Research Article

Public Health Implications of Solar UV Exposure during Extreme Cold and Hot Weather Episodes in 2018 in Chilton, South East England

Table 1

Cold weather alert (CWA) and heat-wave alert (HWA) periods and trigger thresholds.

Alert periodTrigger threshold

CWA1 November–31 March2°C mean temperature forecast to last 48 h and/or severe snow and ice
HWA1 June–15 SeptemberMaximum daytime temperature of 30°C and a minimum night-time temperature of 15°C for at least 2 consecutive days (on average-varies by region)