Blast of dust through tunnels around Turnpike Lane

Rushes of air on the deep level tube lines is commonplace. The effect is amplified on the Jubilee and Victoria lines as the higher speeds with the limited clearance aswell as more modern and powerful ventilation systems can make ears pop.

The dust could be the remnants of works the previous night such as rail grinding and welding , replacing worn track, sleepers or work the the tunnels themselves. Often after engineering work as finished ventilation systems will be cranked up in attempt to remove as much dust as possible. The extra volume of air being pumped down into the tunnels may have unsettled dust already in your carriage but it is more likely to unsettle dust in the tunnels due to the combination of the change in air pressure and tight clearance created between the train and the tunnel walls.

Those who travel on the new tracks on the Bakerloo line around Paddington may get the same dust effect although it's effect may be limited due to tunnel width and the position of ventilation shafts.

This was probably the same cause, although seems to have caused rather more alarm
www.standard.co.uk/news/london/manor-house-smoke-turnpike-lane-rush-hour-fire-alert-commuters-scream-9750087.html

The weather may have an effect - a stronh wind blowing across the top of the shaft may affect the pressure inside it