With the constantly deteriorating Air Quality Index (AQI) in Guwahati, the real-time air quality in the city was recorded at 341 AQI on Saturday morning, which is regarded as “severe” as per standards.
Currently, the concentration of PM2.5 in Guwahati is 174 (µg/m³) which is 6.96 times the recommended limit.
Notably, the World Health Organization (WHO) recommends 15 µg/m³ as the threshold concentration of PM2.5 for a 24-hour mean.
Meanwhile, Guwahati initially experienced a degradation in the quality of the air starting in late October.
The major reason why winters are the “worst-hit” in terms of air pollution is that colder, drier air traps more pollution during the cold season. This is also added up by the already existing outdoor and indoor pollution.
In the last 24 hours, the worst air quality index was recorded at 420 at 10:00 p.m. On the other hand, the best air quality index was 184 at 3:00 PM during the last 24 hrs.
Comparatively, Guwahati’s 24-hour average AQI is 215—higher than the average for Assam at 169 and the entire country at 158.