Table 2.
Particulate matter PM2.5 and PM10 concentrations recorded in Milan during the two time periods (pre-lockdown and beyond lockdown).
| January–February 2020 | March–April 2020 | |||
|---|---|---|---|---|
| Daily average particulate matter PM2.5 (μg/m3) | Mean value: 112.75 ± 38.5 | The range 30–189 | Mean value: 61.89 ± 18.03 | The range 34–102 |
| Daily average particulate matter PM10 (μg/m3) | Mean value: 46.78 ± 17.7 | The range 10–100 | Mean value: 24.78 ± 11.25 | The range 8–65 |
| Daily maxima particulate matter PM10 (μg/m3) | Mean value: 60.63 ± 29.6 | In the range 11–145 | Mean value: 44.67 ± 21.4 | In the range 15–91 |
| Daily Air Quality Index | Mean value: 43.8 ± 23.8 | In the range 15–114 | Mean value: 30.55 ± 11.81 | In the range 16–69 |