Delhi's Disappearing Green Cover: The Numbers Behind Every Neighbourhood's Fight for Shade

Delhi lost 4,731 trees to development projects between January 2024 and March 2026, according to records maintained by the Forest Department under the Delhi Tree Preservation Act. The figure, buried in quarterly compliance filings that few residents ever read, translates into something visceral this July: colonies in South-East and North-West Delhi are recording street-level temperatures 4 to 6 degrees Celsius higher than neighbourhoods where canopy cover exceeds 18 percent.

The timing matters. The Delhi Pollution Control Committee released its mid-year urban greening audit on June 28, just as the city lurches through what the India Meteorological Department has classified as an "extended heat stress period"—consecutive days above 42°C that have already triggered hospital admissions for heatstroke across at least seven districts. The audit landed quietly, without a press conference, but the ward-by-ward breakdown it contains is the most granular picture the city has produced in nearly a decade of promises about urban forestry.

Colonies That Lost the Most

Mustafabad, a densely packed residential area in North-East Delhi, shows up near the bottom of every metric. Its tree-to-resident ratio stands at 1:312—meaning roughly one registered tree for every 312 people. Contrast that with Vasant Vihar in South-West Delhi, a leafier enclave where the ratio is approximately 1:47. The gap did not happen by accident. Mustafabad absorbed significant unplanned construction between 2018 and 2023, during which period the ward's built-up footprint expanded by an estimated 23 percent while its green cover shrank from 9.4 percent to 6.1 percent, per satellite imagery analysis commissioned by the Centre for Science and Environment, based in Tughlakabad Institutional Area.

Residents' welfare associations in Trilokpuri and Kondli—two adjacent East Delhi localities where the DPCC audit flags "critical canopy deficit"—have been filing Right to Information requests since February 2025 trying to determine why 218 trees marked for transplantation during a road-widening project on Trilokpuri's Block 20 main road were never replanted. The Forest Department's standard response cites "site unsuitability," a phrase that appears in 61 percent of all transplantation failure reports filed between 2022 and 2025.

What the Data Actually Reveals

The DPCC audit scores 272 wards across twelve indicators, from soil permeability to proximity of the nearest park. Eighty-one wards score below 40 out of 100. The worst performers cluster in a belt running roughly from Seelampur in the north-east through Okhla Phase II in the south—areas that also happen to register among the highest average PM 2.5 readings citywide. The correlation is not causal on its own, researchers are careful to note, but it aligns with a 2025 study published by the Indian Institute of Technology Delhi's Department of Civil Engineering, which estimated that every one percent reduction in urban tree cover within a 500-metre radius of an air quality monitoring station corresponds to a measurable increase of 3.2 micrograms per cubic metre in annual average PM 2.5 concentration.

The Aam Aadmi Party government's "Green Delhi" app, launched in 2021, has logged over 94,000 complaints about illegal tree felling as of June 2026. Fewer than 31 percent of those complaints show a resolution status. The Delhi Development Authority, which controls large tracts of land where compensatory plantation is supposed to occur, has planted 1.2 million saplings since 2020 under its own targets—but independent monitoring by Toxics Link, an environmental NGO headquartered in Jangpura, found that survival rates for those saplings averaged just 34 percent after three years, well below the 60 percent threshold the DDA's own project documentation specifies.

For residents who want to act before another monsoon season scrambles priorities again: the South Delhi Municipal Corporation is accepting applications for its community nursery scheme until July 31, through which registered welfare associations in deficit wards can claim up to 50 free native-species saplings along with one consultation visit from a horticulture officer. The DPCC audit itself is downloadable from the committee's official portal. Ward numbers, scores, and deficit classifications are listed by colony name. Looking up your own street takes about three minutes and, for many Delhiites this summer, the number that comes back will explain exactly why the footpath outside feels like a tandoor.