Des Moines UV Index Peaks in September at Moderate Levels
Des Moines UV Index Peaks in September at Moderate Levels
US · Published Sep 28, 2026
• The UV index in Des Moines, Iowa, varies significantly throughout the year, with September showing a typical midday UV index of 5.3, categorized as moderate. According to data from NOAA and EPA, 55% of September days experience a UV index of 6 or higher, while no days reach the 'Very High' or 'Extreme' categories. The highest UV index recorded in September is
• This data is based on climatology from 2015 to 2024 and highlights the seasonal changes in UV exposure. Residents are advised to plan outdoor activities during lower UV hours, such as early morning or late afternoon, to minimize exposure during peak times.

Impact & Risks

Moderate UV levels in September mean that prolonged exposure to the sun during midday hours can lead to skin damage and other health risks without proper protection. While no 'Very High' or 'Extreme' UV days are expected this month, individuals with sensitive skin or those spending extended periods outdoors should take precautions. Risks include sunburn, premature skin aging, and increased chances of skin cancer over time. The data underscores the importance of sun safety even during months with moderate UV levels.

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