ha nublado
Antepresente para el sujeto él/ella/usted del verbo nublar.

nublar

En algún momento, no sé cuándo, todo el cielo se ha nublado.
At some moment, I don't know when, the whole sky was cloudy.
El cielo se ha nublado.
The sky had clouded over.
Algunos de los participantes informaron que durante los últimos años, el cielo se ha nublado por las estelas químicas y un cielo azul sin nubes, rara vez está por verse.
Some participants reported that for the last few years the sky has been clouded by chemtrails and a cloudless blue sky is seldom to be seen.
Hace un rato la playa estaba llenísima, pero el cielo se ha nublado y ya queda menos gente.
A while ago the beach was crowded, but the sky has clouded over and there are fewer people now.
Se ha nublado bastante y he decidido volver a la autocaravana y descansar un poco.
Sky has been covered and I have decided to go to the caravan to rest a little.
Por ejemplo, he deducido que la N que se escribe al revés es una I, en cambio la H es una N. Se ha nublado bastante y he decidido volver a la autocaravana y descansar un poco.
For example, I have deduced that N that is written turned is I, however H is N. Sky has been covered and I have decided to go to the caravan to rest a little.
Palabra del día
la leña