Picture Gallery: East Anglia under a cloud of smog as air pollution levels soar
The Department for the Environment, Food and Rural Affairs has warned that our region is one of the worst-affected by "very high" levels of air pollution.
North-west Norfolk hit the highest warning level on Tuesday, but the smog has now spread across much of the East.
A gallery of images can be seen below
Have you taken any images of the smog today? If so, we'd love to see them. You can send them to anglianews@itv.com or you can get in touch with us on our Facebook page.
Read more: How asthma sufferers can stay safe despite "very high" pollution levels