What is the air quality trend in Siloam Springs?

Over the past 14 days, Siloam Springs had an average AQI of 44 based on station measurements. The worst day was 2026-07-18 with AQI 64.

How is Siloam Springs air quality measured?

Air quality in Siloam Springs 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 Siloam Springs, United States

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

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

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

220h

PM2.5 Station

220h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	52	27–134	14.3 µg/m³	12h	1
2026-07-20	52	16–115	15.1 µg/m³	15h	1
2026-07-19	59	18–163	20.4 µg/m³	16h	1
2026-07-18	64	12–162	22.5 µg/m³	13h	1
2026-07-17	60	20–212	23.8 µg/m³	19h	1
2026-07-16	62	26–308	26.4 µg/m³	18h	1
2026-07-15	43	3–70	10.8 µg/m³	16h	1
2026-07-14	32	9–46	7.7 µg/m³	15h	1
2026-07-13	29	13–42	7.0 µg/m³	17h	1
2026-07-12	30	17–38	7.3 µg/m³	12h	1
2026-07-11	33	20–45	7.8 µg/m³	17h	1
2026-07-10	32	14–45	7.7 µg/m³	16h	1
2026-07-09	38	16–68	9.5 µg/m³	15h	1
2026-07-08	32	6–59	7.9 µg/m³	19h	1

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