diff --git a/README.md b/README.md
index ee204d0..63f1734 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ Target features:
 
 - [X] Get data for real time measurements interpolated
 - [X] Get forecast data for PM10, PM2.5 and O3
-- [ ] Compute or fetch BelAQI index (observation and forecast)
+- [X] Compute or fetch BelAQI index (observation and forecast)
 - [ ] Maybe: also provide data from the stations and not only interpolation
 
 ## Attribution