Table 5.
Pollutant concentration, average rainfall, wind speed, and temperature data of Coimbatore
| Months | Concentration of pollutants (µg/m3) | Meteorological parameters | |||||
|---|---|---|---|---|---|---|---|
| PM2.5 | PM10 | NO2 | SO2 | Rainfall (mm/day) | Wind speed (m/s) | Temperature (°C) | |
| Jan-20 | 37.38 ± 9.45 | 50.73 ± 14.45 | 40.44 ± 21.07 | 7.93 ± 2.33 | 0.14 | 1.66 | 23.17 |
| Feb-20 | 39.75 ± 6.59 | 52.43 ± 10.34 | 34.92 ± 15.95 | 10.71 ± 2.33 | 0.11 | 1.97 | 25.21 |
| Mar-20 | 32.88 ± 8.73 | 44.38 ± 16.10 | 47.31 ± 11.19 | 8.04 ± 1.06 | 0.5 | 1.45 | 28.39 |
| Apr-20 | 23.38 ± 7.06 | 28.18 ± 13.84 | 64.11 ± 12.41 | 6.51 ± 0.71 | 1.23 | 1.39 | 29.21 |
| May-20 | 22.73 ± 6.39 | 6.16 ± 9.27 | 29.25 ± 15.84 | 33.95 ± 0.41 | 2.19 | 1.98 | 27.81 |
| Jun-20 | 14.57 ± 3.06 | 21.19 ± 5.09 | 42.52 ± 5.37 | 5.96 ± 0.42 | 3.64 | 3.1 | 25.1 |
| Jul-20 | 23.15 ± 10.02 | 33.19 ± 12.61 | 19.49 ± 15.14 | 3.97 ± 2.01 | 7.52 | 2.45 | 23.9 |
| Aug-20 | 16.54 ± 6.17 | 24.06 ± 8.57 | 30.85 ± 5.38 | 6.37 ± 0.36 | 6.35 | 2.87 | 23.87 |
| Sep-20 | 17.43 ± 5.26 | 27.96 ± 4.74 | 16.74 ± 7.75 | 6.53 ± 0.37 | 6.45 | 2.55 | 23.45 |
| Oct-20 | 27.68 ± 9.03 | 38.07 ± 13.15 | 19.57 ± 4.51 | 6.48 ± 0.38 | 5.44 | 1.83 | 23.69 |
| Nov-20 | 35.71 ± 14.96 | 40.76 ± 14.77 | 22.49 ± 5.36 | 9.95 ± 3.69 | 5.3 | 1.59 | 23.19 |
| Dec-20 | 45.84 ± 17.57 | 51.41 ± 18.67 | 14.70 ± 5.18 | 15.62 ± 1.51 | 2.3 | 1.92 | 21.69 |
| Jan-21 | 40.49 ± 17.23 | 51.07 ± 15.73 | 17.12 ± 3.41 | 16.38 ± 1.84 | 3.57 | 1.86 | 21.94 |
| Feb-21 | 46.58 ± 10.27 | 49.15 ± 10.82 | 14.72 ± 1.93 | 17.47 ± .96 | 0.75 | 1.68 | 23.11 |
| Mar-21 | 49.06 ± 2.73 | 67.71 ± 25.93 | 25.55 ± 9.06 | 19.11 ± 2.16 | 0.85 | 1.67 | 26.14 |