Public Health Wales has issued advice to members of the public affected. A spokesperson for Public Health Wales said: "Dry weather and ground conditions makes it is easier for wildfires to start. "Smoke from wildfires can irritate the eyes, nose and throat. People are being urged to take extra care as hot, dry conditions increase the risk of wildfires. Anyone suffering from smoke-related symptoms which don't improve when away from smoke or ash, are being urged to contact their GP or NHS 111.