Air Quality Data

Algoma Steel Inc. monitors local air quality through a network of ambient air quality monitoring stations which are operated and maintained by a third party.

Click on this link to view a map of the locations.

Three stations located on Bonney Street, West and Cathcart Street and 4th Avenue monitor for a multitude of parameters on a continuous and non-continuous basis. A summary of the non-continuous monitoring results are provided in quarterly reports which are available on the Algoma website. The air quality parameters monitored continuously are summarized below and include the following:

Total Reduced Sulphur (TRS)
The Ministry of Environment, Conservation and Parks ambient air quality criterion for TRS is 7 micrograms per cubic metre (5 parts per billion) for a 24 hour period and 13 micrograms per cubic metre for a 10 minute period (10 parts per billion).

Sulphur Dioxide (SO2)
The Ministry of Environment, Conservation and Parks ambient air quality criterion for SO2 is 275 micrograms per cubic metre for a 24 hour period and 690 micrograms per cubic metre for a 1 hour period.

Particulate Matter smaller than 10 microns and 2.5 microns in diameter (PM10 and PM2.5)
The adopted Ministry of Environment, Conservation, and Parks interim ambient air quality criterion for PM10 is 50 micrograms per cubic metre for a 24-hour period, which is based on a Canada Wide Standard. There is no criterion for PM2.5.

The following tables show the current data:

Local Air Quality Information
Sensor Location Parameter Units Value
71083 West and Cathcart Street SO2 ppb -2.2
71083 West and Cathcart Street TRS ppb 0
71083 West and Cathcart Street PM10 ug/m3S 61
71083 West and Cathcart Street PM2.5 ug/m3 14.6
71082 4th Avenue SO2 ppb 11.1
71082 4th Avenue TRS ppb 2
71082 4th Avenue PM10 ug/m3S 42
71082 4th Avenue PM2.5 ug/m3 14.5
71042 Bonney Street SO2 ppb 2.7
71042 Bonney Street TRS ppb 1
71042 Bonney Street PM10 ug/m3S 135
71042 Bonney Street PM2.5 ug/m3 26.9
Page last updated at 6:00 AM on Thursday, June 1, 2023(3)

Local Meteorological Information
Sensor Location Parameter Units Value
71042 Bonney Street Wind Speed km/hr 2.5
71042 Bonney Street Wind Direction Deg 66.2
71042 Bonney Street Ambient Temperature C° 19.6
71042 Bonney Street Relative Humidity % 64.6
71042 Bonney Street Barometric Pressure mb -9999
71042 Bonney Street Rain in 0.0
Page last updated at 6:00 AM on Thursday, June 1, 2023(3)

Notes:

  1. PM10 average is based on a 24-hour rolling average period.
  2. Wind speed and direction provide a vector mean of all the instantaneous samples of wind direction and wind speed sampled each hour. The direction refers to the degrees that the wind is blowing from with 0 being from due north and 180 being due south.
  3. Data is presented in Local Standard Time. This means that data may appear with a one hour offset timestamp during Daylight Time.
  4. If the value is presented as -9999, that indicates that a valid reading is not available for the most recent hour.