India’s Environmental Crisis Demands Accountability and Regional Cooperation

India’s worsening air pollution has become a major environmental and public health challenge, with satellite observations increasingly revealing the scale and geographical spread of emissions across the country. Every winter, the Indo-Gangetic Plains experience dense layers of smoke, haze and particulate pollution, affecting millions of people across Delhi, Punjab, Haryana and Uttar Pradesh. While political arguments over cross-border pollution periodically emerge, scientific assessments indicate that India’s domestic sources, including agricultural burning, industrial emissions, coal-fired power generation and urban activities, require urgent attention.

Satellite observations from NASA’s MODIS instruments, Sentinel-2 and India’s INSAT-3DS provide important evidence of these environmental pressures. These technologies allow researchers to monitor fire activity, atmospheric haze, industrial infrastructure and changes in land use. Their findings demonstrate that India’s pollution problem cannot be explained through a single source or seasonal activity. Instead, it reflects the combined impact of multiple emission-producing sectors operating across a densely populated industrial and agricultural landscape.

Delhi’s Air Quality Highlights the Growing Crisis

The deterioration in Delhi’s air quality during early November 2026 illustrated the severity of the seasonal pollution problem. According to contemporary reporting, the city’s Air Quality Index increased from 117 on October 31 to 324 on November 2 and 348 on November 3, entering the very poor category. On November 3, the Central Pollution Control Board also recorded a reading of 331 at 7 a.m. 

The deterioration was associated with unfavourable meteorological conditions, including weak winds, lower temperatures and the accumulation of emissions close to the ground. These conditions allowed pollutants from surrounding agricultural and industrial regions to accumulate over the national capital.

However, seasonal weather does not independently create pollution. It traps emissions generated by human activities, making the underlying sources particularly important. Transport, construction, residential fuel consumption, industrial activity and agricultural residue burning all contribute to the wider pollution burden.

The geographical spread of haze across northern India demonstrates the importance of addressing pollution at the regional level rather than concentrating exclusively on individual cities.

Satellite Evidence Reveals the Stubble-Burning Problem

Agricultural residue burning remains one of the most visible contributors to northern India’s seasonal pollution. Following the paddy harvest, some farmers burn leftover crop residue to clear their fields quickly for the next agricultural cycle. The resulting smoke releases fine particulate matter and other pollutants that can travel across state boundaries.

According to ICAR satellite monitoring data reported on November 3, approximately 3,535 paddy residue-burning incidents had been detected across seven states between September 15 and November 2, 2026. Punjab recorded 1,612 incidents, the highest among the monitored states. 

An additional challenge concerns the timing of these fires. NASA’s polar-orbiting satellites generally observe Punjab during the early afternoon, while many farmers have increasingly shifted burning activities to later hours. Research using geostationary satellite observations has identified a substantial concentration of fires after 4 p.m., meaning that conventional daytime observations can underestimate the actual frequency of burning. 

India’s INSAT-3DS satellite provides additional monitoring opportunities because it observes the region repeatedly throughout the day. These observations demonstrate why relying exclusively on individual satellite passes can produce an incomplete picture of agricultural emissions.

Industrial Emissions and Brick Kilns Add Year-Round Pressure

Beyond agriculture, India’s industrial infrastructure represents another important source of air pollution. Coal-fired power stations, factories, manufacturing facilities and brick kilns release particulate matter and precursor gases that contribute to deteriorating air quality.

A September 2026 study published in the International Journal of Applied Earth Observation and Geoinformation used Sentinel-2 satellite imagery and deep-learning techniques to map brick kilns across India. The researchers identified 48,928 kilns in their 2025 mapping exercise, providing a nationwide dataset for examining their distribution and technological characteristics.

Separate reporting on the study highlighted the much larger estimated scale of India’s brick-kiln industry and its substantial consumption of coal and biomass. These facilities are particularly concentrated across the Indo-Gangetic Plains, where construction demand and access to raw materials have encouraged their development. 

The environmental implications extend beyond the immediate surroundings of individual kilns. Their emissions contribute to local particulate concentrations, while atmospheric movement can transport pollutants towards nearby towns and densely populated urban centres.

Industrial pollution also remains a year-round concern. Coal-based electricity generation and manufacturing release sulphur dioxide, nitrogen oxides and other pollutants that contribute to the formation of secondary particulate matter.

The Hidden Contribution of Secondary Pollution

One of the most important findings in recent environmental research concerns the formation of PM2.5 through chemical reactions in the atmosphere.

A December 2025 assessment by the Centre for Research on Energy and Clean Air (CREA) found that ammonium sulfate contributes approximately one-third of India’s PM2.5 burden nationally. In certain states, its contribution reaches 42 percent. The compound forms when sulphur dioxide reacts with ammonia in the atmosphere. 

Coal-fired power plants are particularly important because they account for more than 60 percent of India’s sulphur dioxide emissions, according to CREA’s assessment. The findings also identified regulatory shortcomings, including exemptions affecting approximately 78 percent of coal-fired thermal power plants from installing flue-gas desulphurisation systems.

This evidence demonstrates that India’s pollution challenge extends beyond visible smoke and agricultural fires. Controlling precursor gases and industrial emissions is equally important for reducing harmful particulate concentrations.

Environmental Accountability and Regional Cooperation

India’s pollution crisis requires transparent environmental monitoring, effective enforcement and stronger emission-control policies. Satellite imagery provides valuable evidence, but observations must be combined with ground-level measurements, independent scientific assessments and transparent reporting to establish the contribution of different pollution sources.

Blaming neighbouring countries cannot replace responsibility for controlling domestic emissions. At the same time, atmospheric pollution crosses political boundaries, making cooperation between India, Pakistan and other South Asian countries essential.

Shared airshed monitoring, coordinated agricultural policies, cleaner industrial technologies and transparent emissions data could help reduce the regional health burden.

Ultimately, India’s environmental challenge is not simply a seasonal inconvenience but a structural problem involving agriculture, energy production, industrialisation and urban development. The satellite evidence and scientific assessments provide an increasingly detailed picture of these pressures. Meaningful improvement will depend on addressing the sources of pollution rather than shifting responsibility. Protecting public health and regional air quality requires accountability, scientific cooperation and sustained environmental action.