Our Sky is an app that crowdsources qualitative sky color data collected by citizens and matches them with quantitative aerosol measurements (AOD) taken from Aeronet. Users create their own sky photo calendars, look at sky color data collected around the world, and compare daytime sky color with AOD levels and sunset color.

This project is solving the My Sky Color challenge.


What color is your sky?

You might say blue, but how blue? And is it really blue? Why does it matter?

For our project, we address the My Sky Color challenge (https://2015.spaceappschallenge.org/about). Our goal was to create an app where citizens could take and collect information and photos of the sky and become more conscious of and involved with air quality and pollution issues

Problem: The air is filled with tiny particles called aerosols that come from both natural events (such as condensation and dust storms) as well as human activities (such as burning of fossil fuels or digging the earth). Not all aerosols are negative, but air pollution can have diverse negative effects on the environment as well as on human health.

Our Solution: Studying the sky color and air quality will increase awareness of air quality and the effects of aerosol. The user takes a photo without any color adjustment and rates it for blueness (and consequently clearness). The app will then take time, GPS, and aerosol data and compile it so that it can be viewed in a calendar. If the user wishes, he or she can also input cloud information using the app's cloud identifier. The data that is collected across the globe will be visualized for users to enjoy each others' contributions. Furthermore, we hope to draw more interest and involvement by visualizing sky blueness with aerosol level and sunset color. Sunsets can be very moving and human experiences and perhaps people might be curious to see how the different measures correlate with each other.

Project Information

License: Apache License 2.0 (Apache-2.0)

Source Code/Project URL: https://github.com/sonya/oursky


Concept Slides - https://docs.google.com/presentation/d/1C6KjSJ9fNM_VNQ9kPmvD35Etsv1J-ychrffeDL358Gw/edit?usp=sharing


  • Mijeong Takahashi
  • Kazumasa Okabe
  • Suguru Murakami
  • sonya huang
  • Mijeong Takahashi