Shimla: Long regarded as a refuge from the scorching summers of northern India, Shimla is witnessing a steady increase in surface temperatures as rapid urbanisation alters the character of the hill town. A recent assessment has found that several parts of the city have become significantly warmer over the last decade, raising concerns about the long-term environmental impact of unchecked development.
The study, undertaken jointly by the Shimla Municipal Corporation (SMC) and German development agency GIZ, points to a noticeable increase in land surface temperatures across multiple neighbourhoods. Researchers observed temperature rises ranging from 1.7°C to 2.5°C, attributing the trend largely to the Urban Heat Island phenomenon.
Urban Heat Island effects occur when built-up areas retain more heat than nearby natural landscapes. According to the findings, the growing concentration of concrete structures, asphalt-covered roads and metal rooftops has reduced the city’s natural ability to regulate temperature. Limited airflow between densely packed buildings has further intensified heat accumulation in several localities.
Experts involved in the study noted that the transformation of green spaces into developed areas has accelerated the warming trend. Surfaces commonly used in urban construction absorb solar radiation during the day and release it slowly after sunset, causing temperatures to remain elevated even during evening hours.
The report outlines a series of measures aimed at reversing the trend and strengthening the city’s resilience to climate-related challenges. Among the proposed solutions is the creation of additional water features, including ponds and fountains, which can naturally cool surrounding areas through evaporation.
Researchers have also stressed the importance of expanding urban greenery. Increasing tree cover, developing public parks and encouraging rooftop vegetation could help lower temperatures while improving air quality and enhancing biodiversity.
Another recommendation focuses on promoting reflective roofing materials, often referred to as “cool roofs,” which absorb less heat compared to conventional dark surfaces. The report suggests that future urban planning initiatives should incorporate climate-sensitive designs, permeable pavements and pedestrian-friendly infrastructure to reduce heat build-up.
In addition to physical interventions, the study calls for greater community participation in environmental conservation efforts. Encouraging public transport use and reducing dependence on private vehicles could also help curb emissions that contribute to local warming.
Officials say the findings will play a key role in shaping future environmental policies. Dr. Bhuwan Sharma, Joint Commissioner of the Shimla Municipal Corporation, said the civic body remains focused on protecting the town’s fragile ecosystem while pursuing sustainable growth.
He highlighted that ₹74.49 crore has been allocated under the Climate Tool Budget for 2026-27 to support projects related to ecological conservation, water management, waste treatment and climate adaptation. Further policy decisions, he added, will be guided by ongoing environmental studies and expert recommendations.
The report serves as a reminder that even hill towns traditionally known for their cool climate are not immune to the effects of urban expansion. As Shimla continues to grow, balancing development with environmental sustainability is likely to become one of the city’s most pressing challenges.
