Can you see the northern lights in District of Columbia tonight?
Unlikely: Kp 1.33 at 7:34 AM EDT falls short of the Kp 7 or so that District of Columbia's northern horizon requires.
Kp now
1.33
District of Columbia needs
Kp 7
Verdict
No chance
Sky tonight
Clear, 6% cloud
Kp from NOAA SWPC estimated planetary K index, read at 7:34 AM EDT. The NWS LWX gridded forecast provides cloud cover for Rock Creek Park.
What is Kp?
A 0-9 scale called Kp rates the current disturbance of Earth's magnetic field. Its name comes from planetarische Kennziffer, German for planetary index. Thirteen observatories worldwide take the measurements. Higher values mean the aurora reaches further south. Most of the northern US needs a Kp of 5 or higher, while northern Alaska sees it at Kp 0. Full Kp guide.
Why District of Columbia needs Kp 7
Because the aurora follows the magnetic field rather than the equator, geomagnetic latitude matters more than map latitude. At District of Columbia's northern edge, the reading is 48.3° geomagnetic; the oval only draws level with that latitude at about Kp 7, and the Kp number already includes roughly 5 degrees of cushion, because the high-altitude aurora hangs low on the horizon.
Where to watch from in District of Columbia
All three spots in District of Columbia can differ in cloud cover, so all three are worth a look. Rock Creek Park looks clearest tonight, at 6% cover.
| Spot | Cloud tonight | Clearest hour | Nearest town |
|---|---|---|---|
| Rock Creek Park | 6% Clear | 1:00 AM EDT | Washington |
| National Mall | 7% Clear | 3:00 AM EDT | Washington |
| Anacostia Park | 8% Clear | 3:00 AM EDT | Washington |
Can the northern lights reach Washington tonight?
| City | Kp needed | Right now |
|---|---|---|
| Washington | Kp 7 | No chance |
Each city's Kp value comes from its own coordinates and geomagnetic latitude, so the further south a city is in the state, the higher the Kp it needs.
Cloud cover, averaged over tonight's viewing window for each location, comes from NWS gridded forecasts.
The next three days
NOAA's three-hour Kp outlook. At its highest expected value, Kp 1.67 remains below the Kp 7 threshold District of Columbia requires.
| Day | Window | Kp | In range |
|---|---|---|---|
| Aug 23 | 00-03UT | 1.67 | No |
| Aug 24 | 00-03UT | 1.67 | No |
| Aug 25 | 00-03UT | 1.67 | No |
| Aug 23 | 03-06UT | 1.33 | No |
| Aug 24 | 03-06UT | 1.33 | No |
| Aug 25 | 03-06UT | 1.67 | No |
| Aug 23 | 06-09UT | 1.33 | No |
| Aug 24 | 06-09UT | 1.33 | No |
| Aug 25 | 06-09UT | 1.33 | No |
| Aug 23 | 09-12UT | 1.33 | No |
| Aug 24 | 09-12UT | 1.33 | No |
| Aug 25 | 09-12UT | 1.33 | No |
| Aug 23 | 12-15UT | 1.33 | No |
| Aug 24 | 12-15UT | 1.33 | No |
| Aug 25 | 12-15UT | 1.33 | No |
| Aug 23 | 15-18UT | 1.33 | No |
| Aug 24 | 15-18UT | 1.33 | No |
| Aug 25 | 15-18UT | 1.33 | No |
| Aug 23 | 18-21UT | 1.67 | No |
| Aug 24 | 18-21UT | 1.67 | No |
| Aug 25 | 18-21UT | 1.67 | No |
| Aug 23 | 21-00UT | 1.67 | No |
| Aug 24 | 21-00UT | 1.67 | No |
| Aug 25 | 21-00UT | 1.33 | No |
NOAA Space Weather Prediction Center three-day forecast, issued 2026 Aug 23 0030 UTC.
Watching from District of Columbia
- The aurora seldom appears overhead in District of Columbia; look at the northern horizon instead.
- Away from town lights, allow 20 minutes for your eyes to adjust.
- The aurora is most active from 10pm to 2am local, near magnetic midnight.
- A phone exposure of 3-5 seconds picks up color the eye cannot; a grey glow can photograph green.