I have created an app that measures 7 Air pollution parameters (like dust, and car pollution, etc...) and combine the results in to the final pollution level: this is the app description and here is a link to the app.
My suggestion is about UX, rather than on UI and visualization.
Your job is to solve a problem, not make a picture. This is from the Three charts are all I need, as well as the following quote:
You can spend days, weeks, or even months working on visualizations of data, but does that benefit the business most? In most cases, a simple visualization will get the job done and free you up to solve the next most pressing problem that the business has.
Try to answer the questions: Do your users really need these parameters displayed? What's in it for users? Are these help to make some decisions?
Consider the fragment of the infographics:
The great test of the usefulness is "So What?" from the Designing Data-Driven Interfaces:
So why do we put all this data on the page anyway? Answer: so people can do shit with it — make decisions, investigate, predict the future, whatever. The point is, your users aren't marveling at the pretty colors you've selected, they are trying to do their jobs.
So here’s my advice — after you've gotten your page laid out and everything is crafted just right, ask yourself “so what?”. Look at each graph, widget, chart, table, and ponder what someone will glean from it. Often times you'll come to the conclusion, “it doesn't matter”, which a red flag to reduce or rethink.
As for visualizing the parameters, the most clear way is to use horizontal bars and the description of the parameters. Place these on separate screen for those, who really need to dive into the details.
Agreed, adding more complicated charts may provide more information but may not necessarily make the app more useful. Here is a good example from Cole Nussbaumer's Storytelling with Data book. I made the interactive version using ZingChart, since that's the charting library I'm most familiar with.
Even though you're technically taking the chart away, you're making the key information easier to consume.