What is the air quality trend in Seaside?

Over the past 15 days, Seaside had an average AQI of 27 based on station measurements. The worst day was 2026-05-17 with AQI 42.

How is Seaside air quality measured?

Air quality in Seaside 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 Seaside, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

334h

PM2.5 Station

334h · 33 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	15	14–16	3.6 µg/m³	6h	34
2026-05-29	18	14–23	4.4 µg/m³	24h	33
2026-05-28	26	13–46	6.3 µg/m³	24h	31
2026-05-27	23	19–37	5.5 µg/m³	24h	33
2026-05-26	20	15–25	4.9 µg/m³	24h	33
2026-05-25	20	16–25	4.9 µg/m³	24h	34
2026-05-24	24	21–28	5.8 µg/m³	24h	34
2026-05-23	28	25–33	6.7 µg/m³	24h	33
2026-05-22	29	20–42	6.9 µg/m³	24h	33
2026-05-21	37	32–42	8.9 µg/m³	24h	34
2026-05-20	35	28–50	8.3 µg/m³	24h	34
2026-05-19	29	23–35	6.9 µg/m³	24h	34
2026-05-18	26	18–40	6.3 µg/m³	24h	34
2026-05-17	42	34–50	10.1 µg/m³	24h	33
2026-05-16	40	36–44	9.6 µg/m³	16h	33

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