Nagasaki air quality · Japan
Clear air is not just pleasant, it is preventive health
US AQI 14 (Good) in Nagasaki, from 4 MOE Japan monitoring stations. Main pollutant: PM2.5.
Updated
Pollutants in Nagasaki
- PM2.5 · µg/m³2.5Under WHO limit
- NO₂ · µg/m³2.8Under WHO limit
- O₃ · µg/m³80.4
- SO₂ · µg/m³2.6Under WHO limit
Concentrations averaged across the city's stations. WHO multiples use the 2021 24-hour guidelines.
Is it safe outside in Nagasaki 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 Nagasaki
4 stations, worst first- 時津小学校大気測定局Good28
- 小ケ倉支所Good17
- 稲佐小学校Good11
- 東長崎支所Good11
Nagasaki air quality history
Daily average, 16 days- 38average daily US AQI over 16 days
- 63worst day, 31 October
- 16cleanest day, 26 October
- 0days at Unhealthy or worse
The last 7 days averaged 38, about the same as the week before (42). 13 of the last 16 days were Good.
Nearby cities
Japan rankingNagasaki air quality: common questions
What is the AQI in Nagasaki right now?
The US AQI in Nagasaki is 14 (Good), based on 4 monitoring stations. The main pollutant is PM2.5.
Is it safe to go outside in Nagasaki 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 Nagasaki has the worst air right now?
時津小学校大気測定局 has the highest reading at 28 (Good). 東長崎支所 has the lowest at 11, out of 4 stations reporting.
How has air quality in Nagasaki been recently?
Over the last 16 days with data, Nagasaki averaged US AQI 38. The worst day was 31 October at 63; the cleanest was 26 October at 16. 0 days were at Unhealthy or worse.
Where does Nagasaki's air quality data come from?
From Ministry of the Environment, Japan · AEROS (soramame.env.go.jp) · preliminary data, using 4 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.