Hauts-de-France

Northern lights in Lille tonight

Real-time aurora forecast for Lille (Hauts-de-France) - latitude 50.63° N, estimated Kp threshold 7.

Kp index

4.3

unsettled

Hemispheric power

North21GW

South22GW

Source: app.pulsar-si.com

Tonight in Lille

Very unlikely

Based on Kp 4.3 and Lille's latitude.

Seeing the northern lights from Lille

Lille, at 50.6° N, is the northernmost major French city (with Dunkirk). It is also where auroras are statistically most frequent: a Kp ≥ 6 is often enough. The plains of Flanders and Artois provide a clear northern horizon for tens of kilometres. The proximity of Belgium and the Netherlands adds horizon light pollution, but the 30-40 km band to the north or east of the metropolis remains workable.

Observation conditions in Lille

Lille is rated Bortle 8. The countryside around Arras and Saint-Omer drops to Bortle 5. The closest good sites are the Mormal forest (Bortle 4, 50 km south-east) and the Nord-Pas-de-Calais coal heaps, some of which reach Bortle 5 thanks to their isolation. The nordic climate unfortunately gives few fully clear nights: favour easterly-wind periods and winter anticyclones.

Recent auroras from Lille

10-11 May 2024 (Kp 9): green and pink aurora photographed from the Citadel of Lille, the Loos-en-Gohelle heaps and the Opal Coast. 5 November 2023 (Kp 7): aurora visible from inland Flanders fields. 8 September 2017 (Kp 7.7): many sightings in the North.

What Lille asks of the sky

Geomagnetic latitude

52°

3 of 40

Kp index required

Kp 7

9 / 12 months

Dark nights per year

316

-49

Lille ranks 3 of the 40 cities we track, at 52° geomagnetic. Dunkerque sits 0.5° higher , Le Havre follows at 51.4°.

The threshold to clear here is Kp 7. Twelve months of archive hold 9 nights, the most recent on 4 July 2026, and 157 since 1994. Amiens and Calais and Reims share exactly the same threshold.

A constraint specific to this latitude: astronomical night disappears from 29 mai to 16 juillet. Those 49 nights are lost in advance, whatever the Sun does. That leaves 316 usable nights.

How to read the Kp index →

Local conditions

Light pollution

Bortle 8 of 9

SQM 18.32 mag/arcsec²

Nearest darker sky

Euralille

2 km · Bortle 6

Kp forecast, next 3 days

Source: app.pulsar-si.com. For an aurora to be visible from Lille, Kp must exceed 7.

Wed 19 Aug

1.1

Expected max Kp

Thu 20 Aug

1.5

Expected max Kp

Fri 21 Aug

1.7

Expected max Kp

Frequently asked questions

Can you see the northern lights from Lille?

Yes, but rarely. Typically a Kp index of ≥ 7 is needed for the aurora to become visible from Lille (latitude 50.6° N). Major geomagnetic storms (Kp 8-9) that reach this latitude happen only a handful of times per 11-year solar cycle.

What Kp index is needed to see auroras from Lille?

The approximate Kp threshold for Lille is 7. Below that, auroras stay confined to high latitudes (Norway, Scotland). Above it, they gradually extend southward. A Kp of 8 gives a fair chance, 9 a strong one.

When is the best time to watch from Lille?

Auroras are a nighttime phenomenon, best observed between roughly 10 PM and 2 AM local time, when the geomagnetic pole is tilted towards the Earth's night side. In practice, peaks depend on when a coronal mass ejection arrives - activity can spike at any hour.

Where around Lille offers better conditions?

Move at least 40-60 km north of Lille to escape urban light pollution and gain 1-2 magnitudes of limiting magnitude.

Nearby cities

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