Daily pollen overview
Chicago pollen count
Aggregated Ambee readings across the last 346 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.
Chicago pollen summary for 2026-08-29
Modeled daily averages are 22 grains/m³ tree pollen, 4 grains/m³ grass pollen, and 31 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
58
grains/m³
Avg tree
22
Avg grass
4
Avg ragweed
31
Species breakdown
Daily average grains/m³ for each reported allergen.
Tree
Elm22
Ash0
Oak0
Pine0
Birch0
Maple0
Mulberry0
Poplar/Cottonwood0
Cypress/Juniper/Cedar0
Grass
Grass4
Ragweed
Ragweed31
Peak total
96
Peak ragweed
52
Hourly samples
8
Avg total per hour: 58
| Time (America/Chicago) | Tree | Grass | Ragweed | Total | Risk |
|---|---|---|---|---|---|
| 19:00 | 37 | 7 | 52 | 96 | Tree ModerateGrass ModerateRagweed High |
| 20:00 | 28 | 5 | 40 | 73 | Tree ModerateGrass ModerateRagweed Moderate |
| 21:00 | 24 | 4 | 34 | 62 | Tree ModerateGrass LowRagweed Moderate |
| 22:00 | 26 | 5 | 36 | 67 | Tree ModerateGrass ModerateRagweed Moderate |
| 23:00 | 19 | 3 | 26 | 48 | Tree ModerateGrass LowRagweed Moderate |
| 00:00 | 16 | 3 | 23 | 42 | Tree ModerateGrass LowRagweed Moderate |
| 01:00 | 14 | 2 | 20 | 36 | Tree LowGrass LowRagweed Moderate |
| 02:00 | 14 | 2 | 20 | 36 | Tree LowGrass LowRagweed Moderate |
Next 48 hours (forecast)
Ambee hourly forecast in local time (UTC).
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