SmogRank / World / Asia / Japan / Hokkaido

Most polluted cities in Hokkaido, Japan

9 measured cities, this year; 9 above the WHO annual guideline. Worst: Chitose at 8.4 µg/m³, #1,528 in the world.

Hokkaido: 9 measured citiesAomori: 3 measured cities#9 Kushiro: 5.6 µg/m³#8 Tomakomai: 6.1 µg/m³#7 Obihiro: 6.5 µg/m³#5 Sapporo: 6.7 µg/m³#6 Kitami: 6.7 µg/m³#4 Hakodate: 7.1 µg/m³#3 Asahikawa: 7.2 µg/m³#2 Muroran: 8.1 µg/m³#1 Chitose: 8.4 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
← Chitose 8.4 µg/m³ 7.5 µg/m³5 WHO annual guideline0
Every measured city in Hokkaido, Japan, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1Chitose 471.7×▼267
  2. 2Muroran 451.6×▼266
  3. 3Asahikawa 401.4×▼276
  4. 4Hakodate 391.4×▼276
  5. 5Sapporo 371.3×▼279
  6. 6Kitami 371.3×▼278
  7. 7Obihiro 361.3×▼284
  8. 8Tomakomai 341.2×▼277
  9. 9Kushiro 311.1×▼281
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

Estimated: cities without a monitor

Hokkaido cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City7-day estimateBand
Ebetsu≈ 4 µg/m³Good
Otaru≈ 5 µg/m³Good
Iwamizawa≈ 4 µg/m³Good
Eniwa≈ 5 µg/m³Good
Kitahiroshima≈ 5 µg/m³Good
Ishikari≈ 5 µg/m³Good
Noboribetsu≈ 4 µg/m³Good
Hokuto≈ 4 µg/m³Good
Takikawa≈ 4 µg/m³Good
Otofuke≈ 3 µg/m³Good
Kamiiso≈ 4 µg/m³Good
Abashiri≈ 3 µg/m³Good
Date≈ 4 µg/m³Good
Wakkanai≈ 5 µg/m³Good
Nemuro≈ 6 µg/m³Good
Bibai≈ 3 µg/m³Good
Honchō≈ 4 µg/m³Good
Nayoro≈ 3 µg/m³Good
Makubetsu≈ 4 µg/m³Good
Rumoi≈ 4 µg/m³Good
Fukagawa≈ 4 µg/m³Good
Shimo-furano≈ 3 µg/m³Good
Sarubetsu≈ 3 µg/m³Good
Nakashibetsu≈ 3 µg/m³Good
Mombetsu≈ 3 µg/m³Good
Motomachi≈ 3 µg/m³Good
Shizunai-furukawachō≈ 4 µg/m³Good
Shibetsu≈ 4 µg/m³Good
Furano≈ 3 µg/m³Good
Sunagawa≈ 4 µg/m³Good
Minamishibetsuchō≈ 3 µg/m³Good
Engaru≈ 2 µg/m³Good
Ashibetsu≈ 4 µg/m³Good
Yoichi≈ 4 µg/m³Good
Memuro-minami≈ 4 µg/m³Good
Shibetsu≈ 3 µg/m³Good
Shiraoi≈ 4 µg/m³Good
Tōbetsu≈ 4 µg/m³Good
Yakumo≈ 4 µg/m³Good
Kutchan≈ 4 µg/m³Good

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SmogRank, most polluted cities in Hokkaido, Japan, PM2.5, this year to 2 Oct 2026, 08:00 UTC, smogrank.com/jp/region/hokkaido?w=year.

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Updated 2026-10-02 08:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.