Rio de Janeiro
Rio de Janeiro, Brazil
Today
May 6, 2026
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
4 AM12 PM11 PM
Sunrise
6:14 AM
Golden: 46min
Sunset
5:23 PM
Golden: 46min
True Darkness
6:40 PM
Stars visible
Add to Calendar
Get reminders for golden hour and dark sky windows
Morning Golden Hour
6:00 AM - 6:45 AM
Evening Golden Hour
4:52 PM - 5:38 PM
Dark Sky Window
6:40 PM onwards
📱 How to use:
- 1. Download the .ics file above
- 2. Open it with your calendar app (iPhone Calendar, Google Calendar, Outlook)
- 3. Events will be added automatically
- 4. You'll get 30-minute reminders before each window
30-min reminders
All calendar apps
Timezone aware
No sign-up needed
Moon Phase
84%
Phase
Waxing Crescent
Illumination
84%
Light Pollution
9
Class 1
DarkClass 5
SuburbanClass 9
City
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
0%
Clear skies - may lack drama for sunset photography
Morning
0%
Evening
0%
Overnight
0%
Precipitation
0%
Very unlikely
Wind
12
km/h avg
Gusts up to 31 km/h
🟡 Breezy - May affect tracking
Humidity
79%
High - May cause haze
Visibility
46.0
km
Excellent clarity
Temperature
27°C
High
/
21°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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