Northern Lights in Pennsylvania: Tonight's Aurora Forecast
Pennsylvania needs about Kp 6 on the northern horizon. Live NOAA Kp, tonight's cloud cover and moon, the aurora oval map, and the darkest places to watch from.
Aurora season is open — equinox weeks bring the most stormsThe Pennsylvania aurora season at a glance
Live · NOAA SWPCCherry Springs became the second DarkSky Park in the world in 2008; on good nights the Milky Way casts shadows there, and Kp 6 storms show a green arc over the north ridge.
Can you see the northern lights tonight in Pennsylvania?
The verdict below combines NOAA SWPC's planetary Kp forecast with the Kp 6 that Pennsylvania's darkest northern spots need, tonight's cloud cover from Open-Meteo at Cherry Springs State Park, the moon, and the hours of full darkness. Then each city and dark-sky site gets its own cloud reading — the sky often clears inland when the lakeshore or coast is socked in.
Reading NOAA SWPC and Open-Meteo for Cherry Springs State Park · Pennsylvania tonight…
Tonight, city by city and site by site
| Location | Cloud tonight | Kp tonight | Verdict |
|---|---|---|---|
| Philadelphia, PA city | … | … | … |
| Pittsburgh, PA city | … | … | … |
| Bradford, PA city | … | … | … |
| Cherry Springs State Park DarkSky Park | … | … | … |
| Presque Isle State Park, Erie est. Bortle 4 | … | … | … |
| Kinzua Bridge State Park est. Bortle 3 | … | … | … |
| Ricketts Glen State Park est. Bortle 3 | … | … | … |
Cloud is the 9 pm–3 am average from Open-Meteo for each point; Kp is NOAA SWPC's maximum forecast for tonight. City rows use a city-center location — drive to a dark northern horizon for the real thing.
The aurora oval over Pennsylvania right now
NOAA's OVATION model maps where aurora is likely overhead in the next 30–90 minutes. Green cells mean a small chance, red a strong one. The map opens on Cherry Springs State Park; enter a ZIP to recenter, and widen the span to see the whole oval across Canada.
Loading the NOAA OVATION aurora forecast…
Best places to see the northern lights in Pennsylvania
Cherry Springs is the obvious answer, and it fills up on storm nights — arrive before sunset and use only red lights in the overnight field. Lake Erie's shore at Presque Isle is the alternative when Potter County is clouded in.
Cherry Springs State Park
Certified in 2008, the second DarkSky Park in the world, on a 2,300-ft plateau — one of the darkest public skies in the eastern US.
Presque Isle State Park, Erie
A sand spit curling into Lake Erie, with open water filling the northern horizon — the best low, unlit north view in the state.
Kinzua Bridge State Park
Allegheny National Forest dark zone with the skywalk as a north-facing platform.
Ricketts Glen State Park
Lake Jean on the Allegheny Front — dark and high, two hours from Scranton.
When to see the northern lights in Pennsylvania
September – November autumn season
The equinox weeks around September 22 are statistically the most geomagnetically active of the year, and nights are long again. For Pennsylvania this is the best window to catch a G3+ storm, which happen most often around the equinoxes.
December – February cold and clear
Geomagnetic activity dips, but long nights and cold dry air give the best transparency of the year. Watch the 3-day forecast; any G3+ storm is worth a drive north.
March – April spring season
The March equinox brings the second annual peak in geomagnetic storms. Nights are still long in March. By late April the late sunsets start to cut into viewing time.
May – August short nights
Short nights and twilight — summer haze and late sunsets make faint displays hard to see. Big storms still punch through: NOAA rated the 10–11 May 2024 event G5, the top of its scale, and it was seen across most of the lower 48.
How to see — and photograph — the aurora from Pennsylvania
Kp, geomagnetic latitude, and solar cycle 25
The aurora forms in an oval around the geomagnetic pole, which sits over northern Canada rather than at the geographic pole. That tilt is why the eastern United States is magnetically "further north" than the West: Pennsylvania is at about 50° geomagnetic latitude. The planetary K-index (Kp, 0–9) measures how disturbed Earth's magnetic field is; as Kp rises, the oval expands toward the equator by roughly 2° of latitude per step. From Pennsylvania's darkest northern areas, Kp 6 brings the oval's edge into view on the horizon; Kp 8 puts it overhead.
NOAA's G-scale is a simpler label on the same thing: G1 (Kp 5) minor, G2 (Kp 6) moderate, G3 (Kp 7) strong, G4 (Kp 8) severe, G5 (Kp 9) extreme. Solar cycle 25 reached its maximum in 2024–2025 — NOAA rated the 10–11 May 2024 storm G5, the top of its scale — and the declining phase of a cycle historically produces the biggest individual storms, so 2026 and 2027 remain good years to watch. Storms also cluster near the equinoxes, which is why September–October and March–April are "aurora season" everywhere in the lower 48.
Pennsylvania northern lights FAQ
More Pennsylvania nights and seasons
More Northeast northern lights forecasts
Live Kp, NOAA scales and the OVATION aurora model are read in your browser from NOAA's Space Weather Prediction Center (services.swpc.noaa.gov); cloud cover and sunrise/sunset from Open-Meteo. Kp thresholds are climatological rules of thumb for a dark northern horizon, not guarantees, and Bortle classes are estimates. Hero image: “Northern Lights seen from the United States on May 11, 2024 - 4” — USDAgov — Public domain. National picture: which states can see the aurora tonight → · check your ZIP →