Quebec, Canada
Northern lights in Rivière-du-Loup
Answer
Tonight
Waiting on darkness
It is not civil-dark yet. The next dusk is listed below.
Observed 11:49 UTC, forecast 13:20 UTC, 91 min lead
Clock times in America/Toronto
Storm level needed
Rivière-du-Loup sits at 47.83N 69.54W in Quebec, Canada. The IGRF-14 centered dipole puts Rivière-du-Loup at 57.0 degrees geomagnetic latitude, 9.2 degrees closer to the magnetic pole than its map latitude suggests. Rivière-du-Loup sits at 57.0 degrees geomagnetic. By SWPC's rule the average oval edge is overhead at Kp 5, and aurora is usually visible on the northern horizon at G1 (Kp 5) or less.
"aurora is commonly visible at high latitudes (northern Michigan and Maine)"
The nearest other Glow towns are Rimouski (102 km), Edmundston (104 km), Saguenay (131 km). Rimouski sits 0.6 degrees higher on the dipole and needs the same Kp.
Approximate: SWPC calls its Kp to latitude rule an average, and a centered dipole can differ by a degree from fuller field models. How the storm level is matched
The year in darkness
Every night of 2026 at Rivière-du-Loup has some civil darkness; the shortest month sample still has 6.5 hours. Every evening of the year at Rivière-du-Loup clears Glow's dark-season bar of 4 hours of civil night between 18:00 and 06:00. Rivière-du-Loup's longest night of the year, Dec 19, has 14 h 18 min of civil night.
Solar midnight at Rivière-du-Loup, when the sun is lowest, falls at 23:33 on local clocks on December 15 and 00:38 on June 15. That is 27 min before midnight in December and 38 min after midnight in June, the gap set by daylight saving and the equation of time. So at Rivière-du-Loup the darkest hour sits near the middle of SWPC's 10 PM to 2 AM window in winter.
Month by month
| Month | Night | Civil | Cloud | Clear dark | |
|---|---|---|---|---|---|
| Jan | 13.9 h | 11.4 h | 67% | 4.6 hbest | |
| Feb | 12.5 h | 10.1 h | 67% | 4.1 h | |
| Mar | 11.0 h | 8.5 h | 64% | 4.0 h | |
| Apr | 9.1 h | 6.3 h | 67% | 3.0 h | |
| May | 7.5 h | 3.8 h | 70% | 2.3 h | |
| Jun | 6.5 h | 1.0 h | 66% | 2.2 h | |
| Jul | 7.0 h | 2.7 h | 64% | 2.5 h | |
| Aug | 8.5 h | 5.5 h | 61% | 3.3 h | |
| Sep | 10.3 h | 7.8 h | 58% | 4.3 h | |
| Oct | 12.0 h | 9.6 h | 69% | 3.7 h | |
| Nov | 13.5 h | 11.1 h | 75% | 3.4 h | |
| Dec | 14.3 h | 11.7 h | 73% | 3.9 h |
By the 15th-of-the-month sample, December is the darkest month at Rivière-du-Loup with 14.3 hours of civil night and June the lightest at 6.5. Across the year Rivière-du-Loup gets 3,831 hours of civil night. Astronomical night at Rivière-du-Loup, the sun 18 degrees or more below the horizon, lasts 11.7 hours on December 15.
NASA POWER's 2001 to 2020 all-hours climatology puts mean cloud amount for the 1 degree cell around Rivière-du-Loup at 67% across the year, from 58% in September to 75% in November. In the months with at least 4 hours of civil night Rivière-du-Loup averages 67%, against a median of 67% for Glow towns in Canada.
Multiplying civil night by the clear share of the sky gives January the best score, 4.6 hours, ahead of September at 4.3. Rivière-du-Loup's equinox months score 4.0 in March and 4.3 in September, the weeks SWPC links with larger storms.
Kp history
From 1996 to 2025, the GFZ Potsdam record shows a 3-hour Kp of 5 or more, the level that puts the average oval edge over Rivière-du-Loup, on 10% of days. At Rivière-du-Loup's level the share runs from 5% in December to 14% in September, while storm days with Kp 5 or more made up 10%.
Share of UTC days in each calendar month whose highest 3-hour Kp reached Kp 5. Kp history by year
Moon, next 30 nights
Over the 30 nights from Oct 1, the new moon falls on Oct 10 and the full moon on Oct 26, in America/Toronto dates. 15 of the 30 nights at Rivière-du-Loup have at least 2 moon-free dark hours inside 10 PM to 2 AM, and Oct 6 has the most at 4 h. Tonight Rivière-du-Loup has 11 h 14 min of civil night, 1 h 55 min of it with the moon down.
- 1
66% lit
1.9 h
- 2
55% lit
3.0 h
- 3
43% lit
4.3 h
- 4
32% lit
5.7 h
- 5
22% lit
7.1 h
- 6
14% lit
8.4 h
- 7
7% lit
9.8 h
- 8
3% lit
11.1 h
- 9
0% lit
11.7 h
- 10
0% lit
11.7 h
- 11
3% lit
11.8 h
- 12
7% lit
11.8 h
- 13
12% lit
11.7 h
- 14
19% lit
11.1 h
- 15
27% lit
10.3 h
- 16
36% lit
9.4 h
- 17
45% lit
8.4 h
- 18
55% lit
7.3 h
- 19
64% lit
6.2 h
- 20
73% lit
5.0 h
- 21
82% lit
3.8 h
- 22
89% lit
2.6 h
- 23
95% lit
1.4 h
- 24
99% lit
0.1 h
- 25
100% lit
0.0 h
- 26
98% lit
0.0 h
- 27
94% lit
0.0 h
- 28
88% lit
0.6 h
- 29
79% lit
1.7 h
- 30
69% lit
2.9 h
Each cell is the night that starts on that date. Hours are civil-dark time with the moon below the horizon; the green rule scales with them. Green outline: new moon. Bone outline: full moon.
Within Canada
Among the 31 Glow towns in Quebec, Rivière-du-Loup ranks 9th by dipole latitude against a regional median of 55.3 degrees; Sept-Îles sits highest at 59.3. Among the 130 Glow towns in Canada, Rivière-du-Loup ranks 43rd by dipole latitude against a national median of 55.3 degrees; Yellowknife sits highest at 68.5. On December 15 Rivière-du-Loup gets 14.3 hours of civil night, 54th longest of 130 in Canada, where the median is 14.2.
Questions
- Can you see the northern lights in Rivière-du-Loup?
- Rivière-du-Loup sits at 57.0 degrees geomagnetic. By SWPC's rule the average oval edge is overhead at Kp 5, and aurora is usually visible on the northern horizon at G1 (Kp 5) or less. Clear, dark sky over Rivière-du-Loup still decides it.
- When is it dark enough in Rivière-du-Loup?
- Every night at Rivière-du-Loup has civil darkness. Tonight has 11 h 14 min, and December 15 has 14.3 hours.
- What is the best month for aurora in Rivière-du-Loup?
- January, by civil night at Rivière-du-Loup times the clear share of the sky from NASA POWER's 2001 to 2020 average.
- How cloudy is Rivière-du-Loup in the dark months?
- About 67% mean cloud amount over Rivière-du-Loup in the months with at least 4 hours of civil night, from NASA POWER's 2001 to 2020 all-hours climatology.
- How often is activity high enough for Rivière-du-Loup?
- A 3-hour Kp of 5 or more, the level that puts the average oval edge overhead, occurred on 10% of days from 1996 to 2025 in the GFZ Potsdam record.
Nearby and related
Nearest Glow towns
Rivière-du-Loup by month
Region and comparisons