Harjumaa, Estonia
Northern lights in Maardu
Answer
Tonight
Waiting on darkness
It is not civil-dark yet. The next dusk is listed below.
Observed 11:55 UTC, forecast 13:26 UTC, 91 min lead
Clock times in Europe/Tallinn
Storm level needed
Maardu sits at 59.47N 24.98E in Harjumaa, Estonia. The IGRF-14 centered dipole puts Maardu at 57.1 degrees geomagnetic latitude, 2.4 degrees farther from the magnetic pole than its map latitude suggests. Maardu sits at 57.1 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 Tallinn (13 km), Helsinki (78 km), Espoo (84 km). Tallinn sits 0.0 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 Maardu has some civil darkness; the shortest month sample still has 1.8 hours. Glow's dark season, at least 4 hours of civil night between 18:00 and 06:00, runs from July 21 to May 21 across New Year, 305 days in 2026. Maardu's longest night of the year, Dec 21, has 15 h 57 min of civil night.
Solar midnight at Maardu, when the sun is lowest, falls at 00:15 on local clocks on December 15 and 01:20 on June 15. That is 15 min after midnight in December and 1 h 20 min after midnight in June, the gap set by daylight saving and the equation of time. So at Maardu 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 | 15.3 h | 11.9 h | 89% | 1.7 h | |
| Feb | 13.1 h | 9.9 h | 84% | 2.1 h | |
| Mar | 10.7 h | 7.4 h | 72% | 3.0 hbest | |
| Apr | 7.8 h | 2.8 h | 62% | 3.0 h | |
| May | 4.7 h | 0.0 h | 54% | 2.2 h | |
| Jun | 1.8 h | 0.0 h | 61% | 0.7 h | |
| Jul | 3.4 h | 0.0 h | 61% | 1.3 h | |
| Aug | 6.6 h | 0.0 h | 64% | 2.4 h | |
| Sep | 9.6 h | 6.0 h | 70% | 2.9 h | |
| Oct | 12.3 h | 9.1 h | 80% | 2.5 h | |
| Nov | 14.6 h | 11.3 h | 88% | 1.8 h | |
| Dec | 15.9 h | 12.4 h | 89% | 1.7 h |
By the 15th-of-the-month sample, December is the darkest month at Maardu with 15.9 hours of civil night and June the lightest at 1.8. Across the year Maardu gets 3,518 hours of civil night. Astronomical night at Maardu, the sun 18 degrees or more below the horizon, lasts 12.4 hours on December 15.
NASA POWER's 2001 to 2020 all-hours climatology puts mean cloud amount for the 1 degree cell around Maardu at 73% across the year, from 54% in May to 89% in January. In the months with at least 4 hours of civil night Maardu averages 75%, against a median of 75% for Glow towns in Estonia.
Multiplying civil night by the clear share of the sky gives March the best score, 3.0 hours, ahead of April at 3.0. Maardu's equinox months score 3.0 in March and 2.9 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 Maardu, on 10% of days. At Maardu'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 2, the new moon falls on Oct 10 and the full moon on Oct 26, in Europe/Tallinn dates. 15 of the 30 nights at Maardu have at least 2 moon-free dark hours inside 10 PM to 2 AM, and Oct 6 has the most at 4 h. Tonight Maardu has 11 h 10 min of civil night, 46 min of it with the moon down.
- 2
58% lit
0.8 h
- 3
47% lit
2.3 h
- 4
35% lit
4.1 h
- 5
25% lit
5.9 h
- 6
16% lit
7.6 h
- 7
9% lit
9.2 h
- 8
4% lit
10.8 h
- 9
1% lit
11.8 h
- 10
0% lit
11.8 h
- 11
2% lit
11.9 h
- 12
5% lit
12.0 h
- 13
10% lit
12.1 h
- 14
17% lit
12.2 h
- 15
25% lit
12.3 h
- 16
33% lit
11.8 h
- 17
43% lit
10.6 h
- 18
52% lit
9.1 h
- 19
62% lit
7.7 h
- 20
71% lit
6.2 h
- 21
79% lit
4.8 h
- 22
87% lit
3.3 h
- 23
93% lit
1.8 h
- 24
98% lit
0.3 h
- 25
100% lit
0.0 h
- 26
99% lit
0.0 h
- 27
96% lit
0.0 h
- 28
90% lit
0.0 h
- 29
81% lit
0.0 h
- 30
72% lit
1.3 h
- 31
61% lit
3.0 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 Estonia
Among the 2 Glow towns in Harjumaa, Maardu ranks 2nd by dipole latitude against a regional median of 57.1 degrees; Tallinn sits highest at 57.1. Among the 7 Glow towns in Estonia, Maardu ranks 2nd by dipole latitude against a national median of 56.5 degrees; Tallinn sits highest at 57.1. On December 15 Maardu gets 15.9 hours of civil night, 1st longest of 7 in Estonia, where the median is 15.9.
Questions
- Can you see the northern lights in Maardu?
- Maardu sits at 57.1 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 Maardu still decides it.
- When is it dark enough in Maardu?
- Every night at Maardu has civil darkness. Tonight has 11 h 10 min, and December 15 has 15.9 hours.
- What is the best month for aurora in Maardu?
- March, by civil night at Maardu times the clear share of the sky from NASA POWER's 2001 to 2020 average.
- How cloudy is Maardu in the dark months?
- About 75% mean cloud amount over Maardu 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 Maardu?
- 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.
- Why does this page point to Tallinn?
- Maardu sits within 15 km of Tallinn with the same rounded dipole latitude, Kp and dark season, so Glow treats Tallinn as the main page for both.
Nearby and related
Nearest Glow towns
Maardu by month
Region and comparisons