Live aurora forecast

Northern lights in Saint John tonight

New Brunswick, Canada · 52° magnetic latitude · Kp 5-6 threshold

Aurora visibility · Saint John
6/9
Possible tonight

Kp 6 is at the threshold for Saint John. Aurora may be visible from a dark site if cloud cover permits.

QuietStormExtreme
Threshold
Kp 5-6
Magnetic latitude
~52°N
Bz ↓ south
- nT
Solar wind
- km/s
Density
- p/cm³
Cloud
-
Conditions right now: - Kp + Bz + solar wind + cloud + moon

Updated: 5 Jul, 09:16 UTC

7-day outlook for Saint John

Today
5 Jul
6
Possible
Tomorrow
6 Jul
3
Quiet
Tue
7 Jul
3
Quiet
Wed
8 Jul
3
Quiet
Thu
9 Jul
3
Quiet
Fri
10 Jul
3
Quiet
Sat
11 Jul
3
Quiet

Based on CME arrival predictions from NASA DONKI. Arrival times ±6 hours.

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What Kp is needed here?

Saint John sits at a magnetic latitude of approximately 52°N. The Kp index - a global measure of geomagnetic activity on a scale from 0 (quiet) to 9 (extreme storm), updated every 3 hours - needs to reach Kp 5-6 before the auroral oval expands far enough south to be visible from here.

At Kp 5-6, visibility is possible from Saint John but skies need to be clear and dark. Cloud cover and light pollution remain the main obstacles even when Kp is high enough.

Plan your viewing

Best dark sky sites near Saint John

Light pollution is the biggest obstacle after cloud cover. These sites give you the best dark northern horizon within reach.

Fundy Trail Parkway

Get directions ↗
Bortle Class 2 - Excellent dark sky 55 km east of Saint John - approximately 45 minute drive

The Fundy Trail Parkway runs along the Bay of Fundy coast east of Saint John and provides some of the darkest accessible sky in New Brunswick. The coastal cliff edge gives a clear northern horizon with the bay to the south. The parkway closes its main gate in winter but the entrance area remains accessible. Bortle 2 conditions on the outer headlands with no settlement lighting to the north across open water. A Kp 5-6 storm produces a glow low on the northern horizon from the cliff tops, often clearer on a long-exposure camera than to the eye.

Fundy National Park - Point Wolfe

Get directions ↗
Bortle Class 2 - Excellent dark sky 90 km east of Saint John - approximately 1.5 hour drive

Fundy National Park on the upper bay coast has earned recognition as a dark sky preserve. Point Wolfe area at the park's south end gives a clear coastal horizon. The park campground provides an accessible base, and the park's interior is largely free of artificial lighting. On a Kp 5-6 storm night, an aurora glow is visible low on the northern horizon from park clearings above the tree line. The tidal bays and coastal cliffs of Fundy make this the best-positioned dark sky site near Saint John.

Kouchibouguac National Park

Get directions ↗
Bortle Class 2 - Excellent dark sky 175 km northeast of Saint John - approximately 2 hour drive

A coastal national park on the Northumberland Strait with flat terrain, lagoon beaches, and almost no light pollution to the north across the strait. The park is a designated dark sky preserve. The barrier beach at Kelly's Beach gives an unobstructed 180-degree northern horizon across open water. On a Kp 5-6 storm night, this is one of the best aurora observation positions in Atlantic Canada. The distance from Saint John makes it a target for significant storm forecasts rather than marginal nights.

When to go

Best time to see the northern lights in Saint John

At 52°N magnetic latitude, Saint John sits at the lower end of regular aurora territory. Only the deep mid-winter months of November through January offer nights dark enough for aurora to be visible, and only then when a significant geomagnetic storm pushes the auroral oval this far south.

Activity peaks around the September and March equinoxes, when Earth's magnetic field geometry is most favourable for coupling with the solar wind. Events during these two windows tend to produce the strongest displays of the year for observers at Saint John's latitude.

Outside November through January, twilight is too bright for aurora viewing even during significant storms. The season is short, but the equinox months on either side of winter can extend it slightly when storm timing aligns.

Up to 8 locations

Saint John

Canada

Possible
Kp 6 need Kp 5-6
Checking darkness…
Nova Scotia

Canada

Low chance
Kp 6 need Kp 6
Checking darkness…
Quebec City

Canada

Possible
Kp 6 need Kp 5
Checking darkness…
The odds

How often does the aurora appear in Saint John?

Average nights per month the Kp reached Saint John's threshold of 5+, from 15 years of geomagnetic data (2010–2024).

1.2Jan
1.3Feb
1.6Mar
1.4Apr
1.2May
1Jun
1.2Jul
1.4Aug
1.5Sep
1.5Oct
1.2Nov
1.1Dec

Counts the Kp 5+ threshold only - cloud cover and local darkness are not included.
Kp data: GFZ German Research Centre for Geosciences, CC BY 4.0

Make it happen

Plan your trip to Saint John

Based on 15 years of geomagnetic data (2010–2024)

1st
March
1.6
avg aurora nights
Requires an extended stay
2nd
September
1.5
avg aurora nights
Requires an extended stay
3rd
October
1.5
avg aurora nights
Requires an extended stay

Best window

The August to October window averages 4 aurora nights - the strongest consecutive stretch of the year.

How long to stay

Aurora at this latitude requires patience - allow as many nights as possible during March.

From the community

Aurora photographs from Saint John

Real photos sourced from Wikimedia Commons.

Aurora over Saint JohnAurora over Saint John
Aurora over Saint JohnAurora over Saint John
Aurora over Saint JohnAurora over Saint John
Aurora over Saint JohnAurora over Saint John
Aurora over Saint JohnAurora over Saint John
Aurora over Saint JohnAurora over Saint John
Questions

Common questions about aurora in Saint John

Can you see the northern lights from Saint John, New Brunswick?
Sometimes, during a major geomagnetic storm. Geomagnetic latitude is the latitude measured from Earth's magnetic poles rather than the geographic ones, and it governs how far south the aurora reaches. Saint John sits at about 52° geomagnetic latitude, so the practical threshold is Kp 5-6 - a strong storm - seen as a glow low on the northern horizon from a dark site. The city light dome suppresses faint displays, but Fundy Trail Parkway 55 km east and Fundy National Park 90 km east both offer Bortle 2 coastal positions. A long-exposure camera will pick up the glow before the eye does. The Bay of Fundy coast faces north with open water horizons that suit a low aurora arc.
What Kp is needed for aurora near Saint John?
Kp 5-6 from dark sites on the Bay of Fundy coast. The Kp index - a global measure of geomagnetic activity on a 0-9 scale, updated every 3 hours - needs to reach 5 to 6 before the auroral oval pushes far enough south to reach about 52° geomagnetic latitude. Kp is an average over three hours, so reaching the threshold is worth checking rather than a guarantee. From inside Saint John's light dome, the city glow masks all but the brightest part of such a storm, so head to a dark coastal site and look low on the northern horizon.
What are the best dark sky sites near Saint John?
Fundy Trail Parkway, 55 km east, is the most practical option with Bortle 2 coastal sky and a clear northern horizon. Fundy National Park at Point Wolfe, 90 km east, is a designated dark sky preserve with better organised access and a campground. Kouchibouguac National Park, 175 km northeast, is the best aurora observation site in New Brunswick but requires a significant drive. All three locations use the open water of the Bay of Fundy or Northumberland Strait as a natural dark foreground.
When is the best time to see northern lights in New Brunswick?
Aurora here is storm-driven, not seasonal. It depends on a strong geomagnetic storm reaching this latitude, which can happen at any time of year. Winter's only real edge is longer dark nights. The Atlantic coast weather pattern means fog and cloud are frequent year-round, so check marine and cloud forecasts as well as space weather. There is no reliable aurora season to plan around - watch the live storm forecast and head out when a Kp 5-6 event is predicted. An extreme storm on the scale of the May 2024 G5 event is the kind of occasion that brings the aurora well into reach.
How does Saint John compare to Nova Scotia for aurora?
Saint John and central Nova Scotia sit at similar geomagnetic latitudes, around 51-52°, and need much the same strong storm. Nova Scotia has Kejimkujik National Park - a Gold Tier Dark Sky Preserve - which offers better organised dark sky access than anything immediately outside Saint John. Cape Breton Highlands in northern Nova Scotia sits at a slightly higher geomagnetic latitude. For a dedicated aurora trip, Kejimkujik gives better infrastructure; for opportunistic viewing, Saint John and the Fundy coast are comparable.
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