Poor air quality is expected on Wednesday and into the beginning of 2018, according to San Joaquin Valley Air.
On Dec. 27, air quality will be a red level, meaning unhealthy.
The unhealthy air quality levels are expected to remain into next week until a change in current weather patterns.
Burning in Kern, Fresno, Kings and Tulare counties is prohibited on Wednesday. The curtailment applies to burning wood and pellets in unregistered residential stoves and inserts as well as burning wood, pellets, manufactured fire logs in fireplaces or outdoor burning devices such as fire pits and chimneys.
Valley Air says a persistent and strong high-pressure system has caused an exceptionally strong inversion layer, resulting in poor dispersion conditions and concentrating particulate matter to unhealthy levels.
Outside exposure during periods of poor air quality could aggravate lung disease, trigger asthma attacks and bronchitis and increase the risk of respiratory infections, according to Valley Air. Older adults and children should avoid prolonged exposure outside or heavy exertion.
Residents can check the nearest air monitor to their location to determine localized air-quality conditions as they change throughout the day by clicking here.