The provincial air quality objective for coarse particles, PM₁₀, is 50 micrograms per cubic metre, averaged over 24 hours. The 24 hour PM₁₀ rolling average was 84 µg/m³ at the Plaza 400 downtown, 86 µg/m³at BCR and not available College Heights at 9 a.m. this morning. 

 

The provincial air quality objective for fine particles, PM_2.5, is 25 micrograms per cubic metre, averaged over 24 hours. The 24 hour PM_2.5 rolling average was 72 µg/m³ at the Plaza 400 downtown site and not available at College Heights at 9 a.m. this morning.