What is the air quality trend in Marshall?

Over the past 14 days, Marshall had an average AQI of 41 based on station measurements. The worst day was 2026-07-16 with AQI 55.

How is Marshall air quality measured?

Air quality in Marshall 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 Marshall, United States

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

141h

PM2.5 Station

141h · 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	3–118	15.6 µg/m³	7h	1
2026-07-20	39	15–68	10.4 µg/m³	9h	1
2026-07-19	47	13–78	13.0 µg/m³	13h	1
2026-07-18	46	19–68	12.1 µg/m³	9h	1
2026-07-17	38	21–58	9.4 µg/m³	8h	1
2026-07-16	55	15–80	15.7 µg/m³	11h	1
2026-07-15	39	4–80	10.7 µg/m³	11h	1
2026-07-14	42	13–81	11.3 µg/m³	14h	1
2026-07-13	29	7–78	7.7 µg/m³	10h	1
2026-07-12	38	24–55	9.2 µg/m³	7h	1
2026-07-11	41	6–87	11.3 µg/m³	12h	1
2026-07-10	30	5–58	7.3 µg/m³	13h	1
2026-07-09	47	1–87	13.1 µg/m³	5h	1
2026-07-08	31	7–55	7.6 µg/m³	12h	1

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