Ottawa
Ontario, Canada
Today
Feb 21, 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
Poor
Photography-specific metric factoring cloud quality and golden hour potential for landscape shooters.
Light Windows Today
4 AM12 PM11 PM
Sunrise
6:54 AM
Golden: 59min
Sunset
5:38 PM
Golden: 59min
True Darkness
7:17 PM
Stars visible
Add to Calendar
Get reminders for golden hour and dark sky windows
Morning Golden Hour
6:36 AM - 7:35 AM
Evening Golden Hour
4:57 PM - 5:57 PM
Dark Sky Window
7:17 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
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No sign-up needed
Moon Phase
14%
Phase
Waxing Gibbous
Illumination
14%
💡 Slight Moon Interference
Moon may affect darkest sky observations
Light Pollution
9
Class 1
DarkClass 5
SuburbanClass 9
City
DarkClass 5
SuburbanClass 9
City
Ottawa 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
89%
Overcast - poor conditions for photography
Morning
100%
Evening
69%
Overnight
100%
Precipitation
51%
Likely
Wind
21
km/h avg
Gusts up to 52 km/h
🔴 Windy - Challenging conditions
Humidity
81%
High - May cause haze
Visibility
15.8
km
Excellent clarity
Temperature
-4°C
High
/
-18°C
Low
Seeing
2
/ 5
Fair - Atmospheric stability
Transparency
1
/ 5
Hazy - Air clarity
Conditions Summary
🌪️ Poor seeing - Stick to wide-field imaging or wait for better atmospheric stability
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