Release comparison
What changed in the latest release?
Only like-for-like validated score changes appear here. A methodology reset is never presented as a city getting healthier or less healthy.
| City | Previous score | Current score | Change |
|---|---|---|---|
| No comparable score changes are published for this release. Version 2 does not compare against the invalid legacy methodology. | |||
Why this page may be quiet
The v2 structural index changes only when slow-moving source data change. Current AQI can move hourly, but it is not used to manufacture ranking movement.