Masterton is facing a winter air pollution crisis that could lead to a clampdown on woodburners and fines being imposed on people breaching the outdoor fire ban.
The sudden onset of cold nights has created inversion problems and monitoring of pollution levels has shown air quality levels have been breached on three occasions.
Masterton District Council's regulatory manager Sue Southey said in the past week alone officers have had to attend three illegal outdoor fires which belched smoke into the atmosphere adding to the problem.
Residents in the urban area are prohibited from lighting outdoor fires from May 1 to July 31 and extending that ban until the end of August is now under consideration.
Under the town's by-laws those who flout the ban are liable to a fine of $200.