Hiroshima Air Quality Index
Hiroshima, Japan · Real-time AQI data
Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
Pollutant Breakdown
PM2.5
89µg/m³
PM10
30µg/m³
O₃
19.9ppm
NO₂
17ppb
SO₂
3.6ppb
CO
7.3ppm
Station: Shanghai (上海) · Mar 18, 01:00 PM · Updates every 30 min
Health Recommendations
Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
How does Hiroshima compare to other cities?
Compare →AQI Scale Reference
Other Cities in Japan
About Air Quality in Hiroshima
The Air Quality Index (AQI) in Hiroshima is measured using monitoring stations that track six key pollutants: PM2.5, PM10, ground-level ozone, nitrogen dioxide, sulfur dioxide, and carbon monoxide. The AQI is calculated using US EPA standards and ranges from 0 (excellent) to 500 (hazardous).
PM2.5 is typically the dominant pollutant in Hiroshima during high-pollution periods. Fine particulate matter from traffic, industry, and seasonal factors can push AQI above 150, which is considered unhealthy for all groups.
Check the health effects guide to understand what today's AQI means for your activity level, or see the global AQI rankings to compare Hiroshima with other cities worldwide.