Delhi''s air quality slipped back into the "poor" category on Saturday, a day after it had improved significantly due to favourable wind speed. The city''s air quality index (AQI) was 209 at 9 am. The 24-hour average AQI was 137 on Friday, 302 on Thursday and 413 on Wednesday.from IndiaTV India: Google News Feed https://ift.tt/3laTbsV
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