Bonfires and fireworks send November 5 air pollution levels soaring
In a major urban study, levels rose from around 20 micrograms/m3 during the day to 80 micrograms/m3 just before 11pm.
Bonfire Night
Latest Stories
Weather warnings for heavy rain could put dampener on fireworks displays
The Met Office has issued a number of weather warnings for the south of England on Saturday.
In Pictures: Torchlight parade kicks off annual Bonfire Society celebration
The event raises money for charity.