The United States Embassy on Tuesday, July 25 issued a security advisory to its citizens ahead of the vigils set to be held by Azimio la Umoja late in the day.
In a statement, the embassy warned that the events - set to be held across the country- could turn violent despite assurances from the opposition that the vigils will be peaceful.
According to the advisory, traffic interruptions may occur. As such the embassy advised US citizens to avoid the areas where the vigils will be held, monitor local media for updates, avoid crowds and keep a low profile.
"Actions to take include being aware of your surroundings, reviewing your personal security plans and carrying proper Identification.
"Have evacuation plans that do not rely on the US government," read the statement in part.
The Azimio Coalition led by former Prime Minister Raila Odinga is set to hold vigils across the country in honour of Kenyans who lost their lives during the anti-government protests staged in previous weeks.
Initially, the opposition had planned to stage another round of demonstrations but cancelled the protests and called on its supporters to hold vigils instead.
Azimio indicated that the events would be held at various points such as bus stops, social halls, county assemblies and county headquarters.
"Upon lighting the candles and laying the wreaths, groups organize themselves, sing our national anthem and say prayers for justice for those we lost and the injured.
"That here in Nairobi, leaders from the various pillars of society will gather at the designated location already communicated to say prayers, lay wreaths, light candles and launch a benevolence fund to aid victims and their families," Azimio instructed its supporters.
The National Police Service (NPS) under Inspector General Japhet Koome is yet to declare its stand on Wednesday's vigils.