What is the air quality trend in Hannō?

Over the past 14 days, Hannō had an average AQI of 38 based on station measurements. The worst day was with AQI .

How is Hannō air quality measured?

Air quality in Hannō 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 Hannō, Japan

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

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

Current AQI
Good

48 Hours 7 Days 14 Days 20 Days

PM2.5 Trend

259h · 8 stations

Daily Summary

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-04-10	35	15–63	8.7 µg/m³	15.4	20h	11
2026-04-09	31	13–40	7.4 µg/m³	13.0	18h	11
2026-04-08	36	27–44	8.6 µg/m³	9.9	9h	11
2026-04-07	30	6–63	7.4 µg/m³	11.1	24h	11
2026-04-06	54	45–63	13.5 µg/m³	19.7	18h	13
2026-04-04	39	16–59	9.7 µg/m³	15.2	15h	12
2026-04-03	36	27–55	8.7 µg/m³	11.9	24h	12
2026-04-02	18	6–33	4.4 µg/m³	6.0	23h	11
2026-04-01	16	5–31	3.9 µg/m³	5.8	23h	10
2026-03-31	24	6–43	5.8 µg/m³	10.4	23h	12
2026-03-30	43	24–113	12.6 µg/m³	18.5	11h	11
2026-03-29	67	58–97	19.6 µg/m³	25.1	23h	12
2026-03-28	59	38–119	16.4 µg/m³	21.1	24h	11
2026-03-27	47	38–63	11.9 µg/m³	15.3	4h	11

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