SmogRank / World / Japan / Hyōgo / December 2025

Most polluted cities in Hyōgo, Japan, December 2025

17 cities in Hyōgo, Japan ranked by their average PM2.5 over the 31 days. Worst: Higashinozoe at 11.2 µg/m³, #1,086 of 2,960 cities in the world. Cleanest: Sumoto at 6.4. A city needs measurements on 70% of the days to be ranked.

Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.

← Higashinozoe 0% 0.75%0

Every city in Hyōgo, Japan ranked for December 2025, one column each, ranked by unhealthy days: height is the share of its measured days that were unhealthy, colour its average. Point at it to read a city; tap to open it.

1Higashinozoe
0%
2Kakogawachō-honmachi
0%
3Akashi
0%
3Ono
0%
5Amagasaki
0%
6Sandachō
0%
7Kariya
0%
8Aioi
0%
9Himeji
0%
10Tatsuno
0%
11Nishiwaki
0%
11Nishinomiya
0%
11Ikaruga
0%
14Kobe
0%
15Takarazuka
0%
16Toyooka
0%
17Sumoto
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, December 2025 · All cities in Japan, December 2025 · Hyōgo now

Use this board

SmogRank, most polluted cities in Hyōgo, Japan, PM2.5, December 2025, smogrank.com/jp/region/hyogo/history/2025-12 (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.