How We Collect Data
Collecting Air Samples
For decades, people have wondered how our forecasts are created. Some have even questioned the science behind pollen forecasting. At Aerobiology, our forecasts are grounded in real, measurable data—not assumptions. We operate 30 monitoring stations across Canada, each equipped with our Rotation Impaction Samplers (pictured here). Every day, these instruments collect air samples that capture the pollen and outdoor mould spores present in the atmosphere. The sampling heads are carefully removed and changed, and the collected material is sealed in vials and shipped to our laboratory. There, our analysts examine each sample under the microscope to identify and quantify every pollen and spore type present. This rigorous, hands-on process is the foundation of the forecasts Canadians rely on.
Lab Analysis & Identification
Once the shipments arrive at our Ottawa, Ontario laboratory, each dated rod is carefully removed, mounted onto a rod slide, stained, and examined under high‑powered microscopes. Our analysts identify every pollen and spore type present, covering more than 70 different pollen and outdoor mould species found across Canada. Each member of our team brings over 15 years of identification and counting experience, ensuring every particle is accurately classified and verified. To maintain consistency and reliability, we also perform weekly random quality checks to confirm that samples are being identified and counted correctly. After all counts are verified, the data is added to our database, which now includes more than 35 years of pollen and spore records from regions across Canada and around the world.
Creating Accurate Forecasts
Using more than 35 years of historical pollen and spore records—combined with real‑time lab results, weather patterns, tree canopy data, environmental conditions, and over a dozen additional variables—we deliver pollen forecasts that reach an average of 80% accuracy each season. This powerful blend of science and technology gives Canadians the confidence to plan their days, reduce exposure, and stay in control of their allergies. You can see our pollen forecast on The Weather Network, and for the most complete picture—including every pollen and outdoor mould (spore) type in the air—our Allergy Sufferers App puts the full forecast right at your fingertips.
Collecting Air Samples
For decades, people have doubted pollen forecasts, but ours are based on real data, not guesswork. Aerobiology operates 30 monitoring stations across Canada, collecting air samples daily. Each sample is carefully captured and sent to our lab for precise analysis.
Lab Analysis & Identification
In the lab, our team stains and examines each sample under microscopes, identifying pollen and spore types. Every particle is counted and verified to ensure accuracy and reliability.
Creating Accurate Forecasts
Using 35 years of historical data, combined with current lab results, we generate pollen forecasts that are almost 80% accurate. These forecasts allow Canadians to plan their days, protect themselves, and manage allergies effectively.
Allergy Sufferers App
Do you struggle with severe allergies or react to multiple types of pollen or outdoor mould? Stay ahead of your symptoms with the Allergy Sufferers App. Get personalized pollen and outdoor mould forecasts delivered straight to your phone, track daily levels up to 4 days in advance, and receive tailored push notifications with a premium subscription. Access practical tips to manage your allergies, log your symptoms and medications, and explore how everything connects in the interactive data visualizer. All forecasts are backed by 35 years of real pollen and spore data and current readings from our monitoring network giving you the most reliable insight into what’s in the air.
Have allergies? Learn more and download the app here
