Kejriwal to Delhi CM: 'When did AQI become temperature?' Alleges data hiding.

• Arvind Kejriwal criticized Delhi CM Rekha Gupta over her remarks on using mist sprayers at pollution hotspots and her statement that AQI "is like temperature."
• Kejriwal accused the government of trying to hide pollution data by spraying near AQI monitors, questioning the "new science" of AQI being like temperature.
• CM Gupta defended the spraying, stating hotspots are areas of high pollution and AQI is like temperature, measured by an instrument, making spraying a valid solution.
• The political debate intensified amid allegations from AAP of data manipulation by the government, which plans to deploy 305 mist sprayers in nine hotspots.
• Delhi's air quality remained in the 'very poor' category, with forecasts predicting further deterioration.

Why It Matters: Delhi's pollution data integrity is questioned amid political accusations.