daily limit is 50 µg/m3 not to be exceed more than 35 times/year. Nitrogen dioxide is a toxic gas that irritates the mucous membranes and is responsible for specific pathologies affecting the respiratory system (bronchitis, allergies, irritations). Among the emission sources, vehicular traffic has been identified as the one that contributes most to the increase in levels in the air. The limit value of the concentration of nitrogen dioxide for the protection of human health calculated on an annual time basis and established by Legislative Decree 155/2010 is 40 µg/m3. Ozone is a very toxic pollutant for humans, the effects caused by ozone range from irritation to the throat and respiratory tract to burning eyes; higher concentrations of the pollutant can lead to alterations in respiratory functions and an increase in the frequency of asthmatic attacks, especially in sensitive subjects. Ozone is also responsible for damage to vegetation and crops. The assessment of the status of the indicator is based on the days of exceeding the long-term target threshold for the protection of human health of 120 µg/m3, calculated as the daily maximum of the 8-hour moving average and the maximum number of exceedances allowed in a year is 25. Original data from http://www.arpalombardia.it This dataset was released by the Municipality of Milan. The path to use to find the original dataset on sisi.comune.milano.it is: sisi.comune.milano.it - ​​Environment and Mobility - Environment - Air Pollution