Tonight's Sky

Observing site: 41.5468°N, 81.0813°W · as of Wed May 20, 7:52 PM EDT

Day at a glance

6 AM

Noon

6 PM

Color shows where we are in the day. Black = astronomical night (true dark sky). Vertical line = right now.

Sun

Sunrise: 5:58 AM
Sunset: 8:43 PM
Solar noon: 1:20 PM
Day length: 14h 44m
Altitude now: 39.3°
Azimuth now: 262.4°

Twilight

Civil dusk: 9:13 PM
Nautical dusk: 9:54 PM
Astro dusk: 10:40 PM
Astro dawn: 4:01 AM
Nautical dawn: 4:47 AM
Civil dawn: 5:28 AM

Astronomical twilight = sun > 18° below horizon (true dark sky).

Moon

Waxing Crescent

Illumination: 22.5%
Moonrise: 9:27 AM
Moonset: 12:32 AM
Status: Below horizon
Altitude: 71.5°
Azimuth: 160.4°
Distance: 367,034 km
Next full moon: Sun May 31, 2026 (in 11 days)
Next new moon: Sun Jun 14, 2026 (in 25 days)

Astronomical clock

Local time: 7:52:16 PM EDT
UT: 23:52:16 UTC
Date (UT): 2026-05-20
Day of year: 140
Julian date: 2461181.4946

Weather

Now: Overcast, 50°F
Humidity: 65%
Wind: 9 mph
Today high: 66°F
Tonight low: 47°F
Precip chance: 71% today (0.07" expected)
Tomorrow: Overcast, 59°/43°

Weather See more

Averages for upcoming nights

Today
Thu 21
Fri 22
Sat 23
Sun 24
Mon 25
Tue 26

Open-Meteo — updated every 30 min.

Space weather

Kp index: 2.0 (Quiet — no aurora visible from Ohio.)
Peak (next 72h): Kp 3.7 at Wed 11pm
Solar wind: 469 km/s
X-ray flux: Class B8.3 (quiet sun)
Recent flares: C1.0 Wed 6am · C1.0 Wed 12am · C1.4 Tue 6pm

SWPC aurora forecast ↗

Air quality

US AQI: 28 Good
PM2.5: 0.5 µg/m³
PM10: 0.5 µg/m³
Aerosol optical depth: 0.12 Clean — good transparency
UV index: 0.2

Aerosol optical depth is the most direct astronomical metric here — high AOD means stars look dimmer and DSOs lose contrast.

Meteor showers

Eta Aquariids ~50/hr

Radiant: Aquarius · Peaked 15 days ago — fading

Moon now: Some moonlight (22% illuminated)

NWS forecast (Cleveland WFO)

Tonight 45°F

Mostly Cloudy

Mostly cloudy, with a low around 45. North wind 5 to 8 mph.
Thursday 60°F

Mostly Sunny
Thursday Night 46°F

Mostly Clear
Friday 64°F

Chance Rain Showers

Plain-English from the Cleveland NWS office. Full discussion ↗

Sky-conditions forecast

Clear-sky forecast for our observing site, courtesy of Astrospheric.

Loading Astrospheric forecast…

Members-only perk: CVAS members get free Astrospheric Pro (unlimited forecasts, sky-condition alerts, and longer-range outlooks) via a private group code shared inside the members area. Become a CVAS member →

Stargazing conditions — next 24 hours, hourly

Indian Hill Observatory. Data via Open-Meteo. Green = good · yellow = marginal · red = poor.

7 PM

Wed

now

Poor

36/100

Wed 7 PM Thu 1 AM Thu 7 AM Thu 1 PM Thu 6 PM

Cloud cover 100%

High clouds 100%

Humidity 64%

Dew spread 12°F

Wind 9 mph

Precip chance 5%

Temperature 50°F

Dew point 39°F

Wind gusts 19 mph

peak gust this hour

Drag the slider (or tap) to scrub. Each hour\'s rating is the worst of cloud, humidity, wind, and precipitation, weighted toward cloud cover. More detail above in Astrospheric; for raw data, Clear Dark Sky and 7Timer use overlapping data sets.

Live imagery

GOES-19 Geocolor — Great Lakes

GOES-19 Geocolor animated loop, Great Lakes sector

Animated Geocolor loop from NOAA STAR. Loop auto-refreshes every 10 minutes while this tab is active.

GOES-19 Sandwich — Great Lakes

GOES-19 Sandwich (visible + longwave IR) animated loop, Great Lakes sector

Visible + longwave-IR overlay loop from NOAA STAR. The IR layer makes tall thunderstorm tops, jet-stream clouds, and cloud-top temperatures pop in 3D — useful day and night. Refreshes every 10 minutes.

NWS Radar — Cleveland (KCLE)

Cleveland-area radar loop from NWS. Auto-refreshes every 2 minutes while this tab is active.

All-Sky Camera — Lyra

Live all-sky camera, auto-refreshed every 60 s. Open full viewer ↗

Data from sunrise-sunset.org, ipgeolocation.io, Open-Meteo, and the US Naval Observatory. Cached up to 1 hour. Astrospheric forecast on the homepage.