SmogRank / World / Asia / Japan / Aichi

Most polluted cities in Aichi, Japan

23 measured cities, last 7 days; 0 above the WHO 24-hour guideline. Worst: Owariasahi at 10.4 µg/m³, #706 in the world.

Mie: 16 measured citiesNagano: 10 measured citiesShizuoka: 18 measured citiesFukui: 6 measured citiesAichi: 23 measured citiesGifu: 15 measured cities#23 Shinshiro: 5.4 µg/m³#22 Nisshin: 7.1 µg/m³#20 Inuyama: 7.3 µg/m³#21 Ichinomiya: 7.3 µg/m³#18 Toyohashi: 7.6 µg/m³#19 Gamagōri: 7.6 µg/m³#17 Minamichita: 7.8 µg/m³#16 Seto: 7.9 µg/m³#14 Toyota: 8.0 µg/m³#15 Anjō: 8.0 µg/m³#12 Chiryū: 8.1 µg/m³#13 Kaminoma: 8.1 µg/m³#11 Tahara: 8.5 µg/m³#10 Ama: 8.6 µg/m³#9 Nagoya: 8.7 µg/m³#8 Nishio: 8.8 µg/m³#7 Handa: 9.0 µg/m³#6 Kariya: 9.1 µg/m³#5 Okazaki: 9.5 µg/m³#4 Tōkai: 9.7 µg/m³#2 Tokoname: 9.9 µg/m³#3 Hekinan: 9.9 µg/m³#1 Owariasahi: 10.4 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
← Owariasahi 10.4 WHO 24-hour guideline
Every measured city in Aichi, Japan, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1Owariasahi 53▼227
  2. 2Tokoname 52▼251
  3. 3Hekinan 52▼232
  4. 4Tōkai 52▼224
  5. 5Okazaki 52▼242
  6. 6Kariya 51▼303
  7. 7Handa 50▼288
  8. 8Nishio 49▼283
  9. 9Nagoya 48▼295
  10. 10Ama 48▼251
  11. 11Tahara 47▼357
  12. 12Chiryū 45▼308
  13. 13Kaminoma 45▼264
  14. 14Toyota 44▼261
  15. 15Anjō 44▼256
  16. 16Seto 44▼310
  17. 17Minamichita 43▼286
  18. 18Toyohashi 42▼335
  19. 19Gamagōri 42▼303
  20. 20Inuyama 41▼392
  21. 21Ichinomiya 41▼298
  22. 22Nisshin 39▼322
  23. 23Shinshiro 30▼462
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

Aichi 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
Kasugai≈ 8 µg/m³Good
Toyokawa≈ 6 µg/m³Good
Komaki≈ 8 µg/m³Good
Inazawa≈ 8 µg/m³Good
Kōnan≈ 9 µg/m³Good
Ōbu≈ 11 µg/m³Moderate
Kitanagoya≈ 9 µg/m³Good
Chita≈ 11 µg/m³Moderate
Toyoake≈ 11 µg/m³Moderate
Tsushima≈ 9 µg/m³Good
Kiyosu≈ 9 µg/m³Good
Miyoshi≈ 10 µg/m³Moderate
Aisai≈ 9 µg/m³Good
Nagakute≈ 9 µg/m³Good
Ogawa≈ 9 µg/m³Moderate
Takahama≈ 9 µg/m³Moderate
Iwakura≈ 9 µg/m³Good
Morowa≈ 10 µg/m³Moderate
Taketoyo≈ 9 µg/m³Good
Kōta≈ 8 µg/m³Good
Kanie≈ 9 µg/m³Good
Fusō≈ 12 µg/m³Moderate
Kuroda≈ 9 µg/m³Good
Ōharu≈ 9 µg/m³Good
Ōguchi≈ 12 µg/m³Moderate
Ishiki≈ 9 µg/m³Good
Sobue≈ 9 µg/m³Good
Toyohama≈ 9 µg/m³Moderate
Toyoyama≈ 8 µg/m³Good

Use this board

SmogRank, most polluted cities in Aichi, Japan, PM2.5, last 7 days to 2 Oct 2026, 04:00 UTC, smogrank.com/jp/region/aichi?w=7d.

Download top 10 (PNG)

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.

Updated 2026-10-02 04:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.