SmogRank / World / Japan / Hyōgo / March 2025

Most polluted cities in Hyōgo, Japan, March 2025

17 cities in Hyōgo, Japan ranked by their average PM2.5 over the 31 days. Worst: Higashinozoe at 15.7 µg/m³, #882 of 2,809 cities in the world. Cleanest: Sumoto at 8.9. A city needs measurements on 70% of the days to be ranked.

About 83K people in these 8 cities breathed unhealthy air on an average day of March 2025.

Ranked by people: each city's population times its share of unhealthy days, those with a daily mean over 35.4 µg/m³ (US AQI 101+). That is how many people living there breathed unhealthy air on an average day. Only cities measured at 2 or more places at least 3 km apart are ranked: one monitor shouldn't speak for a whole city. Population is the city itself, not its wider metro area.

← Kobe 49.2K 40K0
Every city in Hyōgo, Japan ranked for March 2025 with monitors in two or more places, one column each, ranked by people breathing unhealthy air: height is people on an average day, colour its average. Point at it to read a city; tap to open it.
  1. 1Kobe
    49.2K
  2. 2Kakogawachō-honmachi
    17.5K
  3. 3Akashi
    9.79K
  4. 4Sandachō
    4.29K
  5. 5Higashinozoe
    2.17K
  6. 6Himeji
    0
  7. 7Tatsuno
    0
  8. 8Takarazuka
    0
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

All cities in the world, March 2025 · All cities in Japan, March 2025 · Hyōgo now

Use this board

SmogRank, most polluted cities in Hyōgo, Japan, PM2.5, March 2025, smogrank.com/jp/region/hyogo/history/2025-03 (accessed 6 Oct 2026).

Download top 10 (PNG)

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.