What is the air quality trend in Anacortes?

Over the past 15 days, Anacortes had an average AQI of 11 based on station measurements. The worst day was 2026-10-07 with AQI 20.

How is Anacortes air quality measured?

Air quality in Anacortes 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 Anacortes, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

331h

PM2.5 Station

331h · 3 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	6	6–6	1.4 µg/m³	1h	3
2026-10-20	11	5–16	2.5 µg/m³	24h	3
2026-10-19	9	3–21	2.1 µg/m³	24h	3
2026-10-18	8	4–15	2.0 µg/m³	24h	3
2026-10-17	13	6–29	3.2 µg/m³	24h	3
2026-10-16	14	8–41	3.4 µg/m³	19h	3
2026-10-15	17	6–32	4.1 µg/m³	24h	3
2026-10-14	10	5–29	2.4 µg/m³	24h	3
2026-10-13	14	8–45	3.2 µg/m³	24h	3
2026-10-12	8	2–17	1.8 µg/m³	24h	3
2026-10-11	6	3–24	1.5 µg/m³	24h	3
2026-10-10	9	5–19	2.2 µg/m³	24h	3
2026-10-09	9	2–27	2.1 µg/m³	24h	3
2026-10-08	18	9–29	4.2 µg/m³	24h	3
2026-10-07	20	11–36	4.8 µg/m³	23h	3

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