UK tourists are among holidaymakers being advised to avoid the surrounding area, but not including the tourist areas of Diani or Moi international airport which serves the city.
There is a high threat from terrorism, including kidnapping. The main threat comes from extremists linked to Al Shabaab, a militant group that has carried out attacks in Kenya in response to Kenya's military intervention in Somalia.
There has been a spate of small-scale grenade, bomb and armed attacks in Nairobi (especially the area of Eastleigh), Mombasa, and North Eastern Province.
You should take care in public places where people gather, and exercise a heightened level of vigilance.
In the last few days the Kenyan government has pledged to step up security for tourists following a number of terrorist-related incidents.
More top news
The MK912 spitfire was forced to make an emergency landing soon after taking off.
Showers ease in the north tonight, with it becoming very warm in the southeast tomorrow.
A mass inhalation of "hippy crack" was carried out in the shadow of Parliament on Saturday in protest at the Government's drug policy.