What is the air quality in Hilton Head Island SC?

Hilton Head Island SC, United States of America has an annual US AQI of 48 (Reasonable) and average PM2.5 of 9 µg/m³, ranking #600 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Hilton Head Island SC?

December is typically the cleanest month (AQI 41) and July the most polluted (AQI 56).

Where does Hilton Head Island SC's air quality data come from?

PM2.5: 1998–2024 (satellite). From satellite data, because no government monitor covers the city. Full sources are on the methodology page.

Hilton Head Island SC, United States of America — Air Quality & Clean City Guide 2026

Hilton Head Island SC Air Quality Data

Global rank	City	Continent	AQI	PM2.5
600	Hilton Head Island SC, United States of America	North America	AQI 48	PM2.5 9 µg/m³