Prague, CzechiaMagnetic latitude 45.9°Population 37,665232 m above sea level
Can you see the northern lights in Staré Strašnice?
Only severe geomagnetic storms (Kp 8.3 or more) bring the aurora into view from Staré Strašnice — a few nights per solar cycle, low in the north. Since 1995 that level (Kp 8.3) was reached during darkness here on 19 nights.
Right now
Quiet right now (Kp 3.0).
Measured activity in the last half hour: Hp30 5.3.
Updates every minute while this page is open. Ground data: GFZ Potsdam Hp30 index (CC BY 4.0).
Tonight in one minute
Not tonight
- Solar activity Too weak: Kp 2.7 expected, 8.3 needed here.
- Sky Partly cloudy (69% cloud) — look for gaps.
- Darkness Dark from 19:19 to 06:16.
What to do: Not tonight — your next chance is shown just below.
- Detailed forecast Fri 16 2.7 No · Kp 2.7
- Sat 17 1.7 No · Kp 1.7
- Sun 18 1.7 No · Kp 1.7
- 27-day trend Mon 19 2 No · Kp 2
- Tue 20 3 No · Kp 3
- Wed 21 4 No · Kp 4
- Thu 22 4 No · Kp 4
- Fri 23 4 No · Kp 4
- Sat 24 3 No · Kp 3
- Sun 25 2 No · Kp 2
- Mon 26 2 No · Kp 2
- Tue 27 2 No · Kp 2
- Wed 28 2 No · Kp 2
- Thu 29 2 No · Kp 2
- Fri 30 5 No · Kp 5
- Sat 31 5 No · Kp 5
- Sun 1 5 No · Kp 5
- Mon 2 3 No · Kp 3
- Tue 3 2 No · Kp 2
- Wed 4 2 No · Kp 2
- Thu 5 3 No · Kp 3
- Fri 6 3 No · Kp 3
- Sat 7 3 No · Kp 3
Saturday 17 October — No · Kp 2.7 · Forecast cloud: 69%. · Reliability: good
Each box is one night: the colour shows the chance, the number the expected Kp. Tap a night for details.
📅 Add these nights to your calendar — it updates itself (.ics)
How far ahead can the northern lights be forecast?
- Minutes to an hour: satellites 1.5 million km away measure the solar wind before it reaches Earth. This is the surest warning — the “Right now” box uses it.
- 1–3 days: when the Sun throws out a cloud of particles, it takes one to three days to arrive. NOAA's 3-hourly forecast covers these nights; the timing can still be off by a few hours.
- 4–27 days: the Sun turns once every 27 days, and regions that disturbed Earth's field last time often do it again. NOAA's 27-day outlook gives this rough trend — new eruptions are not in it yet.
Tonight
Updated 21:48 local time
Unlikely
Best around 21:00. Forecast max Kp 2.7 (this place needs 8.3), average cloud 69%.
- Dark enough
- 19:19 – 06:16
- Sunset
- 18:08 · sunrise 07:26
- Moon
- 33% · ↑ 14:37 · ↓ 20:58
- Kp neededKp index: a 0–9 measure of geomagnetic activity. The higher it is, the further from the poles the aurora reaches.
- Kp 8.3
- Kp for photos
- In photos: from Kp 6.7 (a red glow low in the north).
- Look towards
- north (0°)
Cloud layers and weather
Low cloud blocks the aurora completely. Thin high cloud often still lets a bright aurora shine through, so a sky with only high cloud is worth a look.
| Time | Fri, 21 | Sat, 00 | Sat, 03 | Sat, 06 | Sat, 21 | Sun, 00 | Sun, 03 | Sun, 06 | Sun, 21 | Mon, 00 | Mon, 03 | Mon, 06 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temperature | 11 °C | 9 °C | 8 °C | 7 °C | 11 °C | 10 °C | 10 °C | 9 °C | 11 °C | 9 °C | 7 °C | 6 °C |
| Feels like | 11 °C | 8 °C | 7 °C | 6 °C | 11 °C | 9 °C | 8 °C | 8 °C | 11 °C | 7 °C | 6 °C | 5 °C |
| Wind | 2 m/s | 3 m/s | 3 m/s | 2 m/s | 4 m/s | 3 m/s | 3 m/s | 2 m/s | 4 m/s | 3 m/s | 2 m/s | 2 m/s |
Cloud layers and weather: MET Norway (CC BY 4.0).
Score = activity (NOAA Kp and OVATION) × clear sky (MET Norway) × darkness × moonlight. Methodology
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What you would see from Staré Strašnice
Facing north. Bands show where the aurora sits at two activity levels.
| Kp | What you see | Lower edge | Ray tops | Distance to the aurora |
|---|---|---|---|---|
| 2 | Below the horizon | -5° | -2° | 1,846 km |
| 3 | Below the horizon | -4° | 0° | 1,624 km |
| 4 | Below the horizon | -2° | 2° | 1,401 km |
| 5 | Below the horizon | 0° | 4° | 1,179 km |
| 6 | Below the horizon | 2° | 7° | 956 km |
| 7 | Faint glow, mostly on camera | 5° | 12° | 734 km |
| 8 | Faint glow, mostly on camera | 9° | 19° | 512 km |
| 9 | Visible to the north | 19° | 33° | 289 km |
The Kp scale in plain words
Kp is a 0–9 score for how strongly the Earth's magnetic field is being shaken by the solar wind. The higher it goes, the further from the poles the northern lights reach. Kp 0–2 is a quiet night; Kp 5 and above is a geomagnetic storm.
- Kp 0–2 Quiet Only under the auroral oval: northern Norway, Swedish and Finnish Lapland, Iceland, Alaska, northern Canada.
- Kp 3 Unsettled next 24 h Bright in the Arctic; low on the horizon in central Scandinavia and southern Iceland.
- Kp 4 Active Overhead in the Arctic; low in the north from southern Norway, Sweden, Finland and northern Scotland.
- Kp 5 Minor storm (G1) Scotland, southern Scandinavia, the Baltic states, the northern US states and southern Canada.
- Kp 6 Moderate storm (G2) Northern England, Denmark, northern Germany and Poland, the US Midwest — often clearer in photos than to the eye.
- Kp 7 Strong storm (G3) camera in Staré Strašnice Most of the UK, the Netherlands, Germany, Poland, Czechia; red glow in photos from France and the northern Alps.
- Kp 8 Severe storm (G4) eye in Staré Strašnice Central Europe to the eye; red sky in photos from northern Italy, Spain, the Balkans and Turkey's Black Sea coast.
- Kp 9 Extreme storm (G5) Seen across Europe and the US; in photos as far south as the Mediterranean, Turkey and North Africa (May 2024).
Light pollution
City sky. City lights hide all but the brightest displays. Plan to leave the urban area.
Estimate from NASA VIIRS night-light data (sky-glow model within 50 km). Check access and private land before you go.
Hills and mountains
Terrain is not modelled for this place.
From elevation data (AWS Terrain Tiles) along seven lines of sight up to 30 km.
Best months to see the aurora in Staré Strašnice
Share of nights 2005–2025 that were dark, active enough here and mostly clear.
Activity of Kp 8.3 or more is too rare here for monthly odds to be meaningful. The table still shows how often nights are clear and dark.
| Month | Good nights | Clear nights | Darkness | Low / high |
|---|---|---|---|---|
| September | 0% | 58% | 8.9 h | 10° / 21°C |
| October | 0% | 42% | 10.8 h | 5° / 15°C |
| November | 0% | 24% | 12.5 h | 1° / 8°C |
| December | 0% | 16% | 13.1 h | -3° / 3°C |
| January | 0% | 14% | 12.8 h | -4° / 2°C |
| February | 0% | 25% | 11.4 h | -4° / 4°C |
| March | 0% | 38% | 9.5 h | -1° / 9°C |
| April | 0% | 53% | 7.5 h | 3° / 15°C |
Aurora nights in Staré Strašnice since 1995
Nights when Kp reached 8.3 or more while it was dark here.
Most recent strong nights
- 19 January 2026 · Kp 8.7
- 11 November 2025 · Kp 8.7
- 10 October 2024 · Kp 8.7
- 10 May 2024 · Kp 9.0
- 23 April 2023 · Kp 8.3
- 14 December 2006 · Kp 8.3
- 9 November 2004 · Kp 8.7
- 7 November 2004 · Kp 8.7
Practical information
- Nearest airport
- Václav Havel Airport Prague (PRG) · 18 km
- Typical low / high in May
- 8° / 19°C
- What to wear
- Cool nights: layers, a windproof jacket, hat and gloves for standing still outside. Full clothing guide
- Emergency number
- 112
- Winter driving
- Winter tyres (min. 4 mm tread for cars; M+S still accepted) are required 1 Nov – 31 Mar when there is snow, ice or frost on the road or it can be expected, and always on sections marked with the 'Zimní výbava' sign (C 15a). Road info: national traffic information portal dopravniinfo.gov.cz. Road conditions
- Access to land
- § 63 of Act 114/1992 grants free passage through the landscape (mainly on state, municipal and legal-entity land, excluding gardens, yards, crops and pastures with livestock), and the Forest Act lets everyone enter forests at their own risk; national park core zones have extra restrictions.
- Weather service
- Czech Hydrometeorological Institute (ČHMÚ)
Questions and answers
What Kp do you need to see the aurora in Staré Strašnice?
Only severe geomagnetic storms (Kp 8.3 or more) bring the aurora into view from Staré Strašnice — a few nights per solar cycle, low in the north.
Which way should I look for the aurora in Staré Strašnice?
Face north (about 0° from true north). At Kp 8.3 the lower edge of the aurora sits roughly 19° above the horizon; stronger activity lifts it higher and further across the sky.
When is the aurora season in Staré Strašnice?
Staré Strašnice gets dark enough for the aurora all year round, though the long winter nights give the most hours to watch.
Is there much light pollution in Staré Strašnice?
City lights hide all but the brightest displays. Plan to leave the urban area.
When was the aurora last possible in Staré Strašnice?
The most recent night in our data when activity reached the level Staré Strašnice needs, during darkness, was 19 January 2026 (Kp 8.7). It has happened on 19 nights since 1995.
Also covered by this forecast
Villages and districts around Staré Strašnice share its forecast: within a few kilometres the sky, the Kp needed and the best direction are the same.
- Nové Strašnice 1 km
- Praha 10 1 km
- Štěrboholy 3 km
- Praha-Štěrboholy 3 km
- Dolní Měcholupy 4 km
- Praha-Dubeč 6 km