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Delhi AQI Crosses 500: Why Does Pollution Spike at Night and Early Morning?
Sentiment: NeutralHigh Priority
What Happened?
Delhi's air quality index (AQI) reached 510 on November 5, marking a significant increase in pollution levels. This spike is attributed to atmospheric conditions that trap pollutants at night.
Key points
- Delhi's AQI rose from 410 on November 3 to 510 on November 5.
- Pollution levels increase at night due to temperature inversion.
- During the day, sunlight and winds help disperse pollutants.
- The mixing layer for pollutants is shallower at night, leading to higher concentrations.
- Diwali celebrations on November 8 may worsen air quality with firecracker smoke.
Key insights
- The temperature inversion at night may lead to increased respiratory issues for residents.
- Continued high pollution levels could strain healthcare resources in Delhi.
- The upcoming Diwali celebrations may exacerbate the already poor air quality.
Why it matters
The worsening air quality could impact public health and safety, especially with Diwali approaching.
Source
India Today
