What is the air quality trend in Zion?

Over the past 3 days, Zion had an average AQI of 23 based on station measurements. The worst day was 2026-10-20 with AQI 30.

How is Zion air quality measured?

Air quality in Zion 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 Zion, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

30h

PM2.5 Station

30h · 1 station

Temperature GFS model

7pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	16	2–29	3.8 µg/m³	4h	1
2026-10-20	30	20–42	7.1 µg/m³	16h	1
2026-10-19	23	14–43	5.6 µg/m³	10h	1

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