Why One Number Instead of Three
Most allergy and weather apps show you three separate pieces of information: a pollen count, an air quality index (AQI), and weather data. You're then expected to mentally integrate these into a decision about your day. The problem: these three factors interact with each other in ways that make the individual numbers less useful than their combination.
High ozone AQI on a moderate pollen day can feel worse than low AQI on a high pollen day — because ozone inflames airways and amplifies allergic reactivity. High wind on a low-count day can redistribute settled pollen and spike actual exposure. Post-rain days consistently produce higher-than-forecast counts. The Anthos Score integrates these relationships into a single, actionable number: how challenging is today for someone managing allergies?
The Score Formula
Pollen Component (50%): Based on the severity-weighted combined pollen count for your location. The dominant species (highest count) contributes most, with allergenicity weighting — oak and birch score higher than pine at the same count because their allergenicity is greater. Severity levels from the Anthos scale (Low/Moderate/High/Extreme) anchor the scoring.
AQI Component (35%): Uses the EPA's standard AQI but weighted for allergy-specific relevance. Ozone and PM2.5 receive higher weighting than CO or SO₂ because they have the most direct interaction with allergic airway reactivity. An AQI of 150 driven by ozone scores worse for allergy sufferers than an AQI of 150 driven by CO.
Weather Component (15%): Wind speed and direction (high wind = higher pollen redistribution), humidity (low humidity = pollen stays airborne longer), barometric pressure (drops can trigger mast cell degranulation in some patients), and precipitation (rain suppresses pollen but creates post-rain spikes).
What Each Score Range Means
| Score Range | Rating | What It Means | Typical Action |
|---|---|---|---|
| 1–25 | ● Great | Excellent conditions. Minimal allergen and pollutant burden across all factors. | Ideal day for extended outdoor activities. |
| 26–45 | ● Good | Low overall burden. Most people will feel comfortable outdoors without extra precautions. | Normal day. Minor precautions for highly sensitive individuals. |
| 46–65 | ● Moderate | Noticeable burden from at least one factor. Sensitive individuals may notice symptoms. | Heads up. Check which factor is elevated and adjust accordingly. |
| 66–80 | ● High | Significant burden. Most allergy sufferers will be symptomatic without precautions. | Limit outdoor time. Follow daily management protocol. |
| 81–100 | ● Extreme | Exceptional burden from multiple factors. High-risk conditions for sensitive individuals. | Stay indoors when possible. Maximum precautions. |
Score vs Personal Threshold
The Anthos Score is a population-calibrated metric — it represents conditions for allergy sufferers generally. Your Personal Threshold is calibrated to your specific body. On a day when the Anthos Score reads 55 (Moderate), your personal threshold for oak may already be exceeded — making it a High day for you specifically, even though the generic score reads Moderate.
Both numbers appear on the Anthos Today screen. The Score tells you about general conditions; the threshold comparison tells you about YOUR conditions. Together, they give you the most complete picture of what today means for your body.
Get your Anthos Score every morning.
One number that integrates pollen, air quality, and weather into your daily picture — plus your personal threshold showing where you specifically stand.
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Anthos provides general wellness information only. Nothing in this article constitutes medical advice, diagnosis, or treatment. Always consult a licensed healthcare professional before making health decisions.