Kvalita ovzduší Widget is an Android application by Jiří Lenert that displays the air quality in the Czech Republic. It shows the concentration of suspended particles PM10 in the air. The app is categorized under Lifestyle and subcategory Weather. The widget is an excellent tool to keep track of air quality, especially during smog alerts.

The Czech Hydrometeorological Institute provides the data for the application. The app is entirely free to use, and the developer welcomes feedback, but users are advised to avoid comments like "Nefunguje" without proper justification. The developer will address all issues, and missing data in a specific location is not a reason to rate the widget poorly. The widget requires a data connection, and data is updated every 30 minutes.

Overall, Kvalita ovzduší Widget is a highly functional tool for anyone concerned about air quality in the Czech Republic.