GUWAHATI: The air quality in Guwahati is recorded to be at its lowest between 6 to8 p.m. as the pollutants in the air (PM 2.5) is recorded to be at its peak every evening.
The Pollution Control Board of Assam (PCBA) has been monitoring the air quality since the past two months and has observed that Guwahatians are at the highest risk due to toxicity in the air during the evening hours. According to reports, the city’s air pollution levels have increased at an alarming rate. The average PM 2.5 level in the month of October in Guwahati was 53.36 while this increased to 97.9 in November. PM 2.5 are fine particulate matters suspended in the air measuring two and a half microns or less in width. There are around 25,000 microns in an inch. Presence of high levels of PM 2.5 in the air causes the air to appear foggy, reduces visibility and can even prove fatal, especially for people with respiratory issues. As per the data, the highest PM 10 level for October was 1000 while the lowest PM 10 level in October was 18. PM 10 is another air pollutant PM 10 which is particulate matter measuring 10 micrometers or less in diameter was 215.2. The highest PM 2.5 level as recorded in an hour in October was 290, whereas the lowest was 1. There are 6 air quality monitoring stations in Guwahati.
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