SmogRank / Japan / Hyōgo / Higashinozoe
Higashinozoe, month by month
Higashinozoe has a measured daily mean on 1,166 days since 28 July 2023. Its worst month was March 2025, at 63 US AQI (15.7 µg/m³), 881st of 2,862 cities on that month's world ranking. Its cleanest was September 2026, at 33 US AQI (6.0 µg/m³). 2025 averaged 57 US AQI (12.5 µg/m³), against 51 US AQI (9.2 µg/m³) in 2024.
Every month since 2023
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
1 month
| Month | Why |
|---|---|
| Jul 2023 | 4 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.
Higashinozoe's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| March 2025 | 6315.7 µg/m³ | 881stof 2,862 | Japan and South Korea, March 2025 Japan and South Korea, February and March 2025 |
| July 2025 | 6315.3 µg/m³ | 383rdof 2,889 | Japan and South Korea, June and July 2025 |
| August 2025 | 6214.8 µg/m³ | 373rdof 2,901 | – |
| February 2026 | 6114.4 µg/m³ | 815thof 2,866 | South Korea and Japan, 10 to 15 February 2026 Japan, 14 to 15 February 2026 |
| July 2026 | 6114.2 µg/m³ | 575thof 2,784 | Japan and South Korea, July 2026 |
| January 2025 | 6013.9 µg/m³ | 559thof 2,474 | Japan and South Korea, 31 January to 1 February 2025 Japan and South Korea, 17 to 24 January 2025 |
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.
Higashinozoe's worst days
| Day | US AQI | Episode |
|---|---|---|
| 2 Mar 2025 | 13750.1 µg/m³ | Japan and South Korea, February and March 2025 |
| 18 Apr 2024 | 13147.5 µg/m³ | Japan and South Korea, April 2024 |
| 3 Jul 2025 | 12143.5 µg/m³ | Japan and South Korea, June and July 2025 |
| 23 Jan 2025 | 11842.3 µg/m³ | Japan and South Korea, 17 to 24 January 2025 |
| 4 Jul 2025 | 11340.4 µg/m³ | Japan and South Korea, June and July 2025 |
| 5 Jul 2025 | 11340.4 µg/m³ | Japan and South Korea, June and July 2025 |
| 1 Mar 2025 | 11240.0 µg/m³ | Japan and South Korea, February and March 2025 |
| 28 Feb 2025 | 10738.1 µg/m³ | Japan and South Korea, February and March 2025 |
| 2 Jul 2025 | 10236.0 µg/m³ | Japan and South Korea, June and July 2025 |
| 1 Feb 2025 | 9934.7 µg/m³ | Japan and South Korea, 31 January to 1 February 2025 |
Daily means, the highest since 28 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, Higashinozoe, Japan, 28 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/higashinozoe/history (accessed 12 Oct 2026).
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.
Higashinozoe 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).