SmogRank / Japan / Osaka

Air quality in Osaka

Osaka, Japan. PM2.5 from 19 reference monitors, updated hourly.

12.0 µg/m³
Moderate

Latest hour (03:00 UTC), 0.8× the WHO 24-hour guideline.

Rank

24 h
–
not enough data
7 days
#972
of 2,330 · 7.9 µg/m³
30 days
#1,120
of 2,327 · 6.3 µg/m³
Year
#719
of 2,160 · 9.7 µg/m³

Last 4 days, hour by hour

15302026-09-30 23:00 UTC: 8.0 µg/m³2026-10-01 00:00 UTC: 10.0 µg/m³2026-10-01 01:00 UTC: 9.0 µg/m³2026-10-01 02:00 UTC: 10.0 µg/m³2026-10-01 03:00 UTC: 12.0 µg/m³Sep 28Sep 29Sep 30Oct 1

Times in UTC. Dashed line: WHO 24-hour guideline (15 µg/m³).

Every day for a year

SepNovDecJanFebMarAprMayJunJulAugSepMonWedFri2025-09-29: 7.1 µg/m³2025-09-30: 5.8 µg/m³2025-10-01: 9.0 µg/m³2025-10-02: 7.4 µg/m³2025-10-03: 8.8 µg/m³2025-10-04: 4.3 µg/m³2025-10-05: 4.9 µg/m³2025-10-06: 7.1 µg/m³2025-10-07: 9.2 µg/m³2025-10-08: 7.0 µg/m³2025-10-09: 6.3 µg/m³2025-10-10: 7.1 µg/m³2025-10-11: 4.1 µg/m³2025-10-12: 3.7 µg/m³2025-10-13: 4.5 µg/m³2025-10-14: 7.4 µg/m³2025-10-15: 3.4 µg/m³2025-10-16: 5.2 µg/m³2025-10-17: 7.0 µg/m³2025-10-18: 6.8 µg/m³2025-10-19: 3.2 µg/m³2025-10-20: 3.6 µg/m³2025-10-21: 3.7 µg/m³2025-10-22: 4.9 µg/m³2025-10-23: 5.4 µg/m³2025-10-24: 6.3 µg/m³2025-10-25: 5.7 µg/m³2025-10-26: 3.1 µg/m³2025-10-27: 7.7 µg/m³2025-10-28: 8.0 µg/m³2025-10-29: 8.3 µg/m³2025-10-30: 11.1 µg/m³2025-10-31: 7.7 µg/m³2025-11-01: 6.1 µg/m³2025-11-02: 10.0 µg/m³2025-11-03: 5.9 µg/m³2025-11-04: 6.5 µg/m³2025-11-05: 6.6 µg/m³2025-11-06: 6.9 µg/m³2025-11-07: 10.7 µg/m³2025-11-08: 13.5 µg/m³2025-11-09: 8.1 µg/m³2025-11-10: 11.9 µg/m³2025-11-11: 9.3 µg/m³2025-11-12: 8.8 µg/m³2025-11-13: 14.1 µg/m³2025-11-14: 14.4 µg/m³2025-11-15: 10.2 µg/m³2025-11-16: 9.5 µg/m³2025-11-17: 13.6 µg/m³2025-11-18: 7.6 µg/m³2025-11-19: 4.6 µg/m³2025-11-20: 9.5 µg/m³2025-11-21: 15.0 µg/m³2025-11-22: 10.8 µg/m³2025-11-23: 11.6 µg/m³2025-11-24: 19.6 µg/m³2025-11-25: 15.5 µg/m³2025-11-26: 12.7 µg/m³2025-11-27: 19.4 µg/m³2025-11-28: 12.8 µg/m³2025-11-29: 7.4 µg/m³2025-11-30: 12.2 µg/m³2025-12-01: 16.2 µg/m³2025-12-02: 17.9 µg/m³2025-12-03: 7.8 µg/m³2025-12-04: 5.2 µg/m³2025-12-05: 5.0 µg/m³2025-12-06: 8.6 µg/m³2025-12-07: 13.6 µg/m³2025-12-08: 16.9 µg/m³2025-12-09: 7.2 µg/m³2025-12-10: 9.4 µg/m³2025-12-11: 12.3 µg/m³2025-12-12: 3.8 µg/m³2025-12-13: 4.9 µg/m³2025-12-14: 7.5 µg/m³2025-12-15: 4.1 µg/m³2025-12-16: 10.1 µg/m³2025-12-17: 16.8 µg/m³2025-12-18: 4.7 µg/m³2025-12-19: 9.6 µg/m³2025-12-20: 7.3 µg/m³2025-12-21: 6.5 µg/m³2025-12-22: 5.3 µg/m³2025-12-23: 8.6 µg/m³2025-12-24: 8.3 µg/m³2025-12-25: 9.7 µg/m³2025-12-26: 4.0 µg/m³2025-12-27: 5.9 µg/m³2025-12-28: 10.1 µg/m³2025-12-29: 12.5 µg/m³2025-12-30: 16.0 µg/m³2025-12-31: 5.4 µg/m³2026-01-01: 4.2 µg/m³2026-01-02: 3.6 µg/m³2026-01-03: 2.4 µg/m³2026-01-04: 8.2 µg/m³2026-01-05: 13.4 µg/m³2026-01-06: 4.1 µg/m³2026-01-07: 11.5 µg/m³2026-01-08: 7.2 µg/m³2026-01-09: no data2026-01-10: no data2026-01-11: no data2026-01-12: no data2026-01-13: 11.2 µg/m³2026-01-14: 8.4 µg/m³2026-01-15: 20.8 µg/m³2026-01-16: no data2026-01-17: no data2026-01-18: no data2026-01-19: no data2026-01-20: 8.5 µg/m³2026-01-21: 4.9 µg/m³2026-01-22: 3.7 µg/m³2026-01-23: 7.3 µg/m³2026-01-24: no data2026-01-25: no data2026-01-26: 4.3 µg/m³2026-01-27: 15.7 µg/m³2026-01-28: 7.8 µg/m³2026-01-29: no data2026-01-30: 5.6 µg/m³2026-01-31: 4.1 µg/m³2026-02-01: 11.1 µg/m³2026-02-02: 14.5 µg/m³2026-02-03: 6.6 µg/m³2026-02-04: 14.1 µg/m³2026-02-05: 20.7 µg/m³2026-02-06: 21.5 µg/m³2026-02-07: 4.4 µg/m³2026-02-08: 3.8 µg/m³2026-02-09: 8.0 µg/m³2026-02-10: 17.2 µg/m³2026-02-11: 14.7 µg/m³2026-02-12: 23.1 µg/m³2026-02-13: 25.3 µg/m³2026-02-14: 25.8 µg/m³2026-02-15: 20.4 µg/m³2026-02-16: 20.7 µg/m³2026-02-17: 6.8 µg/m³2026-02-18: 10.3 µg/m³2026-02-19: 6.3 µg/m³2026-02-20: 14.3 µg/m³2026-02-21: 21.0 µg/m³2026-02-22: 13.7 µg/m³2026-02-23: 21.4 µg/m³2026-02-24: 17.3 µg/m³2026-02-25: 6.9 µg/m³2026-02-26: 4.6 µg/m³2026-02-27: 8.7 µg/m³2026-02-28: 4.7 µg/m³2026-03-01: 9.8 µg/m³2026-03-02: 10.5 µg/m³2026-03-03: 3.1 µg/m³2026-03-04: 3.6 µg/m³2026-03-05: 6.9 µg/m³2026-03-06: 10.6 µg/m³2026-03-07: 9.8 µg/m³2026-03-08: 8.3 µg/m³2026-03-09: 10.8 µg/m³2026-03-10: 8.0 µg/m³2026-03-11: 8.7 µg/m³2026-03-12: 7.0 µg/m³2026-03-13: 6.2 µg/m³2026-03-14: 3.5 µg/m³2026-03-15: 4.0 µg/m³2026-03-16: 7.1 µg/m³2026-03-17: 12.5 µg/m³2026-03-18: 16.5 µg/m³2026-03-19: 13.5 µg/m³2026-03-20: 21.7 µg/m³2026-03-21: 19.9 µg/m³2026-03-22: 19.8 µg/m³2026-03-23: 14.4 µg/m³2026-03-24: 21.8 µg/m³2026-03-25: 14.0 µg/m³2026-03-26: 4.0 µg/m³2026-03-27: 13.5 µg/m³2026-03-28: 16.6 µg/m³2026-03-29: 23.2 µg/m³2026-03-30: 13.8 µg/m³2026-03-31: 8.0 µg/m³2026-04-01: 5.0 µg/m³2026-04-02: 9.0 µg/m³2026-04-03: 15.4 µg/m³2026-04-04: 10.1 µg/m³2026-04-05: 6.8 µg/m³2026-04-06: 14.4 µg/m³2026-04-07: 12.3 µg/m³2026-04-08: 12.0 µg/m³2026-04-09: 14.0 µg/m³2026-04-10: 11.6 µg/m³2026-04-11: 12.0 µg/m³2026-04-12: 9.6 µg/m³2026-04-13: 12.2 µg/m³2026-04-14: 14.7 µg/m³2026-04-15: 6.9 µg/m³2026-04-16: 9.0 µg/m³2026-04-17: 11.8 µg/m³2026-04-18: 10.3 µg/m³2026-04-19: 10.8 µg/m³2026-04-20: 10.2 µg/m³2026-04-21: 10.2 µg/m³2026-04-22: 11.2 µg/m³2026-04-23: 8.4 µg/m³2026-04-24: 8.0 µg/m³2026-04-25: 9.7 µg/m³2026-04-26: 8.4 µg/m³2026-04-27: 6.2 µg/m³2026-04-28: 12.4 µg/m³2026-04-29: 12.8 µg/m³2026-04-30: 4.7 µg/m³2026-05-01: 4.2 µg/m³2026-05-02: 13.3 µg/m³2026-05-03: 17.1 µg/m³2026-05-04: 6.3 µg/m³2026-05-05: 7.4 µg/m³2026-05-06: 6.2 µg/m³2026-05-07: 6.1 µg/m³2026-05-08: 8.5 µg/m³2026-05-09: 7.0 µg/m³2026-05-10: 7.7 µg/m³2026-05-11: 9.2 µg/m³2026-05-12: 8.1 µg/m³2026-05-13: 8.8 µg/m³2026-05-14: 11.3 µg/m³2026-05-15: 15.0 µg/m³2026-05-16: 15.1 µg/m³2026-05-17: 13.0 µg/m³2026-05-18: 12.2 µg/m³2026-05-19: 12.5 µg/m³2026-05-20: 9.0 µg/m³2026-05-21: 8.9 µg/m³2026-05-22: 4.5 µg/m³2026-05-23: 3.1 µg/m³2026-05-24: 5.5 µg/m³2026-05-25: 7.6 µg/m³2026-05-26: 6.8 µg/m³2026-05-27: 3.9 µg/m³2026-05-28: 4.7 µg/m³2026-05-29: 8.1 µg/m³2026-05-30: 8.6 µg/m³2026-05-31: 12.2 µg/m³2026-06-01: 11.4 µg/m³2026-06-02: 3.9 µg/m³2026-06-03: 3.4 µg/m³2026-06-04: 9.9 µg/m³2026-06-05: 4.7 µg/m³2026-06-06: 7.5 µg/m³2026-06-07: 5.1 µg/m³2026-06-08: 5.6 µg/m³2026-06-09: 7.2 µg/m³2026-06-10: 5.1 µg/m³2026-06-11: 9.7 µg/m³2026-06-12: 14.2 µg/m³2026-06-13: 14.7 µg/m³2026-06-14: 13.2 µg/m³2026-06-15: 7.6 µg/m³2026-06-16: 9.6 µg/m³2026-06-17: 5.2 µg/m³2026-06-18: 5.9 µg/m³2026-06-19: 11.5 µg/m³2026-06-20: 8.7 µg/m³2026-06-21: 6.8 µg/m³2026-06-22: 3.2 µg/m³2026-06-23: 3.4 µg/m³2026-06-24: 6.1 µg/m³2026-06-25: 4.2 µg/m³2026-06-26: 4.3 µg/m³2026-06-27: 2.6 µg/m³2026-06-28: 6.4 µg/m³2026-06-29: 11.4 µg/m³2026-06-30: 18.7 µg/m³2026-07-01: 17.5 µg/m³2026-07-02: 5.6 µg/m³2026-07-03: 9.7 µg/m³2026-07-04: 9.3 µg/m³2026-07-05: 3.2 µg/m³2026-07-06: 2.0 µg/m³2026-07-07: 5.0 µg/m³2026-07-08: 7.0 µg/m³2026-07-09: 8.7 µg/m³2026-07-10: 6.2 µg/m³2026-07-11: 4.6 µg/m³2026-07-12: 9.3 µg/m³2026-07-13: 16.4 µg/m³2026-07-14: 13.9 µg/m³2026-07-15: 15.1 µg/m³2026-07-16: 17.3 µg/m³2026-07-17: 16.0 µg/m³2026-07-18: 19.5 µg/m³2026-07-19: 14.6 µg/m³2026-07-20: 14.8 µg/m³2026-07-21: 21.4 µg/m³2026-07-22: 23.3 µg/m³2026-07-23: 24.7 µg/m³2026-07-24: 15.3 µg/m³2026-07-25: 16.0 µg/m³2026-07-26: 13.9 µg/m³2026-07-27: 9.3 µg/m³2026-07-28: 13.3 µg/m³2026-07-29: 14.5 µg/m³2026-07-30: 16.4 µg/m³2026-07-31: 15.8 µg/m³2026-08-01: 15.8 µg/m³2026-08-02: 13.6 µg/m³2026-08-03: 15.8 µg/m³2026-08-04: 7.2 µg/m³2026-08-05: 6.5 µg/m³2026-08-06: 5.0 µg/m³2026-08-07: 5.6 µg/m³2026-08-08: 6.7 µg/m³2026-08-09: 7.1 µg/m³2026-08-10: 7.2 µg/m³2026-08-11: 7.0 µg/m³2026-08-12: 6.7 µg/m³2026-08-13: 7.6 µg/m³2026-08-14: 12.0 µg/m³2026-08-15: 4.6 µg/m³2026-08-16: 5.2 µg/m³2026-08-17: 5.4 µg/m³2026-08-18: 5.5 µg/m³2026-08-19: 6.0 µg/m³2026-08-20: 7.7 µg/m³2026-08-21: 8.1 µg/m³2026-08-22: 8.6 µg/m³2026-08-23: 9.1 µg/m³2026-08-24: 7.9 µg/m³2026-08-25: 6.0 µg/m³2026-08-26: 5.7 µg/m³2026-08-27: 5.4 µg/m³2026-08-28: 5.6 µg/m³2026-08-29: 7.2 µg/m³2026-08-30: 10.1 µg/m³2026-08-31: 10.7 µg/m³2026-09-01: 9.1 µg/m³2026-09-02: 7.8 µg/m³2026-09-03: 5.8 µg/m³2026-09-04: 3.1 µg/m³2026-09-05: 4.9 µg/m³2026-09-06: 5.0 µg/m³2026-09-07: 3.2 µg/m³2026-09-08: 4.3 µg/m³2026-09-09: 2.4 µg/m³2026-09-10: 6.8 µg/m³2026-09-11: 3.4 µg/m³2026-09-12: 6.8 µg/m³2026-09-13: 6.3 µg/m³2026-09-14: 6.2 µg/m³2026-09-15: 4.6 µg/m³2026-09-16: 4.2 µg/m³2026-09-17: 6.0 µg/m³2026-09-18: 9.1 µg/m³2026-09-19: 8.8 µg/m³2026-09-20: 4.7 µg/m³2026-09-21: 3.9 µg/m³2026-09-22: 9.1 µg/m³2026-09-23: 8.2 µg/m³2026-09-24: 13.3 µg/m³2026-09-25: 7.3 µg/m³2026-09-26: 8.7 µg/m³2026-09-27: 8.1 µg/m³2026-09-28: 7.6 µg/m³2026-09-29: 3.8 µg/m³2026-09-30: 6.3 µg/m³
Good 0–9.0Moderate 9.1+Unhealthy for sensitive groups 35.5+Unhealthy 55.5+Very unhealthy 125.5+Hazardous 225.5+No data

47 of 354 measured days were over the WHO 24-hour guideline.

Daily world rank

#1#2186OctNovDecJanFebMarAprMayJunJulAugSep

Rank on each day's board (1 = most polluted city that day).

2026 against 2025, month by month

15Jan 2025: 11.8 µg/m³Jan 2026: 7.8 µg/m³JanFeb 2025: 11.7 µg/m³Feb 2026: 13.9 µg/m³FebMar 2025: 14.2 µg/m³Mar 2026: 11.3 µg/m³MarApr 2025: 12.7 µg/m³Apr 2026: 10.3 µg/m³AprMay 2025: 10.6 µg/m³May 2026: 8.8 µg/m³MayJun 2025: 12.2 µg/m³Jun 2026: 7.7 µg/m³JunJul 2025: 13.5 µg/m³Jul 2026: 12.9 µg/m³JulAug 2025: 12.9 µg/m³Aug 2026: 7.8 µg/m³AugSep 2025: 8.2 µg/m³Sep 2026: 6.3 µg/m³SepOct 2025: 6.2 µg/m³OctNov 2025: 10.8 µg/m³NovDec 2025: 9.1 µg/m³Dec

Faded bars: 2025. A month shows once it has 10 measured days.

This week against past years

This weekThis week: 7.9 µg/m³7.920252025: 7.1 µg/m³7.1

Mean PM2.5 for 24 Sept to 30 Sept in each year. Dashed line: WHO 24-hour guideline.

Monitors

StationOperatorType
吹田市寿町１－５－５政府標準利用規約（第2.0版） (Government Standard Terms of Use v2.0)Ministry of the Environment Air Pollutant Wide Area Monitoring SystemReference
堺市堺区三宝町５－２８６政府標準利用規約（第2.0版） (Government Standard Terms of Use v2.0)Ministry of the Environment Air Pollutant Wide Area Monitoring SystemReference
大東市谷川１－１－１政府標準利用規約（第2.0版） (Government Standard Terms of Use v2.0)Ministry of the Environment Air Pollutant Wide Area Monitoring SystemReference
大阪市住之江区南港東８－５政府標準利用規約（第2.0版） (Government Standard Terms of Use v2.0)Ministry of the Environment Air Pollutant Wide Area Monitoring SystemReference
大阪市住之江区粉浜1－5－40政府標準利用規約（第2.0版） (Government Standard Terms of Use v2.0)Ministry of the Environment Air Pollutant Wide Area Monitoring SystemReference
大阪市住吉区我孫子東１－４－３２政府標準利用規約（第2.0版） (Government Standard Terms of Use v2.0)Ministry of the Environment Air Pollutant Wide Area Monitoring SystemReference
大阪市城東区新喜多２－４－３５政府標準利用規約（第2.0版） (Government Standard Terms of Use v2.0)Ministry of the Environment Air Pollutant Wide Area Monitoring SystemReference
大阪市大正区平尾２－２１－２８政府標準利用規約（第2.0版） (Government Standard Terms of Use v2.0)Ministry of the Environment Air Pollutant Wide Area Monitoring SystemReference
大阪市旭区新森６－３－１３政府標準利用規約（第2.0版） (Government Standard Terms of Use v2.0)Ministry of the Environment Air Pollutant Wide Area Monitoring SystemReference
大阪市此花区春日出北１－８－４政府標準利用規約（第2.0版） (Government Standard Terms of Use v2.0)Ministry of the Environment Air Pollutant Wide Area Monitoring SystemReference
大阪市淀川区野中北１－１１－２６政府標準利用規約（第2.0版） (Government Standard Terms of Use v2.0)Ministry of the Environment Air Pollutant Wide Area Monitoring SystemReference
大阪市生野区勝山北３－１３－４４政府標準利用規約（第2.0版） (Government Standard Terms of Use v2.0)Ministry of the Environment Air Pollutant Wide Area Monitoring SystemReference
大阪市西区九条南２-１３-１７政府標準利用規約（第2.0版） (Government Standard Terms of Use v2.0)Ministry of the Environment Air Pollutant Wide Area Monitoring SystemReference
守口市京阪本通２－６２政府標準利用規約（第2.0版） (Government Standard Terms of Use v2.0)Ministry of the Environment Air Pollutant Wide Area Monitoring SystemReference
東大阪市西岩田３－３－２政府標準利用規約（第2.0版） (Government Standard Terms of Use v2.0)Ministry of the Environment Air Pollutant Wide Area Monitoring SystemReference
東大阪市高井田元町２－８－２７政府標準利用規約（第2.0版） (Government Standard Terms of Use v2.0)Ministry of the Environment Air Pollutant Wide Area Monitoring SystemReference
豊中市三和町三丁目三番政府標準利用規約（第2.0版） (Government Standard Terms of Use v2.0)Ministry of the Environment Air Pollutant Wide Area Monitoring SystemReference
豊中市桜塚3丁目6番政府標準利用規約（第2.0版） (Government Standard Terms of Use v2.0)Ministry of the Environment Air Pollutant Wide Area Monitoring SystemReference
大阪市中央区大手前1-5-44政府標準利用規約（第2.0版） (Government Standard Terms of Use v2.0)Ministry of the Environment Air Pollutant Wide Area Monitoring SystemReference

The city's value is the median of its reference monitors each hour; low-cost sensors are listed but not counted when reference monitors exist. Data via OpenAQ; licences as listed. How we rank. Embed this on your site.

Other cities in Japan

Honmachi 9.6Onomichi 9.5Hita 9.4Ōzu 9.3Kanoya 9.3Kobayashi 9.1Kamisu 9.1Ōyanomachi-noboritate 9.0Minamata 9.0Hitoyoshi 8.9Owariasahi 8.9Hyūga 8.9

30-day averages, µg/m³. All of Japan →

Updated 2026-10-01 05:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.