Summer smog reaches dangerous levels as weather turns chaotic (UK)

From heat-haze and summer smog to outsize hailstones and flash floods: more topsy-turvy weather is on the way, Britain’s forecasters say.

Air pollution has been worsening because of the current heatwave and reached potentially harmful levels yesterday in a number of locations across the country, especially in the South and East. Severe thunderstorms are likely in some places today, with torrential rain and even an outside chance of tornadoes.