Top 10Updated 2026年3月16日
Top 10 Cities by Urban Heat Island (UHI) Intensity
This ranking, based on 2026 environmental remote sensing and ground monitoring data, compares the average temperature difference between core urban areas and surrounding rural environments in major global metropolises. It reflects the impact of urbanization, high-density building structures, and vegetation cover on local microclimates, serving as a critical indicator of urban climate resilience.
Current #1
New Delhi (India)
Interesting Facts & Summary
Key Insights on Urban Heat Island (UHI) Effect
- Building Entrapment: Top-ranked cities often feature high floor-area ratios and 'urban canyon' effects, hindering heat dissipation.
- Vegetation Deficit: Lack of green space is a core driver for temperature spikes, particularly in cities like Cairo and New Delhi.
- Climate Contrast: Interestingly, even in higher latitudes, rapid urbanization can lead to staggering temperature differentials.
| Rank | City Name | Average Temp Diff (°C) | Primary Cause |
|---|---|---|---|
New Delhi (India) | 9.2 | High-density settlements and low green coverage | |
Bangkok (Thailand) | 8.7 | Heavy anthropogenic heat and tropical humidity | |
Cairo (Egypt) | 8.4 | Desert climate and high-albedo building materials | |
| 4 | Jakarta (Indonesia) | 8.1 | Rapid, unplanned expansion and lack of ventilation |
| 5 | Mexico City (Mexico) | 7.8 | High-altitude basin creating a heat trap |
| 6 | Tokyo (Japan) | 7.6 | Extremely dense concrete infrastructure |
| 7 | Sao Paulo (Brazil) | 7.3 | Massive paved surfaces and traffic congestion |
| 8 | Dubai (UAE) | 7.1 | Super-tall buildings blocking airflow |
| 9 | Hong Kong (China) | 6.9 | Ultra-high density and narrow urban canyons |
| 10 | New York (USA) | 6.7 | Historic deep and narrow street configurations |
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