Screen shots of the Ayer app, taken from the iPhone simulator.

Challenges and considerations

Two main challenges emerged during this project: data resolution and limited user engagement opportunities.

Data Resolution
While AQI data is widely available through multiple APIs, the sensors that generate it are often located far from where people actually live and work. This raises questions of relevance: if the data doesn’t feel truly hyperlocal, users may lose trust and disengage. Air quality is also shaped by complex factors such as wind patterns, which adds further uncertainty.

User Engagement & Guidance
AQI categories are mapped to general public health recommendations, but these tend to be broad and not particularly actionable—especially for groups with heightened lung sensitivities. The current recommendations are often too generic to be useful (see table below). Organizations such as the American Lung Association may offer more specific and relevant guidance, which could be integrated into future iterations.

AQI ValueStatusDescription
47 GoodAir quality is satisfactory, and air pollution poses little or no risk.
52 ModerateAir quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
129 Unhealthy for sensitive groupsMembers of sensitive groups may experience health effects. The general public is less likely to be affected.
176 UnhealthySome members of the general public may experience health effects; members of sensitive groups may experience more serious health effects.


These challenges highlight the gap between what’s currently possible and what users actually need—setting the stage for exploring the shift from the current state to a more effective target state.

What’s built. What comes next.

The following table represents my road map. The two key priorities for target state are IoT integration and a concept redesign (e.g. items below).

Current State Target State
2.0 Dashboard Screen1.0 Authentication
3.0 City Search Form2.1 Redesign dashboard views
3.1 Search Results Screen5.1 Global AQI Rubric
4.0 City Details Screen6.3 Tips / Guidance
4.1 Save City to List7.0 Integrate IoT
4.2 Remove City from List7.1 Indoor air data
5.0 Data modeling7.2 IoT Device Control / Mgmt.
6.0 LearningAQI Concept Redesign
6.1 AQI Basics ScreeniOS / Android Widgets
6.2 Air Pollutants ScreenAQI Sentiment Analysis
Welcome AnimationUse Testing
Dark mode

Note

This case study captures the first iteration of Āyer — from the initial spark to a working prototype. In the next update, I’ll share how I mapped user personas, journeys, and feedback, along with a competitive landscape and framing that broaden the story from concept to impact.