What's Happening?

HawaiÊ»i Island is experiencing a noticeable increase in temperatures, with more days exceeding 80Â°F (27Â°C) annually, according to measurements near Hilo International Airport. Molly Dolphin, from the County of HawaiÊ»i Office of Sustainability, Climate, Equity, and Resilience, has observed these changes firsthand in Volcano, where she grew up. To address the data deficit in rural areas, the county partnered with Vibrant HawaiÊ»i to deploy heat and humidity sensors across 12 locations. These sensors tracked air temperatures and relative humidity for 12 weeks, revealing high humidity levels that exacerbate heat risks. The National Weather Service's heat index indicates that high humidity can make temperatures feel hotter, increasing the risk of heat-related illnesses.

Why It's Important?

The rising temperatures and humidity levels pose significant risks to HawaiÊ»i Island residents, particularly in areas like NÄÊ»Älehu and PÄhoa, where air conditioning is less common. High heat indices, sometimes exceeding 100Â°F (38Â°C), can lead to heat illnesses, especially during prolonged exposure or physical activity. Vulnerable populations, including the elderly, unhoused individuals, and outdoor workers, are at greater risk. The county's efforts to establish baseline data aim to improve preparedness for future heat events and inform community planning.

What's Next?

The county plans to redeploy sensors this summer to continue monitoring heat and humidity levels. The data collected will be summarized in a report, and a community needs assessment will be conducted to better understand the impact of heat on residents. This ongoing effort is crucial for adapting to rising temperatures and ensuring community resilience against heat-related challenges.

Beyond the Headlines

Residents are advised to stay hydrated, limit outdoor activities during peak heat, and seek cooler environments when possible. The county's resilience hubs offer spaces for collaboration and research to benefit local communities. Establishing baseline data is a critical step in driving conversations and planning around heat preparedness.

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