What is the air quality trend in Greenville?

Over the past 15 days, Greenville had an average AQI of 47 based on station measurements. The worst day was 2026-07-17 with AQI 91.

How is Greenville air quality measured?

Air quality in Greenville 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 Greenville, United States

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

Historical PM2.5 and AQI trend from monitoring stations near Greenville, United States.

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

143h

PM2.5 Station

143h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	57	57–57	14.9 µg/m³	1h	1
2026-07-21	40	24–62	10.0 µg/m³	12h	1
2026-07-20	58	20–98	16.5 µg/m³	11h	1
2026-07-19	58	13–134	17.9 µg/m³	14h	1
2026-07-18	48	9–165	14.9 µg/m³	13h	1
2026-07-17	91	51–180	37.9 µg/m³	7h	1
2026-07-16	82	22–271	40.6 µg/m³	9h	1
2026-07-15	39	18–55	9.4 µg/m³	11h	1
2026-07-14	38	28–48	9.1 µg/m³	7h	1
2026-07-13	25	6–50	6.0 µg/m³	8h	1
2026-07-12	40	18–64	10.0 µg/m³	10h	1
2026-07-11	31	10–52	7.4 µg/m³	10h	1
2026-07-10	30	11–47	7.3 µg/m³	8h	1
2026-07-09	35	23–45	8.3 µg/m³	13h	1
2026-07-08	39	20–53	9.3 µg/m³	9h	1

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