B.C. Air Quality

Meteorological Monitoring

The Ministry of Environment monitors meteorological conditions in the field to determine their impact on local air quality. Meteorology is used to forecast poor air quality days, to produce the venting index, and for issuing air advisories. Meteorological data is also used in air quality dispersion modelling.

Network Description

There are approximately 50 meteorological monitoring stations run by Ministry of Environment, Metro Vancouver and industry (as required by permit) for the purpose of air quality monitoring.

The meteorological conditions measured by these stations can include: ambient temperature, relative humidity, wind speed, wind direction and precipitation. These measurements are updated hourly on the B.C.'s Air Quality Readings section of our website.


Meteorological data is uploaded in the same way as continuous air quality data. It is transmitted from the stations via cellular or telephone telemetry to a central Ministry of Environment database and the data is posted on B.C.'s Air Quality Readings every hour. The data is then validated and archived for further analysis, including modelling.

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