What is the air quality trend in Longview?

Over the past 8 days, Longview had an average AQI of 41 based on station measurements. The worst day was 2026-08-05 with AQI 94.

How is Longview air quality measured?

Air quality in Longview 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 Longview, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

158h

PM2.5 Station

158h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-08	39	25–56	9.5 µg/m³	10h	2
2026-08-07	35	23–54	8.5 µg/m³	20h	2
2026-08-06	54	33–94	15.0 µg/m³	24h	2
2026-08-05	94	65–117	32.1 µg/m³	24h	2
2026-08-04	75	51–115	23.5 µg/m³	24h	2
2026-08-03	17	4–45	4.1 µg/m³	18h	2
2026-08-02	12	3–18	2.9 µg/m³	24h	2
2026-08-01	4	1–10	0.8 µg/m³	14h	1

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