With the onset of winter, Air pollution becomes a major problem especially in the Northern part of the country. Delhi and surrounding areas bear the brunt of this problem due to various reasons which include vehicular and industrial exhaust, bio-mass burning, construction and road dust etc. But not just Delhi, Air pollution also becomes a critical issue in mining and industrial areas.
Below is a brief representation of data captured by portable devices installed in multiple locations in Korba, Delhi and Ranchi. The analysis has been done for two reporting periods – 1 November to 30 November 2022 and Jan to November 2022
Section 1 – Data Analysis for period Jan to November 2022
Monthly Average AQI – Different Cities
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Korba
344
239
304
256
102
118
72
80
93
204
320
Delhi
355
303
218
133
98
75
71
67
85
323
380
Ranchi
200
81
77
159
158
Table and Graph above show the Average Monthly AQI in different Cities. The graph and data clearly showcase the winter months when AQI comes under dangerous levels and summer and monsoon months when the air quality is Satisfactory. It is clear that AQI is showing an increasing trend with the onset of winter. Air quality improvement needs to be yearlong activity and the base load factors like vehicle exhausts, industrial exhausts, construction dust etc need to be controlled better. Currently in the entire country the base load of air pollutants is very high and any short or seasonal factors take the air quality into severe one which can be very hazardous for health. During this period, Delhi recorded the worst AQI in the month of November. Out of 11 months, for 6-month AQI in Delhi was above 100 while Korba had AQI above 100 for 9 months. The overall data for Korba shows that Korba Air is more polluted than Delhi for longer durations in the year. The different colour bands in the graph respond to the AQI categories as stated in the NAAQs
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