What is the air quality trend in Horizon City?

Over the past 8 days, Horizon City had an average AQI of 61 based on station measurements. The worst day was 2026-08-05 with AQI 78.

How is Horizon City air quality measured?

Air quality in Horizon City 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 Horizon City, United States

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 3 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-08-08	67	46–107	19.8 µg/m³	83.2	6h	16
2026-08-07	55	48–63	13.9 µg/m³	51.1	24h	17
2026-08-06	75	56–128	23.4 µg/m³	193.2	24h	18
2026-08-05	78	50–168	25.6 µg/m³	187.4	24h	17
2026-08-04	61	46–75	16.8 µg/m³	72.2	24h	18
2026-08-03	58	43–70	15.8 µg/m³	119.6	24h	17
2026-08-02	42	31–53	10.2 µg/m³	58.8	24h	17
2026-08-01	54	45–72	13.7 µg/m³	128.1	16h	17

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