London Weather: Hottest Day of 2026 So Far
On March 6, 2026, London experienced its hottest day of the year thus far, with temperatures soaring to 19.2°C in Northolt. This significant weather event has drawn attention as the city prepares for fluctuating conditions over the weekend.
The day began with cloudy skies and a high likelihood of rain, particularly around 4 PM, where the chance of precipitation was estimated at 90%. Despite the rain forecast, the maximum temperature for the day was projected to reach 13°C around 1 PM, although it felt slightly cooler at 12°C due to humidity levels.
Looking ahead, the weather is expected to shift. On Saturday, March 7, temperatures will drop slightly, with a maximum of 12°C and a minimum of 8°C overnight. The following day, Sunday, March 8, is anticipated to bring a rise in temperatures again, peaking at 15°C around 3 PM. This fluctuation in temperatures is not uncommon for London during this time of year.
Adding to the complexity of the weather situation, a high pollution alert has been issued for London, attributed to Saharan dust covering the city. Pollution levels are forecasted to be very high on Friday, dropping to low levels on Saturday, and then returning to medium levels on Sunday. The authorities are urging residents to take precautions during this period.
Mete Coban, a local environmental advocate, emphasized the importance of public awareness, stating, “We are urging Londoners to look after themselves in this high pollution period, stop their engines idling, and refrain from burning wood or garden waste – all of which contribute to high levels of pollution.” This statement highlights the health risks associated with high pollution levels, particularly during the current weather conditions.
Humidity levels will also play a significant role in the overall weather experience. Starting at 75% on Friday morning, humidity is expected to rise to 91% overnight, before decreasing to 67% by Sunday afternoon. Such variations can significantly affect how temperatures feel to residents, making it crucial to stay informed about the changing weather.
Winds will be blowing from the northeast to east at speeds ranging from 5 to 7 miles per hour over the weekend, which may provide some relief from the humidity but will not significantly alter the overall weather pattern. As the weekend approaches, residents are advised to stay updated on the latest forecasts and pollution advisories.
As the city navigates these weather changes, Professor Gideon Lack noted, “March-April is tree pollen season rather than grass pollen which kicks in May-July,” indicating that those with allergies should be prepared for potential discomfort as pollen levels rise in conjunction with the warming temperatures.