Weatheradio Canada (French: Radiométéo Canada) is a Canadian weather radio network owned and operated by Environment and Climate Change Canada's Meteorological Service of Canada division. It is one of the two weather radio systems across North America, and is an official partner of the National Weather Service. Weatheradio Canada is headquartered in Montreal, Quebec and transmits in both official languages (English and French) from 230 sites across Canada. Weatheradio Canada, as well as Environment Canada's weather telephone service Hello Weather, utilizes Nuance Communications text to speech voices. Starcaster^[1] Text to Speech, owned by STR-SpeechTech Ltd, was used from 1994 to 2021 (to 2022 to today in some places).

In most locations, the service broadcasts on one of seven specially-allocated VHF radio frequencies, audible only on dedicated "weather band" receivers or any VHF radio capable of receiving 10 kHz bandwidth FM signals centred on these assigned channels, which are located within the larger "public service band". The radio frequencies used by Weatheradio Canada are the same as those used by its American counterpart, NOAA Weather Radio (whose parent agency, the U.S. National Weather Service, is also a partner with the Meteorological Service of Canada) and receivers designed for use in one country are compatible for use in the other. Since 2004, the service has used Specific Area Message Encoding (SAME) alerting technology to disseminate severe weather bulletins. Weatheradio has indicated that, in 2021, it also plans to add other hazard and civil emergency information (such as natural disasters, technological accidents, AMBER alerts and terrorist attacks) to its broadcasts.^[2]

In some locations, primarily national parks, provincial parks and remote communities with little or no local media service, a transmitter operated by the Canadian Broadcasting Corporation carries the service on a standard AM or FM broadcast frequency. As of August 2007, most of these AM and FM transmitters were unlicensed by the CRTC under a special license exemption granted to low-power non-commercial broadcasters.^[3]

In 1976, Environment Canada's Weatheradio service was launched and expanded to 30 locations in roughly 10 years. In the early-1990s, increased government investment permitted major expansion of the network to the present size of 230 sites.

In September 2020, Environment and Climate Change Canada began soliciting feedback on possible decommissioning of 48 of its 230 transmitters. ECCC stated that the transmitters were predominantly located in areas of overlapping coverage and where alternate methods of access (such as cell phones and the Internet) were available.^[4]

On May 26, 2021, ECCC announced that during the Required Weekly Test, they would announce Weatheradio's transition into its new voice technology system. The previous Starcaster voices had been in use for over 27 years.^[5] Among the new voices for the service includes Nuance Tom, a newer version of a previous voice on NOAA Weather Radio. This transition began on June 1st of that year, and while supposed to end on New Year's Eve of 2021,^[6] some stations held out into 2022 before making the switch.^[7]

On August 19, 2022, an announcement was sent on 8 transmitters in the network regarding the impending decommission of said transmitters within the next 6 months. The 8 transmitters announced for decommissioning were: Cooking Lake, AB; Saskatoon, SK; Orillia, ON; Brockville, ON; Fredericton, NB; Perth-Andover, NB; Aspen-Melrose, NS and Grand Falls, NL.^[4]

Weatheradio Canada signals are transmitted using FM (10 kHz bandwidth), with band spacing of 25 kHz. In some, mainly remote, areas, Weatheradio Canada also transmits on the AM and FM bands. The average reach of these transmitters can vary from 40 to 50 miles, and over 90 percent of Canadians live within the listening area of a Weatheradio transmitter. ^[4] The service uses multiple frequencies:^[8]

• 162.400 MHz
• 162.425 MHz
• 162.450 MHz
• 162.475 MHz
• 162.500 MHz
• 162.525 MHz
• 162.550 MHz

Weather information is broadcast in both official languages which is English first then French. Prior to June 2021, broadcasts in Quebec were in the opposite order. The language order became uniform after new systems were installed. Weather alert broadcasts are inserted within the normal playlist, and are available in both official languages. Wind and wave marine forecasts are broadcast on a regular basis on transmitters located near marine zones. However, these and other forms of marine forecasts are more conveniently broadcast on the marine frequency, which is not available on most weather radios. One requires a special receiver capable of receiving the marine frequency, which varies by province. Weather broadcasts also include the UV index for the forecast day, and for the following day during the UV index season. The index runs from 1 (low) to 11+ (extreme). The air quality health index forecast is broadcast at the end of the broadcast cycle for cities in the station's service area.

• Alert Ready
• Alberta Emergency Alert
• Interagency Volcanic Event Notification Plan
• Forecast region
• Canadian Location Code
• NOAA Weather Radio
• Specific Area Message Encoding (S.A.M.E.)

• Weatheradio Canada
• Weatheradio transmitter directory - Weatheradio Canada
• Weatheradio - Transmitter lists (including AM and FM transmitters) - Weatheradio Canada
• Weatheradio - Transmitter Lists By Province (streema.com)
• DXinfocentre.com's list of Weatheradio transmitters