diff --git a/download_daily_files.py b/download_daily_files.py
index 17c27d9..69e7d9f 100755
--- a/download_daily_files.py
+++ b/download_daily_files.py
@@ -86,7 +86,7 @@ def main():
 
     logger.info("SW ACE RT...")
     try:
-        SWACE().download_and_process(time_now)
+        SWACE().download_and_process(date_yesterday_start, time_now)
     except Exception:
         logger.error("Encountered error while downloading ACE RT solar wind. Traceback:")
         logger.error(traceback.format_exc())
@@ -100,7 +100,7 @@ def main():
 
     logger.info("SW DSCOVR...")
     try:
-        DSCOVR().download_and_process(time_now)
+        DSCOVR().download_and_process(date_yesterday_start, time_now)
     except Exception:
         logger.error("Encountered error while downloading DSCOVR solar wind. Traceback:")
         logger.error(traceback.format_exc())
diff --git a/swvo/io/solar_wind/ace.py b/swvo/io/solar_wind/ace.py
index 6df6207..87e6cf1 100644
--- a/swvo/io/solar_wind/ace.py
+++ b/swvo/io/solar_wind/ace.py
@@ -83,6 +83,10 @@ def download_and_process(self, start_time: datetime, end_time: datetime) -> None
         start_time = enforce_utc_timezone(start_time)
         end_time = enforce_utc_timezone(end_time)
 
+        current_time = datetime.now(timezone.utc)
+
+        assert end_time < current_time, f"End time: {end_time} cannot be in the future. Current time: {current_time}!"
+
         assert start_time < end_time, "Start time must be before end time!"
 
         temporary_dir = Path("./temp_sw_ace_wget")
@@ -100,6 +104,11 @@ def download_and_process(self, start_time: datetime, end_time: datetime) -> None
                 logger.debug(f"Processing ACE source files for {request_date.date()} ...")
                 processed_df = self._process_single_file(temporary_dir, mag_file_name, swepam_file_name)
                 self._save_processed_data(processed_df)
+        except Exception as e:
+            logger.error(f"Failed to download and process: {e}")
+            if temporary_dir.exists():
+                rmtree(temporary_dir, ignore_errors=True)
+            raise
         finally:
             rmtree(temporary_dir, ignore_errors=True)
 
diff --git a/swvo/io/solar_wind/read_solar_wind_from_multiple_models.py b/swvo/io/solar_wind/read_solar_wind_from_multiple_models.py
index 24c9a9f..3926017 100644
--- a/swvo/io/solar_wind/read_solar_wind_from_multiple_models.py
+++ b/swvo/io/solar_wind/read_solar_wind_from_multiple_models.py
@@ -118,9 +118,7 @@ def read_solar_wind_from_multiple_models(  # noqa: PLR0913
             )
         except ValueError as e:
             if not isinstance(model, DSCOVR):
-                raise
-
-            logger.warning(f"Failed to read DSCOVR data because: {e}. Falling back to ACE.")
+                logger.warning(f"Failed to read DSCOVR data because: {e}. Falling back to ACE.")
             # switch to SWACE if SWACE is already in the model_order, otherwise create a new instance of SWACE with "./data" as the data directory
             # also log this fallback action
             active_model = next((m for m in model_order if isinstance(m, SWACE)), None)