Current Weather Snapshot

Note: if the wind speed is zero, the wind direction (if shown) is that when the wind was last blowing.

Cambridge Computer Laboratory Rooftop Weather at 01:46 AM on 07 May 21:

Temperature:  2.8 C
Pressure:     1009 mBar
Humidity:     80 %
Dewpoint:     -0.3 C
Wind:         0 knots from the W
Sunshine:     0.0 hours (today)
Rainfall:     0.0 mm since midnight

Summary:      humid, very cold, calm

Cambridge Weather
At 01:46 - humid, very cold, calm, 2.8 C
  • There is a known issue with the sunlight and rain sensors sometimes over-reporting readings. We are investigating how best to fix this and we should be able to correct archived records once the problem is resolved.

Graphs: TodayToday   YesterdayYesterday
Maps: LightningLighting map

The dials show the current Cambridge weather readings, as taken on the roof of our building by the DTG Weather Station. Also available as:

Archive data since 1995

Data quality and uses

This is an amateur-maintained weather station. At the moment, we strongly advise against using the data here in statistical analysis without prior cleaning and calibration using other sources. It would be easy to draw incorrect conclusions otherwise, because:

  • Observations are not gathered in similar conditions to ones used by the Met Office
  • Our sensors are not calibrated against references
  • Some sensors have been changed over time with ones working on different principles (see implementation)
  • Data contains inaccuracies, and the documented list is not exhaustive

Most of those issues can be corrected for, by pre-processing the raw data. However, we have not yet released any quality-controlled dataset.

Feedback

Please drop us a line if you discover any inaccuracies in the reported weather data, or if you have general feedback, comments or questions.

Other info

If you wonder what "Dew Point" means, see here for a simple explanation, or here for more than you want to know.