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Rio de Janeiro

Rio de Janeiro, Brazil
Today
Mar 24, 2026
Poor

Netflix & Chill Night (Too Cloudy)

A 30% illuminated waxing gibbous drowns out all but the very brightest objects.

Tonight's Forecast
0
/ 100
First Light Index
Poor
Our proprietary metric combining sky clarity, moon interference, and light pollution for optimal stargazing conditions.
0
/ 100
Shutter Score
Fair
Photography-specific metric factoring cloud quality and golden hour potential for landscape shooters.

Light Windows Today

Blue HourGolden HourGolden HourBlue Hour
4 AM12 PM11 PM
Sunrise
5:57 AM
Golden: 43min
Sunset
5:59 PM
Golden: 43min
True Darkness
7:14 PM
Stars visible

Add to Calendar

Get reminders for golden hour and dark sky windows

Morning Golden Hour
5:44 AM - 6:27 AM
Evening Golden Hour
5:29 PM - 6:13 PM
Dark Sky Window
7:14 PM onwards
📱 How to use:
  1. 1. Download the .ics file above
  2. 2. Open it with your calendar app (iPhone Calendar, Google Calendar, Outlook)
  3. 3. Events will be added automatically
  4. 4. You'll get 30-minute reminders before each window
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Moon Phase

30%
Phase
Waxing Gibbous
Illumination
30%
⚡ Moderate Moon Interference
Moon will reduce visibility of dimmer objects

Light Pollution

9
Class 1
DarkClass 5
SuburbanClass 9
City
Rio de Janeiro Classification
Poor for Astronomy
Bortle Class 9: Inner City Sky

Inner city sky

Visible Tonight

Entire sky brightly lit, only Moon, planets, and brightest stars visible

💡 Urban Sky Recommendation
Focus on lunar and planetary observation. Consider driving to a darker location for deep sky work.
💡 Tip: Check "Nearby Dark Sky" section below to find better observing sites within driving distance

Weather Conditions

Cloud Cover
21%
Ideal scattered clouds for vibrant sunset colors
Morning
44%
Evening
0%
Overnight
48%
Precipitation
0%
Very unlikely
Wind
10
km/h avg
Gusts up to 26 km/h
🟢 Calm - Excellent for tracking
Humidity
77%
High - May cause haze
Visibility
24.1
km
Excellent clarity
Temperature
33°C
High
/
22°C
Low
Seeing
4
/ 5
Excellent - Atmospheric stability
Transparency
2
/ 5
Moderate - Air clarity
Conditions Summary
🌫️ Hazy conditions - Bright objects only, consider light pollution filters

Nearby Dark Sky Locations

Within 100km

Água Rasa

Bortle
9
3
Dramatic improvement
342.3km·~4h 17min

Pompéu

Bortle
9
3
Dramatic improvement
446.5km·~5h 35min
💡 These locations have significantly darker skies (9 → 3). Expect 64x more visible stars.

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