How Record Temperatures Are Affecting Health in Delhi
Thermal imaging conducted by Greenpeace India in Delhi has revealed that surface temperatures on materials like asphalt and concrete are hitting critical levels, including a scorching 64°C. These readings are not captured in official weather reports. At busy transport hubs, road surfaces heat up to 64°C, while open-air spots reach 61°C. In contrast, shaded areas under trees register a much cooler 39.8°C, highlighting dramatic temperature variations based on location.
Medical experts are sounding alarms over the serious dangers tied to such extreme heat. The human body can maintain a stable internal temperature of 37°C, but the critical threshold is 40°C. Once that limit is crossed, life-threatening conditions can emerge, including:
- confusion
- seizures
- multiple organ failure
Signs of heat exhaustion include heavy sweating, headaches, and overall fatigue.
Life in the Urban Heat: Inside Delhi's Densely Packed Neighborhoods
In the crowded Sundar Nagri area, indoor temperatures in non-ventilated rooms hover around 40°C during the day—almost indistinguishable from the outdoor heat. Residents like Abhishek and Kajal are keeping a heat log (Garmi khata) to track how these extreme conditions disrupt their sleep, productivity, and overall health.
Sanjana Ben, a street vendor selling dried fruit, reports dizziness and blurred vision as direct results of the heat. She describes the experience by saying,
“The heat rises from the ground and presses down from the sky at the same time,”underscoring the dangerous toll it takes on daily life in Delhi.
This situation demands urgent attention, as extreme temperatures can severely impact public health and the urban environment.
With global warming and climate change accelerating, such extreme heat events are becoming more common in cities worldwide. Rising temperatures not only threaten residents' health but also put significant strain on urban infrastructure, increasing the need for adaptive measures and strategic planning to mitigate heat-related consequences. It is crucial for authorities to incorporate this data into health and urban development policies.
The alarming rise in temperatures is not just a local concern; it mirrors a global trend where extreme heat is increasingly recognized as a significant health threat. In fact, the WHO has identified extreme heat as a 'silent killer', linking it to over 200,000 deaths worldwide. Understanding the broader implications of these rising temperatures is crucial for developing effective responses to protect public health.