What is the air quality trend in Simpsonville?

Over the past 8 days, Simpsonville had an average AQI of 57 based on station measurements. The worst day was 2026-07-17 with AQI 78.

How is Simpsonville air quality measured?

Air quality in Simpsonville 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 Simpsonville, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

134h

PM2.5 Station

134h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	34	34–34	8.2 µg/m³	1h	2
2026-07-21	54	25–97	14.6 µg/m³	15h	2
2026-07-20	71	24–153	22.4 µg/m³	17h	2
2026-07-19	49	23–118	14.3 µg/m³	18h	2
2026-07-18	60	12–161	19.5 µg/m³	16h	2
2026-07-17	78	20–223	34.7 µg/m³	24h	2
2026-07-16	70	18–357	36.6 µg/m³	22h	2
2026-07-15	43	3–100	11.0 µg/m³	21h	1

Back to Simpsonville Air Quality