What is the air quality trend in Pendleton?

Over the past 21 days, Pendleton had an average AQI of 18 based on station measurements. The worst day was 2026-05-28 with AQI 28.

How is Pendleton air quality measured?

Air quality in Pendleton 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 Pendleton, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

438h

PM2.5 Station

438h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	15	10–18	3.7 µg/m³	3h	2
2026-05-29	21	9–51	5.2 µg/m³	21h	2
2026-05-28	28	11–56	6.7 µg/m³	22h	2
2026-05-27	16	7–30	3.9 µg/m³	21h	2
2026-05-26	11	4–23	2.6 µg/m³	22h	2
2026-05-25	20	9–33	4.7 µg/m³	23h	2
2026-05-24	17	6–30	4.0 µg/m³	23h	2
2026-05-23	18	7–37	4.3 µg/m³	23h	2
2026-05-22	19	6–39	4.7 µg/m³	22h	2
2026-05-21	23	11–44	5.5 µg/m³	23h	2
2026-05-20	18	7–69	4.4 µg/m³	24h	2
2026-05-19	15	7–30	3.7 µg/m³	20h	2
2026-05-18	17	3–34	4.1 µg/m³	23h	2
2026-05-17	16	5–47	3.9 µg/m³	23h	2
2026-05-16	16	8–50	3.7 µg/m³	18h	2
2026-05-15	18	6–80	4.5 µg/m³	23h	2
2026-05-14	17	7–36	4.1 µg/m³	21h	2
2026-05-13	20	7–49	4.8 µg/m³	21h	2
2026-05-12	19	9–44	4.7 µg/m³	22h	2
2026-05-11	16	5–32	3.8 µg/m³	21h	2
2026-05-10	19	8–37	4.6 µg/m³	19h	2

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