The Commission for Air Quality Management’s direction to Delhi-NCR states to identify pollution hotspots and prepare location-specific action plans appears procedural on the surface. But it also exposes a persistent problem in the region’s air-quality governance: pollution is measured across a large airshed, while many of the actions needed to reduce it must be carried out street by street, site by site and agency by agency.
In a letter dated August 24, CAQM asked the pollution control boards of Haryana, Rajasthan and Uttar Pradesh to identify air-pollution hotspots in their respective National Capital Region areas, assess the major emission sources and prepare detailed plans to control them. Delhi has been asked to update its existing hotspot list and submit a revised plan through the Delhi Pollution Control Committee. Each hotspot is also expected to have a designated nodal officer responsible for implementation.
CAQM said the exercise was intended to address air pollution at the local level through focused action. Its statement, reported by The Times of India, said NCR state governments and the Government of National Capital Territory of Delhi had been directed to develop hotspot-specific strategies and implementation plans for accelerated pollution abatement.
The significance of the directive lies in the gap between regional diagnosis and local execution. Delhi-NCR’s air pollution problem is commonly discussed as a single regional crisis, but the material supplied in the report shows that the sources identified at local hotspots are varied. They include road dust, garbage and construction-waste dumping, potholes, unpaved roads, traffic congestion and open waste burning. These sources do not belong to one department, one level of government or one enforcement mechanism.
A regional authority can set a common framework, but the response at an individual hotspot requires several public agencies to act together. Roads may need repair or paving. Waste dumping may require municipal collection and enforcement. Construction waste may require site-level monitoring. Open burning may require local inspection and action. Traffic congestion may involve road management, parking control or changes in movement patterns. The hotspot model therefore turns air-quality control into an administrative coordination test as much as an environmental exercise.
The available evidence also suggests that Delhi has already been working with such a framework. In 2023, an inventory of major pollution sources identified areas with annual average PM10 concentrations above 300 micrograms per cubic metre or PM2.5 concentrations above 100 micrograms per cubic metre as hotspots. These thresholds provided a basis for marking locations where pollution levels required focused attention.
The distinction between PM10 and PM2.5 matters because the two categories describe different particle sizes, even though both are associated with health risks. PM10 refers to larger inhalable particles, while PM2.5 consists of finer particles that can enter the respiratory system. The report notes that exposure to these particles is linked to a range of health problems. The hotspot exercise therefore connects environmental monitoring with a question of public health and everyday exposure.
However, identifying a location as a hotspot does not by itself establish which intervention will work there. That is why CAQM has asked for emission-source assessments and detailed action plans rather than only updated maps. A pollution reading shows where the problem is concentrated. A source inventory is intended to show what is producing or intensifying the problem. The difference is central to implementation: without identifying sources, authorities may record a hotspot without being able to assign a practical response.
Delhi’s earlier exercise provides a limited but useful view of the implementation challenge. The environment department had identified 65 major pollution sources across 13 hotspots. Of these, 16 were reported to have been resolved, 43 remained under continued monitoring and six were pending. The same exercise identified 4,555 minor pollution sources across the 13 locations. These included road dust, waste dumping, construction waste, potholes, unpaved roads, congestion and open waste burning.
The numbers show that hotspot governance operates at two different scales. Major sources may be easier to name and assign to a responsible authority. Thousands of minor sources, by contrast, can be dispersed across roads, vacant plots, construction sites and neighbourhood edges. Each may contribute a smaller amount individually, but their cumulative presence makes the task of monitoring and closing them considerably more complex.
The report says nearly half of the minor problems had been addressed at the time of review. That figure indicates progress, but it also leaves a substantial number of issues either unresolved or requiring continued attention. It further shows why a one-time clean-up campaign would not be enough. If a pothole is repaired but a road remains unpaved elsewhere, or if waste is removed without preventing new dumping, the local source profile can change without the broader hotspot disappearing.
This is the administrative logic behind CAQM’s request for nodal officers. A named officer creates a point of responsibility for each hotspot and can make it easier to track whether identified measures have been implemented. It also creates a framework for distinguishing between an action that was announced, one that was initiated and one that was completed. The supplied report does not establish how the officers will be evaluated, what powers they will have or how performance will be reported publicly. Those details remain important gaps in the implementation framework.
The directive also illustrates the relationship between regional and local institutions. CAQM is seeking a common approach across the NCR, while state pollution control boards and Delhi’s pollution-control institutions are expected to identify sources and prepare location-specific plans. Local civic agencies appear central to many of the listed interventions, particularly those involving roads, waste and construction activity. The effectiveness of the model will therefore depend on whether the plan-making process is connected to the agencies that control land, roads, waste collection and enforcement.
That institutional structure matters because pollution sources do not follow administrative boundaries. An NCR hotspot may be located within one state or city, but the broader air-quality system is regional. At the same time, the remedies listed in the report are highly local. This creates a dual responsibility: regional coordination is needed to establish common standards and priorities, while local authorities must deliver the physical and regulatory actions that change conditions on the ground.
The available data also raises a question about what counts as success. The earlier review recorded resolved, monitored and pending sources, but the report does not provide a comparable measure of how pollutant concentrations changed after specific interventions. Nor does it establish whether the resolution of a listed source led to sustained improvement at the relevant hotspot. Future action plans would be more useful if they connect each source to a responsible agency, a completion timeline and a method of measuring results.
This is particularly important because the hotspot list is not static. Delhi has been asked to update its list, suggesting that locations and source patterns may require reassessment. A hotspot can change as construction activity shifts, roads deteriorate, traffic patterns change or waste accumulates. Updating the list is therefore not merely an administrative revision. It is part of deciding whether authorities are responding to current conditions or continuing to work from an older map of the problem.
The directive’s broader urban lesson is that air pollution is partly an infrastructure and municipal-management issue. The sources identified in Delhi include conditions that are visible in the ordinary functioning of a city: unpaved surfaces, damaged roads, waste handling failures, construction debris and congestion. Treating these only as seasonal or atmospheric problems can obscure the role of routine urban services. A pollution-control plan that does not connect with road maintenance, waste management and construction regulation may struggle to move beyond monitoring.
At the same time, the supplied material does not establish that local sources account for all pollution in Delhi-NCR, nor does it quantify the relative contribution of each source. The CAQM exercise is focused on hotspots and local action; it should not be read as a complete explanation of the region’s air-quality problem. Its value lies in creating a more precise basis for intervention, not in replacing broader regional assessments.
What the evidence confirms is that Delhi already has a hotspot-based framework, that the framework has identified both major and minor sources, and that a significant number of local issues have required continued monitoring or remained pending. CAQM’s latest direction extends this approach across the NCR and adds a requirement for state-level identification, source assessment, action planning and designated responsibility.
The next test will be whether the revised plans convert inventories into verifiable implementation. That will require clarity on the responsible agencies, the status of each identified source, the timelines for action and the evidence used to determine whether a problem has been resolved. Until those details are available, the directive marks an important shift toward local accountability, but not yet proof of cleaner air at the hotspots it seeks to address.
