What is the air quality trend in Hilton Head Island?

Over the past 15 days, Hilton Head Island had an average AQI of 39 based on station measurements. The worst day was 2026-07-29 with AQI 75.

How is Hilton Head Island air quality measured?

Air quality in Hilton Head Island is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Hilton Head Island, United States

Name: Hilton Head Island Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Hilton Head Island, United States.

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

130h

PM2.5 Station

130h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-08	30	5–55	7.6 µg/m³	2h	1
2026-08-07	34	11–58	8.2 µg/m³	11h	1
2026-08-06	31	17–62	7.9 µg/m³	5h	1
2026-08-05	66	35–144	19.9 µg/m³	8h	1
2026-08-04	30	5–78	8.1 µg/m³	7h	1
2026-08-03	26	1–63	6.5 µg/m³	9h	1
2026-08-02	27	3–54	6.5 µg/m³	12h	1
2026-08-01	36	7–64	9.1 µg/m³	12h	1
2026-07-31	36	5–90	9.8 µg/m³	12h	1
2026-07-30	29	13–40	7.0 µg/m³	8h	1
2026-07-29	75	17–143	25.6 µg/m³	7h	1
2026-07-28	57	21–112	16.9 µg/m³	11h	1
2026-07-27	51	15–164	16.6 µg/m³	10h	1
2026-07-26	33	9–104	9.1 µg/m³	9h	1
2026-07-25	35	14–68	9.1 µg/m³	7h	1

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