Maximum daily temperature (°C) recorded in the regions of England and Wales during the heatwave alert in June 2011*
| Region | Heat-Health Watch regional heatwave daytime threshold values (°C) | Maximum daily temperature (°C) | |
| 26 June 2011 | 27 June 2011 | ||
| East of England | 30 | 29.0 | 31.9 |
| East Midlands | 30 | 28.1 | 29.8 |
| London | 32 | 28.7 | 31.4 |
| Northeast England | 28 | 23.9 | 22.1 |
| Northwest England | 30 | 25.1 | 27.0 |
| Southeast England | 31 | 28.5 | 31.2 |
| Southwest England | 30 | 27.6 | 24.8 |
| West Midlands | 30 | 27.6 | 28.5 |
| Yorkshire & Humber | 29 | 27.8 | 29.6 |
| Wales | 30 | 26.8 | 23.4 |
The station for each region was chosen to be as representative as possible for each region as a whole. Bold values indicate exceedance of Heat-Health Watch regional threshold temperatures.
↵* Data provided by the Met Office National Climate Information Centre. Please note, this data is provisional and is still subject to quality control measures.