Daily pollen overview
St Louis pollen count
Aggregated Ambee readings across the last 345 day(s). Select a day to load hourly detail.
Risk levels use category-specific National Allergy Bureau thresholds. Weed is labeled Ragweed because it is the sole weed species in the current multi-region dataset.
St Louis pollen summary for 2026-08-29
Modeled daily averages are 27 grains/m³ tree pollen, 5 grains/m³ grass pollen, and 37 grains/m³ ragweed. NAB risk levels are tree Moderate, grass Moderate, and ragweed Moderate.
Selected day snapshot
Averages and peaks derived from Sat, Aug 29, 2026.
Avg total
69
grains/m³
Avg tree
27
Avg grass
5
Avg ragweed
37
Species breakdown
Daily average grains/m³ for each reported allergen.
Tree
Elm27
Ash0
Oak0
Pine0
Birch0
Maple0
Mulberry0
Poplar/Cottonwood0
Cypress/Juniper/Cedar0
Grass
Grass5
Ragweed
Ragweed37
Peak total
104
Peak ragweed
56
Hourly samples
8
Avg total per hour: 69
| Time (America/Chicago) | Tree | Grass | Ragweed | Total | Risk |
|---|---|---|---|---|---|
| 19:00 | 40 | 8 | 56 | 104 | Tree ModerateGrass ModerateRagweed High |
| 20:00 | 36 | 7 | 51 | 94 | Tree ModerateGrass ModerateRagweed High |
| 21:00 | 32 | 6 | 45 | 83 | Tree ModerateGrass ModerateRagweed Moderate |
| 22:00 | 27 | 5 | 38 | 70 | Tree ModerateGrass ModerateRagweed Moderate |
| 23:00 | 19 | 3 | 27 | 49 | Tree ModerateGrass LowRagweed Moderate |
| 00:00 | 22 | 4 | 30 | 56 | Tree ModerateGrass LowRagweed Moderate |
| 01:00 | 19 | 3 | 27 | 49 | Tree ModerateGrass LowRagweed Moderate |
| 02:00 | 17 | 3 | 24 | 44 | Tree ModerateGrass LowRagweed Moderate |
Next 48 hours (forecast)
Ambee hourly forecast in local time (UTC).
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