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Environment & Sustainability Guide

Air quality, green spaces, and environmental policies in Puerto Rico

Puerto Rico faces significant climate change challenges as a Small Island Developing State, ranking 46th globally in climate vulnerability. The island experiences rising temperatures, changing precipitation patterns, and increased extreme weather frequency, with 93% of residents expressing concern about climate impacts. Despite contributing only 1.5% of global greenhouse gas emissions, Puerto Rico is disproportionately affected by hurricanes, flooding, and sea level rise.

Air Quality Index

Good

7.0/10

Stable trend

San Juan experienced a temperature increase of 0.2°C from 2010-2025, with PM2.5 levels surging by 1.6%. Current climate change severity in San Juan is rated as High (48/100), indicating worsening air quality conditions. The region shows an 11.4% deterioration in climate scores over the past 15 years.

Water Quality

Moderate

6.5/10

Puerto Rico faces significant water quality challenges due to climate change impacts including altered precipitation patterns and increased flooding. Annual rainfall variation increased by 61.08% from 2010-2025 in San Juan, affecting water availability and quality. Coastal communities face threats from sea level rise and saltwater intrusion into freshwater aquifers.

Water quality is impacted by rapid urban growth and increased impervious surfaces across watersheds, leading to flooding in vulnerable areas. Infrastructure deficiencies revealed during Hurricane María (2017) continue to affect water treatment and distribution systems.

Recycling System

Specific recycling rate and infrastructure data for Puerto Rico is not currently available in verified sources. However, waste management challenges are compounded by climate change impacts including increased flooding that damages waste management facilities and infrastructure.

Green Spaces

Puerto Rico contains diverse ecosystems vulnerable to climate change impacts. The island's complex topography supports varied habitats, but rising temperatures and altered precipitation patterns threaten biodiversity. Protected areas and conservation efforts are essential for maintaining ecological resilience.

Puerto Rico participates in regional conservation efforts through the Caribbean Landscape Conservation Cooperative, which coordinates climate adaptation strategies across the island and U.S. Virgin Islands.

Environmental Policies

Puerto Rico has limited participation in international climate frameworks due to its unique political status. The island has not fully participated in the UN Framework Convention on Climate Change (UNFCCC) and related intergovernmental processes. However, local and regional initiatives address climate vulnerability and adaptation strategies.

Key Policies:

•Caribbean Landscape Conservation Cooperative climate adaptation initiatives
•Regional climate projection development for adaptation planning
•Local-scale climate modeling for ecosystem and water resource management

Renewable Energy: Specific renewable energy percentage targets for Puerto Rico are not detailed in current verified sources, though climate adaptation strategies emphasize sustainable energy transition.

Natural Disaster Risk

HIGH

Puerto Rico experiences high natural disaster risk, particularly from hurricanes and tropical storms. From 1980-2024, 8 confirmed weather/climate disaster events caused losses exceeding $1 billion each. The island's population density of 449 individuals per square kilometer, with 56% residing in coastal areas, increases vulnerability to climate-related hazards.

Hurricanes and tropical stormsFloodingHeatwavesDroughtsSea level rise

Climate Change Impacts: Puerto Rico faces accelerating climate change impacts with projections showing annual temperature increases of 1°C to 1.3°C by mid-century, with larger increases in interior regions. Precipitation is projected to decline by 12-19% island-wide, with some localized decreases exceeding 30%. Between 1993-2022, storms (35%), heatwaves (30%), and floods (27%) caused the most fatalities. Nearly 31,000 people were affected by multiple weather events during this period, representing a loss of 2.99% of GDP. Hurricane María (2017) killed at least 4,645 people and revealed critical infrastructure deficiencies. The frequency and intensity of extreme weather events have increased significantly, with climate change driving more severe and frequent storms, floods, heatwaves, and droughts.

Sustainability Initiatives

Climate Adaptation and Resilience

Puerto Rico is developing local-scale climate projections at 2km horizontal resolution using dynamic downscaling from three global and two regional climate models. These projections aid adaptation strategy development for ecosystems, hydrology, and water resources. The Caribbean Landscape Conservation Cooperative coordinates regional climate adaptation efforts across Puerto Rico and the U.S. Virgin Islands.

Community Climate Awareness

93% of Puerto Ricans express concern about climate change (very or somewhat worried), with 84% believing climate change will harm future generations greatly and 61% reporting personal concern. Puerto Rico has the highest proportion of respondents globally believing climate change should be a high government priority, reflecting strong community engagement and adaptive capacity.

Infrastructure and Disaster Preparedness

Puerto Rico is addressing infrastructure vulnerabilities exposed by Hurricane María (2017). Adaptation measures focus on improving early warning systems, emergency preparedness, and building resilience in coastal communities. However, limited participation in international climate frameworks (UNFCCC) constrains access to global climate finance and technical support.

Wildlife & Nature

Puerto Rican ParrotCritically Endangered

Caribbean EcosystemsVulnerable

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