HARS has three alert levels. The levels are based on the Humidex value.
*Humidex is a temperature index that describes how hot the weather actually feels to a person, by adding the effect of heat and humidity.
The Regional Public Health Offices monitor Humidex* values established by Environment Canada to determine when it is necessary to issue a Heat Alert. The Regional Public Health Offices advise the public that conditions exist that could result in negative health effects.
The heat alert will be issued:
- on the Government of New Brunswick main web page,
- the Department of Health twitter account @NBHealth
Level 1

When a Heat Alert (Level 1) is issued, certain vulnerable persons may be affected. The main cause of illness and death during a heat wave is the aggravation of pre-existing respiratory and cardiovascular diseases.
Level 2

When a High Heat Alert (Level 2) is called, everyone is at increased risk of heat stress and heat stroke under the conditions.
- People living alone without air conditioning are at high risk especially if the heat wave lasts many days.
- Check regularly on your neighbours and relatives to make sure they are not in danger
- Organizers of sport and recreational activities should build in regular water breaks and rest or consider rescheduling activities.
Level 3

During an Extreme Heat Alert (Level 3) everyone is at high risk for heat related illnesses and heat stroke.
- People living alone without air conditioning are at extreme risk.
- Check regularly on your neighbours and relatives to make sure they are not in danger.
- Organizers of sport and recreational activities should reschedule activities.