India News Live Updates, 06 November 2026: 50% Delhi AQI monitoring stations log highly toxic air quality in ‘very poor’ category

The Air Quality Index, or AQI, is a single number that summarises outdoor air pollution. It helps people understand how clean or hazardous the air is without tracking every pollutant separately. Higher numbers mean greater pollution and greater health concern. On India’s CPCB scale, 301–400 is “very poor,” while 401–500 is “severe.”

The article records Delhi’s overall AQI at 391 between 8 am and 9 am. That placed the city near the severe range. Thirty of 59 monitoring stations recorded severe air at 9 am, while the remaining stations were in the very poor range. Rohini recorded 475, and IIT Delhi recorded 472.

“Very poor” air can cause breathing discomfort and worsen existing respiratory illness. “Severe” air can affect healthy people as well as vulnerable groups. Delhi’s first severe-air day of the season was expected, with pollution potentially lasting through Diwali and worsening because of stubble burning and fireworks.

Pollution was widespread across Delhi rather than confined to one isolated hotspot. At 9 am, 30 of the city’s 59 monitoring stations recorded air in the severe category. The remaining 29 stations recorded very poor air. This means every station reported air in one of the two most concerning categories described in the update.

The citywide AQI rose from 389 to 391 between 8 am and 9 am. Some locations were much worse than the overall figure. Rohini recorded 475, the highest reading mentioned, while IIT Delhi reached 472. Both readings were firmly within the severe range.

The Air Quality Early Warning System expected Delhi’s first severe-air day of the season. It also forecast that poor conditions could continue through Diwali on Sunday. Experts warned that some hotspots might cross 450 if stubble burning and firecracker emissions added more pollution.

The update identifies several contributors to Delhi’s worsening air. It points to peak stubble burning in the National Capital Region and firecracker emissions around Diwali. These sources add pollution to an atmosphere already showing very poor or severe readings across the city.

Stubble burning releases smoke and fine particles that can travel with regional airflows into Delhi and nearby areas. Firecrackers add short-term bursts of smoke and particles. The article does not quantify each source’s separate contribution, but it says both could worsen conditions. Experts also warned that some local hotspots might cross an AQI of 450.

The timing raised concern because the Air Quality Early Warning System expected Delhi’s first severe-air day of the season. Conditions were likely to last through Diwali on Sunday. Reducing or limiting these additional emissions would therefore matter most during the period when the city’s air was already close to, or inside, the severe category.

The article reports pollution readings but does not detail specific health outcomes. Established health evidence shows that prolonged exposure to very poor or severe air can irritate the eyes, nose, throat, and airways. It can cause coughing, wheezing, breathlessness, and reduced ability to exercise. Fine particles can also increase strain on the heart and lungs.

Children breathe more air relative to their body size and have developing lungs. Older adults may have less physiological reserve. People with asthma, chronic obstructive pulmonary disease, or other respiratory conditions can experience worsened symptoms and more frequent flare-ups. Very polluted air can also aggravate existing heart and circulation problems.

Delhi’s situation was especially concerning because 30 of 59 stations recorded severe air, while the rest recorded very poor air. The update expected severe conditions through Diwali. During such episodes, vulnerable people generally benefit from reducing outdoor exposure and following official health guidance, though the article gives no specific medical instructions.

The article forecasts shallow fog until November 9 and reports Delhi’s minimum temperature at 17.2°C. It does not explain the trapping mechanism. In general, pollution disperses when winds move air horizontally and when warmer air near the ground rises and mixes with cleaner air above. Weak winds slow that dilution.

Cool, stable air can create a shallow layer in which air near the surface does not rise easily. Fog adds moisture and often appears when air is calm and close to saturation. Together, these conditions can keep smoke and fine particles concentrated near roads and homes. The pollutants then remain in the breathing zone for longer.

This helps explain why pollution can remain high even when emissions do not change dramatically during every hour. Delhi’s AQI rose from 389 to 391 in one hour, and the city was expected to experience its first severe-air day of the season. The article forecast shallow fog through November 9 and poor conditions through Diwali.

CPCB monitoring stations measure concentrations of major air pollutants, such as particulate matter and gases, using continuous or scheduled instruments. Each pollutant concentration is converted into a pollutant-specific sub-index using health-based concentration bands. The overall AQI is then generally determined by the highest or most influential sub-index, rather than by simply averaging every pollutant.

For example, a station may measure PM2.5, PM10, nitrogen dioxide, sulphur dioxide, carbon monoxide, ozone, ammonia, and lead. The resulting AQI number communicates the combined health risk in a simpler form. The article does not list which pollutants drove Delhi’s readings or provide the exact calculation for each station.

The monitoring network showed how broadly pollution was spread. Of 59 stations, 30 recorded severe air at 9 am, while 29 recorded very poor air. Delhi’s overall AQI was 391, with Rohini at 475 and IIT Delhi at 472. These readings supported forecasts of the season’s first severe-air day.

PM2.5 means fine particulate matter with a diameter of 2.5 micrometres or less. The article does not define PM2.5 specifically, but it reports Delhi’s extremely polluted air. These particles can come from combustion, including smoke from fires, vehicles, industry, stubble burning, and fireworks.

Their small size allows them to bypass some of the body’s larger-particle defenses. They can travel deep into the lungs and reach the tiny air sacs where oxygen enters the blood. Some particles, or substances carried on them, may then pass through lung tissue into the bloodstream. This can promote inflammation and affect organs beyond the lungs.

That is why fine particles are a major health concern during severe pollution episodes. Delhi’s AQI reached 391 overall, while Rohini and IIT Delhi recorded 475 and 472. The expected combination of stubble burning and firecracker emissions could add more fine particles, while shallow fog may keep them near ground level.