Daily pollen overview
Grand Rapids 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.
Grand Rapids pollen summary for 2026-08-29
Modeled daily averages are 19 grains/m³ tree pollen, 3 grains/m³ grass pollen, and 26 grains/m³ ragweed. NAB risk levels are tree Moderate, grass Low, and ragweed Moderate.
Selected day snapshot
Averages and peaks derived from Sat, Aug 29, 2026.
Avg total
48
grains/m³
Avg tree
19
Avg grass
3
Avg ragweed
26
Species breakdown
Daily average grains/m³ for each reported allergen.
Tree
Elm19
Ash0
Oak0
Pine0
Birch0
Maple0
Mulberry0
Poplar/Cottonwood0
Cypress/Juniper/Cedar0
Grass
Grass3
Ragweed
Ragweed26
Peak total
84
Peak ragweed
46
Hourly samples
8
Avg total per hour: 48
| Time (America/Detroit) | Tree | Grass | Ragweed | Total | Risk |
|---|---|---|---|---|---|
| 20:00 | 32 | 6 | 46 | 84 | Tree ModerateGrass ModerateRagweed Moderate |
| 21:00 | 29 | 5 | 41 | 75 | Tree ModerateGrass ModerateRagweed Moderate |
| 22:00 | 17 | 3 | 24 | 44 | Tree ModerateGrass LowRagweed Moderate |
| 23:00 | 14 | 2 | 19 | 35 | Tree LowGrass LowRagweed Moderate |
| 00:00 | 14 | 2 | 20 | 36 | Tree LowGrass LowRagweed Moderate |
| 01:00 | 14 | 2 | 20 | 36 | Tree LowGrass LowRagweed Moderate |
| 02:00 | 14 | 2 | 20 | 36 | Tree LowGrass LowRagweed Moderate |
| 03:00 | 14 | 2 | 20 | 36 | Tree LowGrass LowRagweed Moderate |
Next 48 hours (forecast)
Ambee hourly forecast in local time (UTC).
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