This seems to work for me.
In[]:=
airtemp=AirTemperatureData
Paderborn
CITY
,{DateObject[{2007,10,1}],DateObject[{2026,5,20}],"Day"}
Out[]=
TimeSeries
Time:
01 Oct 2007
to
24 Aug 2025
Data points: 6462

In[]:=
DateListPlot[%]
Out[]=
Also multiple cities are no problem.
In[]:=
airtemps=AirTemperatureData
Paderborn
CITY
,
Berlin
CITY
,
Munich
CITY
,{DateObject[{2007,10,1}],DateObject[{2026,5,20}],"Day"}
Out[]=
TimeSeries
Time:
01 Oct 2007
to
24 Aug 2025
Data points: 6462
,TimeSeries
Time:
01 Oct 2007
to
24 Aug 2025
Data points: 6450
,TimeSeries
Time:
01 Oct 2007
to
24 Aug 2025
Data points: 6462

In[]:=
DateListPlot[%]
Out[]=