Yokohama air quality · Kanagawa, Japan
Clear air is not just pleasant, it is preventive health
US AQI 22 (Good) in Yokohama, from 20 MOE Japan monitoring stations. Main pollutant: PM2.5.
Updated
Pollutants in Yokohama
- PM2.5 · µg/m³4.0Under WHO limit
- NO₂ · µg/m³16.9Under WHO limit
- O₃ · µg/m³47.0
- SO₂ · µg/m³3.9Under WHO limit
- CO · mg/m³0.23
Concentrations averaged across the city's stations. WHO multiples use the 2021 24-hour guidelines.
Is it safe outside in Yokohama right now?
Air quality is satisfactory and poses little or no risk.
Walking and commuting
Go aheadEnjoy it.
Running and jogging
Go aheadA great time to run outdoors.
Cycling
Go aheadRide freely.
Children playing outside
Go aheadNo limits.
Older adults and heart or lung conditions
Go aheadNo limits.
Open windows
Go aheadAir out your home.
Mask outdoors
Not neededNot needed.
Air purifier indoors
Not neededNot needed.
Based on the US EPA Air Quality Guide, applied to the current US AQI category. If you have symptoms, follow your doctor's advice.
What US AQI 0–50 means for your health →
Air quality by area in Yokohama
8 stations, worst first- 西区浅間町Good · roadside39
- 西区平沼Good28
- 中区本牧大里町Good28
- 金沢区富岡東Good28
- 旭区鶴ケ峰Good28
Show all 8 stations
- 神奈川区広台太田町Good17
- 保土ケ谷区桜ケ丘Good17
- 南区南太田Good11
Roadside and industrial monitors are shown but are not part of the city figure.
Yokohama air quality history
Daily average, 16 days- 34average daily US AQI over 16 days
- 63worst day, 2 November
- 17cleanest day, 26 October
- 0days at Unhealthy or worse
The last 7 days averaged 27, better than the week before (44). 13 of the last 16 days were Good.
Nearby cities
Japan rankingYokohama air quality: common questions
What is the AQI in Yokohama right now?
The US AQI in Yokohama is 22 (Good), based on 20 monitoring stations. The main pollutant is PM2.5.
Is it safe to go outside in Yokohama today?
A great time to be outside. Air quality is satisfactory and poses little or no risk. For runners: A great time to run outdoors.
Which area of Yokohama has the worst air right now?
西区浅間町 has the highest reading at 39 (Good). 南区南太田 has the lowest at 11, out of 8 stations reporting.
How has air quality in Yokohama been recently?
Over the last 16 days with data, Yokohama averaged US AQI 34. The worst day was 2 November at 63; the cleanest was 26 October at 17. 0 days were at Unhealthy or worse.
Where does Yokohama's air quality data come from?
From Ministry of the Environment, Japan · AEROS (soramame.env.go.jp) · preliminary data, using 20 monitoring stations in and around the city. Good Air does not estimate or adjust these readings.
Source: Ministry of the Environment, Japan · AEROS (soramame.env.go.jp) · preliminary data. Readings are published by the monitoring agency and may be revised.