LIVE AURORA FORECAST
OCTOBER 21st GOOD CHANCES – TOURS ARE CONFIRMED
Aurora activity is expected to be moderate tonight — in Iceland, this still means favourable conditions for visible displays, if the skies stay clear.
Reykjavík and surrounding areas are forecast to have clear skies during prime aurora hours!
Best window to watch: 22:30 to 00:30 (local time). When the sky is darkest, with a bit of luck, the northern lights may come alive.
TONIGHT’S OUTLOOK
CHASING THE NORTHERN LIGHTS - A STEP BY STEP GUIDE FOR YOUR AURORA HUNT
提前计划
Two factors matter most when you plan your trip
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The 27-day KP forecast: The 27-day KP forecast is based on the Sun’s rotation. Since the Sun turns once every 27 days, active regions can reappear and give a rough idea of aurora chances weeks ahead.
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The moon phases: A bright full moon can wash out faint auroras, but it can also create magical photo opportunities by lighting up Iceland’s landscapes.
足够黑暗的环境
清澈的天空
极光狩猎小贴士：如果您能看到星星，或许也能看到极光！
查看云层状况，寻找清澈的天空。使用时间滑块看看不同时间的云层变化，地图上的白色或浅色区域就是最佳观赏地点。
地图颜色说明：
🟢 绿色 – 所有云层（综合）
🔵 蓝色 – 低层云
🔴 红色 – 中层云
🟠 橙色 – 高层云（仍可能透过它们看到极光）
右滑开始
选择安全的地点
监测太阳活动
Image updated in real-time, courtesy of NOAA's Space Weather Prediction Center.
MONITOR LIVESTREAM FROM REYKJAVÍK AND ÞINGVELLIR
Live Stream from Reykjavík: Your Window to the Northern Lights and Midnight Sun
Live Stream from Þingvellir COMING SOON!!!
Experience the magic of Iceland in real-time with our live stream from Reykjavík, available year-round on aurorareykjavik.is. Whether you’re dreaming of witnessing the Northern Lights or eager to catch a glimpse of the Midnight Sun, this live feed offers you an immersive look at the stunning natural phenomena Iceland is famous for.
COMING SOON
Live Stream from Þingvellir – One of the World’s Best Locations for Aurora Hunting
实时极光预报
CURRENT SOLAR ACTIVITY
Image updated in real-time, courtesy of NOAA's Space Weather Prediction Center.
当前极光指数
三天极光指数
CURRENT BZ VALUE
UNDERSTANDING THE AURORA FORECAST
Auroral Activity (Kp Index)
The Kp index measures global geomagnetic activity on a scale from 0 to 9. The higher the number, the stronger the potential aurora.
Good for aurora hunting: Kp2 or higher usually means visible lights in most of Iceland.
Bz (North–South Magnetic Field)
The Bz component tells us the direction of the interplanetary magnetic field. When Bz is negative (–2 nT or lower), it opens a “door” in Earth’s magnetic field, allowing solar particles to enter and create auroras.
Ideal: –3 nT or below.
Bt (Total Magnetic Field Strength)
Bt shows the strength of the magnetic field carried by the solar wind. Stronger Bt (above 6 nT) increases auroral intensity when Bz is southward.
Ideal: Bt ≥ 6 nT combined with Bz ≤ –2 nT.
Solar Wind Speed
The solar wind is a stream of charged particles flowing from the Sun. Faster winds deliver more energy into Earth’s atmosphere.
Good chances: speeds above 400 km/s often produce bright, fast-moving auroras.
Combine all these indicators with clear skies and darkness for the best viewing conditions.
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为什么极光预报会有变化？
还有其他极光数据来源我应该关注的吗？
极光指数有多准确？
在冰岛观赏极光的最佳月份是什么时候？
极光指数的高低在观赏极光方面有什么区别？
夏天能看到极光吗？
有哪些推荐的极光预报应用程式APP？
- My Aurora Forecast – 实时极光地图、27天预报和可自定义的提醒功能。非常适合初学者和经验丰富的极光追逐者。
- Aurora Alerts – Northern Lights – 实时提醒、云层覆盖图和极光指数读数。非常适合需要即时通知的你。
- Hello Aurora – 社区分享的目击信息、预报和实时条件。非常适合社交互动体验。
- Northern Eye Aurora Forecast – 详细的太阳风数据、极光指数和实时太阳活动更新。最适合科学爱好者。
- Aurora Forecast & Alerts – 按小时预报、云层地图和可自定义的通知。简单易用，便于快速获取更新。
