South Dakota, United StatesMagnetic latitude 52.6°Population 171,544448 m above sea level
Northern lights in Sioux Falls
Sioux Falls needs an active night: from about Kp 5 the aurora appears low over the north horizon, and it rises higher as activity grows. Since 1995 that level (Kp 5) was reached during darkness here on 622 nights.
Right now
It is still light here. Darkness starts at 19:36.
Updates every minute while this page is open.
Tonight in one minute
Only in photos, if at all
- Solar activity Enough for a camera: Kp 3.7 expected, 3.3 needed for photos, 5 for the eye.
- Sky Mostly clear (17% cloud).
- Darkness Dark from 19:36 to 06:47. A bright moon (77%) washes out faint displays.
What to do: Point a phone in night mode north (3–10 s exposure). A red or green glow often shows on the screen before you can see it.
Saturday 31 October — Good chance · Kp 5 · best around 00:30 · No cloud forecast this far ahead; in October about 67% of nights are clear here. · Reliability: low (rough trend)
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 09:09 local time
Unlikely
Best around 22:00. Forecast max Kp 3.7 (this place needs 5), average cloud 17%.
- Dark enough
- 19:36 – 06:47
- Sunset
- 18:33 · sunrise 07:49
- Moon
- 77% · ↑ 16:27 · ↓ 03:45
- Kp neededKp index: a 0–9 measure of geomagnetic activity. The higher it is, the further from the poles the aurora reaches.
- Kp 5
- Kp for photos
- In photos: from Kp 3.3 (a red glow low in the north).
- Look towards
- north (6°)
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% | 19% | 24% | 29% | 38% | 35% | 63% | 81% | 61% |
| High cloud | 0% | 0% | 0% | 0% | 6% | 8% | 8% | 5% | 100% | 70% | 28% | 16% |
| Temperature | 17 °C | 15 °C | 14 °C | 12 °C | 19 °C | 18 °C | 16 °C | 15 °C | 23 °C | 22 °C | 21 °C | 19 °C |
| Feels like | 17 °C | 15 °C | 14 °C | 12 °C | 19 °C | 18 °C | 16 °C | 15 °C | 23 °C | 22 °C | 21 °C | 19 °C |
| Wind | 2 m/s | 3 m/s | 3 m/s | 2 m/s | 4 m/s | 4 m/s | 5 m/s | 5 m/s | 9 m/s | 9 m/s | 9 m/s | 8 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 Sioux Falls
The aurora only shows through clear skies, so the weather matters as much as the Kp index. Here is the general forecast for Sioux Falls: temperature, wind and the chance of rain for the coming days.
Planning further ahead? See the hour-by-hour weather forecast for Sioux Falls on Atlas of Seasons.
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What you would see from Sioux Falls
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 | 0° | 5° | 1,101 km |
| 3 | Below the horizon | 3° | 9° | 878 km |
| 4 | Faint glow, mostly on camera | 6° | 14° | 656 km |
| 5 | Visible to the north | 12° | 22° | 434 km |
| 6 | Visible to the north | 25° | 42° | 211 km |
| 7 | Overhead and all around | – | – | – |
| 8 | Overhead and all around | – | – | – |
| 9 | Overhead, and also to the south | – | – | – |
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 camera in Sioux Falls 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) eye in Sioux Falls 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) Most of the UK, the Netherlands, Germany, Poland, Czechia; red glow in photos from France and the northern Alps.
- Kp 8 Severe storm (G4) 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.
A noticeably darker area starts about 10 km to the north-west. Open in OpenStreetMap
Estimate from NASA VIIRS night-light data (sky-glow model within 50 km). Check access and private land before you go.
Hills and mountains
The horizon towards the north is open (terrain below 0.3°), so low aurora is not blocked.
From elevation data (AWS Terrain Tiles) along seven lines of sight up to 30 km.
Best months to see the aurora in Sioux Falls
Share of nights 2005–2025 that were dark, active enough here and mostly clear.
September has been the best month (5% of nights), followed by October (4%).
| Month | Good nights | Clear nights | Darkness | Low / high |
|---|---|---|---|---|
| September | 5% | 78% | 9.3 h | 12° / 24°C |
| October | 4% | 67% | 10.9 h | 4° / 15°C |
| November | 3% | 58% | 12.0 h | -3° / 6°C |
| December | 1% | 48% | 12.6 h | -10° / -2°C |
| January | 1% | 58% | 12.4 h | -14° / -4°C |
| February | 3% | 57% | 11.4 h | -12° / -2°C |
| March | 3% | 52% | 9.9 h | -4° / 7°C |
| April | 2% | 55% | 8.3 h | 1° / 14°C |
Aurora nights in Sioux Falls since 1995
Nights when Kp reached 5 or more while it was dark here.
Most recent strong nights
- 4 October 2026 · Kp 5.0
- 3 October 2026 · Kp 5.0
- 7 September 2026 · Kp 5.0
- 3 July 2026 · Kp 7.0
- 24 June 2026 · Kp 5.0
- 18 April 2026 · Kp 5.3
- 17 April 2026 · Kp 5.3
- 2 April 2026 · Kp 5.3
Practical information
- Nearest airport
- Sioux Falls Regional Airport (FSD) · 5 km
- Typical low / high in September
- 12° / 24°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 Sioux Falls?
Sioux Falls needs an active night: from about Kp 5 the aurora appears low over the north horizon, and it rises higher as activity grows.
Which way should I look for the aurora in Sioux Falls?
Face north (about 6° from true north). At Kp 5 the lower edge of the aurora sits roughly 12° above the horizon; stronger activity lifts it higher and further across the sky.
What is the best month to see the aurora in Sioux Falls?
Over 2005–2025, September gave the best odds in Sioux Falls (5% of nights dark, active enough and mostly clear), followed by October (4%).
When is the aurora season in Sioux Falls?
Sioux Falls 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 Sioux Falls?
City lights hide all but the brightest displays. Plan to leave the urban area. A noticeably darker area starts about 10 km to the north-west.
When was the aurora last possible in Sioux Falls?
The most recent night in our data when activity reached the level Sioux Falls needs, during darkness, was 4 October 2026 (Kp 5.0). It has happened on 622 nights since 1995.
Also covered by this forecast
Villages and districts around Sioux Falls share its forecast: within a few kilometres the sky, the Kp needed and the best direction are the same.
- City of Sioux Falls 1 km
- Norton Acres 4 km
- Cactus Heights 5 km
- Froelich Addition 5 km
- Hayward Addition 5 km
- Martindale Addition 6 km
- Reppert Addition 6 km
- Erickson Subdivision 7 km
- Ingberg Tracts 7 km
- Iversons Subdivision 7 km
- Silver Valley Addition 7 km
- Split Rock Heights 7 km
- Webster Grove Addition 7 km
- Hill Ridge Development 8 km
- Klein Subdivision 8 km
- Pine Lakes Addition 8 km
- Skyline Heights 8 km
- Swanson’s Tracts 8 km
- Anderson Subdivision 9 km
- Boekhoff Subdivision 9 km
- Ellis 9 km
- Meadow View Addition 9 km
- Andys Acres 10 km
- East Sioux Falls 10 km
- Ellis Corner 10 km
- Shindler 10 km
- Township of Wayne 10 km
- Township of Mapleton 11 km
- Renner Corner 11 km
- West Acres Development 11 km
- McCroskey Addition 12 km
- Sorum Heights 12 km
- Sorum Addition 12 km
- Granite 16 km
- Country Estates Subdivision 17 km
- Township of Sioux 19 km
- Larchwood 26 km
- City of Hills 30 km
- Township of Brothersfield 31 km