Arkansas, United StatesMagnetic latitude 45.6°Population 16,081345 m above sea level
Can you see the northern lights in Siloam Springs?
Only severe geomagnetic storms (Kp 8.3 or more) bring the aurora into view from Siloam Springs — a few nights per solar cycle, low in the north. Since 1995 that level (Kp 8.3) was reached during darkness here on 17 nights.
Right now
It is still light here. Darkness starts at 19:30.
Updates every minute while this page is open.
Tonight in one minute
Not tonight
- Solar activity Too weak: Kp 4 expected, 8.3 needed here.
- Sky Mostly clear (1% cloud).
- Darkness Dark from 19:30 to 06:35. A bright moon (79%) washes out faint displays.
What to do: Not tonight — your next chance is shown just below.
Wednesday 21 October — No · Kp 4 · Forecast cloud: 1%. · 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 14:31 local time
Unlikely
Best around 19:00. Forecast max Kp 4.0 (this place needs 8.3), average cloud 1%.
- Dark enough
- 19:30 – 06:35
- Sunset
- 18:34 · sunrise 07:31
- Moon
- 79% · ↑ 16:09 · ↓ 03:42
- 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 (4°)
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 | Wed, 19 | Wed, 22 | Thu, 01 | Thu, 04 | Thu, 19 | Thu, 22 | Fri, 01 | Fri, 04 | Fri, 19 | Fri, 22 | Sat, 01 | Sat, 04 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Low cloud | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% |
| Mid cloud | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% |
| High cloud | 0% | 0% | 0% | 0% | 0% | 9% | 18% | 22% | 17% | 28% | 39% | 35% |
| Temperature | 17 °C | 15 °C | 13 °C | 11 °C | 18 °C | 16 °C | 14 °C | 12 °C | 18 °C | 16 °C | 15 °C | 13 °C |
| Feels like | 17 °C | 15 °C | 13 °C | 11 °C | 18 °C | 16 °C | 14 °C | 12 °C | 18 °C | 16 °C | 15 °C | 13 °C |
| Wind | 1 m/s | 1 m/s | 2 m/s | 1 m/s | 1 m/s | 1 m/s | 2 m/s | 2 m/s | 3 m/s | 3 m/s | 3 m/s | 3 m/s |
Cloud layers and weather: Open-Meteo (CC BY 4.0).
Score = activity (NOAA Kp and OVATION) × clear sky (MET Norway) × darkness × moonlight. Methodology
Weather in Siloam Springs
The aurora only shows through clear skies, so the weather matters as much as the Kp index. Here is the general forecast for Siloam Springs: temperature, wind and the chance of rain for the coming days.
Planning further ahead? See the hour-by-hour weather forecast for Siloam Springs on Atlas of Seasons.
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What you would see from Siloam Springs
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° | -3° | 1,879 km |
| 3 | Below the horizon | -4° | -1° | 1,657 km |
| 4 | Below the horizon | -2° | 1° | 1,434 km |
| 5 | Below the horizon | -1° | 4° | 1,212 km |
| 6 | Below the horizon | 2° | 7° | 990 km |
| 7 | Faint glow, mostly on camera | 4° | 11° | 767 km |
| 8 | Faint glow, mostly on camera | 8° | 17° | 545 km |
| 9 | Visible to the north | 16° | 30° | 322 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 Bright in the Arctic; low on the horizon in central Scandinavia and southern Iceland.
- Kp 4 Active next 24 h 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 Siloam Springs 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 Siloam Springs 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
Bright suburban sky. Strong sky glow washes out faint aurora. Head out of town for anything but a bright display.
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 Siloam Springs
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% | 77% | 9.6 h | 17° / 30°C |
| October | 0% | 78% | 10.9 h | 10° / 23°C |
| November | 0.2% | 74% | 11.6 h | 4° / 16°C |
| December | 0% | 59% | 12.1 h | -1° / 10°C |
| January | 0% | 63% | 11.9 h | -3° / 8°C |
| February | 0% | 61% | 11.0 h | -1° / 10°C |
| March | 0% | 63% | 10.3 h | 5° / 17°C |
| April | 0% | 64% | 8.9 h | 9° / 21°C |
Aurora nights in Siloam Springs since 1995
Nights when Kp reached 8.3 or more while it was dark here.
Most recent strong nights
- 11 November 2025 · Kp 8.7
- 10 October 2024 · Kp 8.3
- 10 May 2024 · Kp 9.0
- 14 December 2006 · Kp 8.3
- 23 August 2005 · Kp 8.7
- 14 May 2005 · Kp 8.3
- 9 November 2004 · Kp 8.7
- 7 November 2004 · Kp 8.7
Practical information
- Nearest airport
- Northwest Arkansas National Airport (XNA) · 23 km
- Typical low / high in August
- 22° / 34°C
- What to wear
- Cool nights: layers, a windproof jacket, hat and gloves for standing still outside. Full clothing guide
- Emergency number
- 911
- Winter driving
- Tyre and chain rules are set at state level; check Alaska 511 (511.alaska.gov, Alaska DOT&PF) for Alaska roads, or the relevant state's 511 service elsewhere. Road conditions
- Access to land
- There is no general right to roam; trespass law is set by each state, so stay on public land (national parks, national forests, BLM land) or get the landowner's permission, and follow each park's night-time and parking rules.
- Official space-weather service
- NOAA Space Weather Prediction Center (aurora dashboard)
- Weather service
- National Weather Service (NOAA)
Questions and answers
What Kp do you need to see the aurora in Siloam Springs?
Only severe geomagnetic storms (Kp 8.3 or more) bring the aurora into view from Siloam Springs — a few nights per solar cycle, low in the north.
Which way should I look for the aurora in Siloam Springs?
Face north (about 4° from true north). At Kp 8.3 the lower edge of the aurora sits roughly 16° above the horizon; stronger activity lifts it higher and further across the sky.
When is the aurora season in Siloam Springs?
Siloam Springs 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 Siloam Springs?
Strong sky glow washes out faint aurora. Head out of town for anything but a bright display.
When was the aurora last possible in Siloam Springs?
The most recent night in our data when activity reached the level Siloam Springs needs, during darkness, was 11 November 2025 (Kp 8.7). It has happened on 17 nights since 1995.
Also covered by this forecast
Villages and districts around Siloam Springs share its forecast: within a few kilometres the sky, the Kp needed and the best direction are the same.
- Hico 0 km
- Twin Springs 1 km
- West Siloam Springs 3 km
- Dawn Hill 6 km
- Township 12 6 km
- Lake Frances 7 km
- Martin 8 km
- West Point 8 km
- Watts 9 km
- Bloomfield 10 km
- Fairmount 10 km
- Gallatin 10 km
- Gentry 10 km
- Norwood 10 km
- Trident 11 km
- Ballard 11 km
- Pedro 12 km
- Township 13 12 km
- Dripping Springs 12 km
- Tonnece 12 km
- Cherokee City 13 km
- Springtown 13 km
- Logan 14 km
- Beckwith 15 km
- Flint 15 km
- Watts Community 15 km
- Falling Springs 16 km
- Township of Illinois 16 km
- Ionia 16 km
- Colcord 16 km
- Cincinnati 17 km
- Row 17 km
- Chance 18 km
- Flint Creek 18 km