WearOS Toolkit now has AQI and timekeeper complications among others!
Check the link at the bottom to see all the available complications. More will be added soon!
New Complications added
AQI Supports SHORT_TEXT and LONG_TEXT complication slots. Shows the air quality index in a scale. 1 = Good 2 = Fair 3 = Moderate 4 = Poor 5 = Very Poor Tapping on it will reveal more details.
Timekeeper Supports SHORT_TEXT complication slots. Shows the time remaining or passed depending on the time and date you select. If you select the current or an earlier date/time then it will count up else it will countdown adding also an alarm.