Will You Sleep Well Tonight?
A live score (0-100) combining geomagnetic activity, moon phase, Schumann resonance and pressure changes — the four factors most strongly linked to sleep latency and restlessness.
What This Means Tonight
A mostly settled night. One or two mild factors are pushing the index down, but nothing dramatic. Most sleepers will not notice anything; sensitive individuals may take slightly longer to drift off.
Tonight: aim to be in bed by 22:30, no screens after 21:00, magnesium glycinate may help if you tolerate it. Hydrate generously — geomagnetic storms tend to dehydrate sensitive individuals.
SQI Through the Night
Estimated index at 22:00, midnight, 02:00 and 04:00 — based on the 24-hour Kp peak from NOAA SWPC.
How We Calculate the Score
Base 100. Each factor subtracts points based on how disturbed it is. The minimum is zero — we never flatter the data.
Geomagnetic activity (Kp index)
NOAA's 0-9 index of solar-driven magnetic disturbance. Penalties scale from −5 (Kp 3) to −40 (Kp 7+).
Moon phase
Full moon ±2 days = −10. Sleep labs (Cajochen 2013) confirm shorter REM and reduced sleep duration around the full moon.
Schumann resonance
Storm = −15, active = −8, elevated = −3. Drawn from the cross-station average across 6 stations on 3 continents.
Barometric pressure drop
Drops of 5 hPa or more in 6 hours = −10. Severe drops (8+ hPa) = −15 — the same range linked to migraine and joint pain.
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Mind your sleep window
On disturbed nights, going to bed 30 minutes earlier compensates for fragmented sleep architecture later.
No screens after 21:00
Blue light suppresses melatonin precisely when geomagnetic noise is already disrupting circadian signalling.
Last coffee before 14:00
Caffeine half-life is 6 hours. On a Kp-5 night, even an afternoon espresso lingers when you need it gone.
Consider magnesium glycinate
200-400 mg an hour before bed. Calms the nervous system and is gentler on the gut than oxide forms.
How Cosmic Weather Affects Sleep
Your pineal gland — the melatonin factory — is electromagnetically sensitive. Geomagnetic storms (Kp 5+) reliably correlate with reduced melatonin secretion overnight, measurable in saliva and urine.
The full moon adds a smaller but consistent effect. A 2013 Cajochen study at the University of Basel (in a strict sleep lab, blackout conditions) found 30% less deep sleep, 20-minute longer sleep latency and 5 minutes less total sleep around the full moon — even when participants could not see it.
Atmospheric pressure changes act through a third mechanism: vagal nerve stimulation. Sharp drops trigger the same autonomic cascade that gives migraine sufferers headaches — and it disrupts the parasympathetic dominance you need for deep sleep.
Explore
Pressure-Drop Headache Score
Barometric pressure + solar activity rolled into a daily risk index for 8 cities.
Check todayCurious how recent nights scored?
Every past night since 31 March 2026 has its own retroactive sleep assessment — based only on what we actually measured.
Browse the archiveSleep + Cosmic Weather FAQ
Why does the Kp index affect my sleep?
The Kp index measures geomagnetic field disturbance from solar wind. When it spikes, your pineal gland produces less melatonin — the hormone that drives sleep onset and depth. Multiple peer-reviewed studies (Babayev 2002, Palmer 2006) have shown the correlation, even if the mechanism is still debated.
Does the moon really affect sleep, or is that folklore?
Both. Folklore noticed it first; sleep labs confirmed it. The cleanest study (Cajochen et al., Current Biology 2013) ran in a windowless underground lab so participants did not know the moon phase — and still found measurable differences. The effect is small but real.
Will my partner / cat / kids sleep worse too?
Children and electromagnetically sensitive adults often show stronger effects. Pets — especially cats — frequently get restless during geomagnetic storms; trainers and farmers have noted this for centuries. If you sleep with a partner, you will both feel a bad-SQI night, just to different degrees.
Should I take melatonin during geomagnetic storms?
Possibly — 0.3-1 mg, 30 minutes before bed. Higher doses are no more effective and can leave morning grogginess. Magnesium glycinate is a gentler alternative many sensitive individuals prefer. We are not doctors; talk to yours if you take prescription sleep medication.
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See the Schumann resonance, Kp index and moon phase live on the dashboard — so tomorrow's forecast is never a surprise.
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