Jardin Botanique, Montreal PM2.5 (fine particulate matter) AQI is 24 - Jardin Botanique, Montreal PM10 (respirable particulate matter) AQI is n/a - Jardin Botanique, Montreal NO2 (nitrogen dioxide) AQI is 15 - Jardin Botanique, Montreal SO2 (sulfur dioxide) AQI is 5 - Jardin Botanique, Montreal O3 (ozone) AQI is 18 - Jardin Botanique, Montreal CO (carbon monoxide) AQI is 6 -