What is the air quality trend in Honchō?

Over the past 15 days, Honchō had an average AQI of 50 based on station measurements. The worst day was 2026-09-02 with AQI 90.

How is Honchō air quality measured?

Air quality in Honchō 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 Honchō, Japan

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

Historical PM2.5 and AQI trend from monitoring stations near Honchō, Japan.

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

221h

PM2.5 Station

221h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-05	44	17–68	11.7 µg/m³	8h	1
2026-09-04	30	5–117	8.2 µg/m³	19h	2
2026-09-03	46	5–161	14.7 µg/m³	14h	2
2026-09-02	90	10–365	51.3 µg/m³	17h	2
2026-09-01	79	25–192	31.6 µg/m³	14h	2
2026-08-31	62	20–229	23.5 µg/m³	19h	2
2026-08-30	64	19–162	21.2 µg/m³	18h	2
2026-08-29	51	9–158	16.0 µg/m³	18h	2
2026-08-28	44	5–82	12.4 µg/m³	14h	2
2026-08-27	26	4–57	6.4 µg/m³	21h	1
2026-08-26	44	17–184	15.9 µg/m³	15h	2
2026-08-25	35	9–117	10.5 µg/m³	9h	2
2026-08-24	44	23–80	11.6 µg/m³	17h	2
2026-08-23	62	25–127	19.0 µg/m³	16h	2
2026-08-22	34	21–46	8.0 µg/m³	2h	1

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