Air Quality Index (AQI) in Japan 🇯🇵
Live Air Quality Index (AQI) and PM2.5 Levels in Japan
Currently, the Air Quality Index (AQI) in Tokyo, the capital of Japan, is measured at a score of 93. According to the US EPA health standard, this air quality rating is categorized as Moderate. The current atmosphere in Tokyo is influenced by a PM2.5 (fine particulate matter) concentration of 31.8 µg/m³ and PM10 levels recorded at 36.0 µg/m³. Monitoring of gaseous pollutants shows Nitrogen Dioxide (NO2) at 40.8 µg/m³.
Beyond the primary urban hubs, atmospheric conditions and smog levels fluctuate across Japan based on industrial output, traffic density, and local weather patterns. Real-time pollution data and respiratory health alerts are also being actively monitored in cities like Yokohama, Osaka, Nagoya, Sapporo and Fukuoka. Tracking these air quality metrics is essential for residents nationwide to manage outdoor exposure and maintain respiratory safety during periods of increased particulate concentration.
Japan Air Quality: Major Cities Index
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Pollution Monitor & AQI Forecast: Japan Regions
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* Air Quality Index (AQI) data for Japan is calculated using the US EPA standard. Information is processed from multiple monitoring stations detecting PM2.5, PM10, and gaseous pollutants to ensure accuracy for respiratory health planning.
Browse Air Quality in Japan by cities in alphabetical order:
Frequently Asked Questions about Air Quality in Japan
What is the air quality in Japan right now?
The current AQI in Tokyo (capital of Japan) is 93 — categorised as Moderate. Conditions vary across the country — see AQI for all cities for a complete picture.
Which city in Japan has the worst air quality right now?
Right now, Chiba has the highest AQI reading in Japan at 143 (Unhealthy (Sensitive)).
Which city in Japan has the best air quality right now?
Kagoshima currently has the lowest AQI in Japan at 23 (Good).
What is the PM2.5 level in Tokyo today?
Is the air in Japan safe to breathe today?
Most cities in Japan currently report acceptable air-quality levels, though local conditions vary.
What are the cleanest cities in Japan right now?
Top 5 cities in Japan with the best (lowest) AQI right now:
- Kagoshima: AQI 23 — Good
- Sapporo: AQI 32 — Good
- Niigata: AQI 40 — Good
- Kitakyushu: AQI 44 — Good
- Sendai: AQI 51 — Moderate
What are the most polluted cities in Japan right now?
Top 5 cities in Japan with the worst (highest) AQI right now:
- Chiba: AQI 143 — Unhealthy (Sensitive)
- Honchō: AQI 143 — Unhealthy (Sensitive)
- Matsudo: AQI 143 — Unhealthy (Sensitive)
- Yokohama: AQI 117 — Unhealthy (Sensitive)
- Kawasaki: AQI 117 — Unhealthy (Sensitive)
Air Quality Scales & Resources
Wondering what these AQI numbers mean for your health? Our worldwide air quality guide explains every level of the AQI, PM2.5, PM10, ozone, NO2, CO and SO2 scales, with practical health advice for each range.
→ Understanding Air Quality Levels: read the full guide