SmogRank / Japan / Ishikawa / Anamizu

Anamizu, month by month

Anamizu has a measured daily mean on 688 days since 30 July 2023. Its worst month was March 2026, at 54 US AQI (10.7 µg/m³), 1,483rd of 2,971 cities on that month's world ranking. Its cleanest was January 2026, at 22 US AQI (4.0 µg/m³).

Every month since 2023

202639 so far262 days measured2,217th of 2,791 in the world
Jan22#2,493Feb38#2,282Mar54#1,483Apr42#1,717May41#1,507Jun33#1,880Jul51#1,581Aug38#2,142Sep28#2,284Oct27#2,257
202539 for the year287 days measured2,091st of 2,681 in the world
JannoneFeb2 daysMar51#1,735Apr43#1,841May47#1,206Jun49#1,652Jul48#1,588Aug38#2,217Sep26#2,768Oct26#2,219Nov32#2,247Dec24#2,821
2024too few days for a mean (a year needs 257)11 days measured
Jan11 daysFebnoneMarnoneAprnoneMaynoneJunnoneJulnoneAugnoneSepnoneOctnoneNovnoneDecnone
2023too few days for a mean (a year needs 256)128 days measured
JanFebMarAprMayJunJul2 daysAug36#1,529Sep26#2,040Oct23#1,900Nov30#1,886Dec17 days
Each square is a month's mean PM2.5 in US AQI from Anamizu's measured days, with its place on that month's world ranking under it. A month has a mean once 70% of its days are measured, the rule the monthly rankings use; under that, the square gives the days measured. Each square opens that month's ranking with Anamizu marked; each year, the year's. A dashed square is the running month, so far.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Months without a mean, and why

16 months
MonthWhy
Feb 20252 of 28 days measured; a month needs 20. The others: 26 with under 18 hours of readings or readings that failed our checks.
Jan 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Dec 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Nov 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Oct 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Sep 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Aug 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jul 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jun 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
May 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Apr 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Mar 2024No day measured. The others: 1 missing from OpenAQ's archive, 30 with under 18 hours of readings or readings that failed our checks.
Feb 2024No day measured. The others: 1 missing from OpenAQ's archive, 28 with under 18 hours of readings or readings that failed our checks.
Jan 202411 of 31 days measured; a month needs 22. The others: 20 with under 18 hours of readings or readings that failed our checks.
Dec 202317 of 31 days measured; a month needs 22. The others: 14 with under 18 hours of readings or readings that failed our checks.
Jul 20232 of 31 days measured; a month needs 22.

A day counts once 18 hours of it are measured; a month needs 70% of its days.

Anamizu's worst months

MonthUS AQIDays measuredWorld rank
March 2026 5410.7 µg/m³24 of 311,483rdof 2,971
March 2025 519.2 µg/m³29 of 311,735thof 2,862
July 2026 519.1 µg/m³31 of 311,581stof 2,784
June 2025 498.8 µg/m³30 of 301,652ndof 2,508
July 2025 488.7 µg/m³31 of 311,588thof 2,889
May 2025 478.5 µg/m³31 of 311,206thof 2,826

Monthly means over the days measured; finished months only. World rank: its place on that month's world ranking of every city with enough days. Each month opens that ranking.

Anamizu's worst days

DayUS AQI
24 Mar 2026 8024.9 µg/m³
4 Jul 2025 7723.3 µg/m³
21 Mar 2026 7522.0 µg/m³
26 Mar 2025 7521.9 µg/m³
30 Mar 2026 7421.5 µg/m³
25 Mar 2025 7421.4 µg/m³
9 Jun 2025 6918.8 µg/m³
5 Jul 2025 6918.5 µg/m³
21 Jun 2025 6818.0 µg/m³
21 May 2025 6717.9 µg/m³

Daily means, the highest since 30 Jul 2023; the WHO's daily guideline is 15 µg/m³. Each date opens that day's world ranking, and each episode the bad-air spell it was part of.

Use this history

SmogRank, PM2.5 monthly and daily means, Anamizu, Japan, 30 Jul 2023 – 12 Oct 2026. Monitor data from Ministry of the Environment Air Pollutant Wide Area Monitoring System via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/jp/anamizu/history (accessed 12 Oct 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.

Anamizu now: the last 24 hours, its ranks today and the last 12 months day by day.

Updated 2026-10-12 20:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver), no reuse terms published (why we use them).