Daily pollen overview
Riverside 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.
Riverside pollen summary for 2026-08-29
Modeled daily averages are 39 grains/m³ tree pollen, 8 grains/m³ grass pollen, and 54 grains/m³ ragweed. NAB risk levels are tree Moderate, grass Moderate, and ragweed High.
Selected day snapshot
Averages and peaks derived from Sat, Aug 29, 2026.
Avg total
100
grains/m³
Avg tree
39
Avg grass
8
Avg ragweed
54
Species breakdown
Daily average grains/m³ for each reported allergen.
Tree
Elm39
Ash0
Oak0
Pine0
Birch0
Maple0
Mulberry0
Poplar/Cottonwood0
Cypress/Juniper/Cedar0
Grass
Grass8
Ragweed
Ragweed54
Peak total
119
Peak ragweed
64
Hourly samples
8
Avg total per hour: 100
| Time (America/Los_Angeles) | Tree | Grass | Ragweed | Total | Risk |
|---|---|---|---|---|---|
| 17:00 | 31 | 6 | 44 | 81 | Tree ModerateGrass ModerateRagweed Moderate |
| 18:00 | 37 | 7 | 52 | 96 | Tree ModerateGrass ModerateRagweed High |
| 19:00 | 46 | 9 | 64 | 119 | Tree ModerateGrass ModerateRagweed High |
| 20:00 | 42 | 8 | 59 | 109 | Tree ModerateGrass ModerateRagweed High |
| 21:00 | 40 | 8 | 56 | 104 | Tree ModerateGrass ModerateRagweed High |
| 22:00 | 40 | 8 | 56 | 104 | Tree ModerateGrass ModerateRagweed High |
| 23:00 | 42 | 8 | 58 | 108 | Tree ModerateGrass ModerateRagweed High |
| 00:00 | 31 | 6 | 44 | 81 | Tree ModerateGrass ModerateRagweed Moderate |
Next 48 hours (forecast)
Ambee hourly forecast in local time (UTC).
Loading forecast…