Tap a station name for details. Use ↗ to open JMA information.
💡 About estimated WBGT and apparent temperature
Est. WBGT: This page shows a simplified heat-risk estimate calculated only from temperature and humidity. Solar radiation, radiant heat and wind are not included, so it may differ from official WBGT. Values of 28+ indicate severe caution and 31+ indicate danger.
Apparent temperature: A reference value calculated from temperature, relative humidity and wind speed with a Steadman outdoor-shade formula. It does not fully account for sun, clothing, activity or individual differences and does not guarantee how conditions will feel.
| Rank | Prefecture | StationStation | Observed | Daily high* | Daily low* |
|---|---|---|---|---|---|
| 1 | Fukushima | 15.3℃ | 15.4℃ | 15.3℃ | |
| 2 | Fukushima | 14.9℃ | 15.3℃ | 14.9℃ | |
| 3 | Miyagi | 14.0℃ | 14.0℃ | 14.0℃ | |
| 4 | Fukushima | 13.6℃ | 13.6℃ | 13.6℃ | |
| 5 | Fukushima | 13.5℃ | 13.9℃ | 13.5℃ | |
| 6 | Miyagi | 13.4℃ | 13.6℃ | 13.4℃ | |
| 7 | Fukushima | 13.4℃ | 13.4℃ | 13.2℃ | |
| 8 | Fukushima | 13.4℃ | 13.4℃ | 13.2℃ | |
| 9 | Fukushima | 13.2℃ | 13.9℃ | 13.2℃ | |
| 10 | Miyagi | 13.1℃ | 13.1℃ | 13.0℃ |
How to read and use KION
KION organizes Japan Meteorological Agency AMeDAS observations so you can quickly compare where it is hotter or colder across Japan. Along with current temperature, you can view provisional daily highs and lows, estimated WBGT and apparent temperature for the same station.
Choosing a ranking
Current uses the latest observed temperature, while High and Low show provisional daily extremes. WBGT and Apparent can be switched between highest-first and lowest-first. Filtering by prefecture, region or station name makes it easier to compare conditions around a destination.
Estimated WBGT and apparent temperature
Estimated WBGT is a simplified reference value calculated from the latest observed temperature and humidity. It is not official WBGT and does not include factors such as solar radiation or radiant heat. Apparent temperature uses the latest temperature, humidity and wind speed under an outdoor shaded-condition assumption. Neither value is a weather forecast.
Using nearby Cool Share spots
When you choose to use your location, KION can find the nearest observation station and nearby spots for the current season. By default, cooling shelters and cool spots are shown from April through September, and warm spots from October through March. Official facility-specific operating periods take priority when available. Coordinates and movement history are not stored. Facility information is based on public information from local authorities. Approximate facility locations are clearly marked as approximate. Information may change, so prioritize current on-site guidance and official information from the facility or municipality for opening hours, closures and conditions of use.
Updates and important notes
Current temperature is generally updated about every 10 minutes. Daily highs and lows are provisional values combining accumulated 10-minute observations with values published by the JMA, and missing data or delays can occur. For heat illness, severe weather or other safety decisions, prioritize the latest information from the JMA and other public authorities.