Hiroshima air quality · Japan
Clean overnight air is linked to deeper, less interrupted sleep
US AQI 22 (Good) in Hiroshima, from 9 MOE Japan monitoring stations. Main pollutant: PM2.5.
Updated
Pollutants in Hiroshima
- PM2.5 · µg/m³4.0Under WHO limit
- NO₂ · µg/m³5.6Under WHO limit
- O₃ · µg/m³45.1
- 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 Hiroshima 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 Hiroshima
11 stations, worst first- 福木小学校Good33
- 古市小学校Good · roadside33
- 伴小学校Good22
- 三篠小学校Good22
- 皆実小学校Good22
Show all 11 stations
- 可部小学校Good22
- 比治山Good · roadside22
- 安佐南区役所Good17
- 庚午Good · roadside6
- 井口小学校Good6
- 紙屋町Good · roadside6
Roadside and industrial monitors are shown but are not part of the city figure.
Hiroshima air quality history
Daily average, 16 days- 42average daily US AQI over 16 days
- 70worst day, 1 November
- 13cleanest day, 25 October
- 0days at Unhealthy or worse
The last 7 days averaged 39, better than the week before (51). 13 of the last 16 days were Good.
Nearby cities
Japan rankingHiroshima air quality: common questions
What is the AQI in Hiroshima right now?
The US AQI in Hiroshima is 22 (Good), based on 9 monitoring stations. The main pollutant is PM2.5.
Is it safe to go outside in Hiroshima 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 Hiroshima has the worst air right now?
福木小学校 has the highest reading at 33 (Good). 紙屋町 has the lowest at 6, out of 11 stations reporting.
How has air quality in Hiroshima been recently?
Over the last 16 days with data, Hiroshima averaged US AQI 42. The worst day was 1 November at 70; the cleanest was 25 October at 13. 0 days were at Unhealthy or worse.
Where does Hiroshima's air quality data come from?
From Ministry of the Environment, Japan · AEROS (soramame.env.go.jp) · preliminary data, using 9 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.