Shortly after 5pm officers from Orana-Mid Western Police District were called to a home on Glasson Street, following reports a house was well alight.

Officers from Fire and Rescue NSW attended and extinguished the blaze.

MAP: The street where the fire occurred ...

A crime scene was established, and initial investigations suggested the fire was deliberately lit.

Police will allege a 52-year-old man was doused in petrol during the incident. He suffered serious burns to over 60 percent of his body.

He was treated at the scene by NSW Ambulance paramedics before being taken to Wellington District Hospital and later airlifted to Concord Hospital where he remains in a critical condition.

A 46-year-old man was later located at another Wellington residence where he was also treated by NSW Ambulance paramedics for burns.

He was arrested and taken to Dubbo Base Hospital under police guard for assessment before being taken to Dubbo Police Station.

The man was charged with causing wounding and grievous bodily harm with intent to murder (domestic violence) and refused bail to appear before Dubbo Local Court on Friday.