Name: Pollen forecast for Rio de Janeiro (2026-10-16)
Creator: Pollen Count
Published: 2026-10-16T15:26:32Z
License: https://pollencount.org/terms/

The pollen count in Rio de Janeiro today is very high, driven mainly by Parthenium Weed.

V.HI

7 active species

Refreshing live forecast…

.forecast-refresh-status{display:none!important}.date-tab{cursor:default;opacity:.55}Showing today's cached forecast. Enable JavaScript to switch days and load live data.

4-Day Forecast:

Morning

Grass MED

Tree LOW

Weed HIGH

Afternoon

Grass MED

Tree LOW

Weed V.HI

Evening

Grass LOW

Tree LOW

Weed MED

Species	Level	Count
🌿 Parthenium Weed	V.HI	30 grains/m³
🌾 Grass (mixed)	MED	15 grains/m³
🌾 Bermuda Grass	MED	10 grains/m³
🌿 Fat Hen	MED	8 grains/m³
🌿 Ribwort Plantain	MED	7 grains/m³
+35 more tracked Cock's-foot Perennial Ryegrass Box Elder Alder Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Timothy Grass London Plane Black Poplar Mesquite White Oak Holm Oak English Oak Common Sorrel Russian Thistle Field Elm Stinging Nettle All species in the app: Android iOS
🌿 Parthenium Weed	HIGH	15 grains/m³
🌾 Grass (mixed)	MED	7 grains/m³
🌾 Bermuda Grass	MED	5 grains/m³
🌿 Fat Hen	LOW	4 grains/m³
🌿 Ribwort Plantain	LOW	3 grains/m³
+35 more tracked Cock's-foot Box Elder Alder Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Ash Mountain Cedar Perennial Ryegrass White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Timothy Grass London Plane Black Poplar Mesquite White Oak Holm Oak English Oak Common Sorrel Russian Thistle Field Elm Stinging Nettle All species in the app: Android iOS
🌿 Parthenium Weed	HIGH	16 grains/m³
🌾 Grass (mixed)	MED	11 grains/m³
🌾 Bermuda Grass	MED	7 grains/m³
🌿 Fat Hen	LOW	4 grains/m³
🌿 Ribwort Plantain	LOW	4 grains/m³
+35 more tracked Cock's-foot Perennial Ryegrass Box Elder Alder Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Timothy Grass London Plane Black Poplar Mesquite White Oak Holm Oak English Oak Common Sorrel Russian Thistle Field Elm Stinging Nettle All species in the app: Android iOS
🌿 Parthenium Weed	MED	14 grains/m³
🌾 Grass (mixed)	MED	11 grains/m³
🌾 Bermuda Grass	MED	8 grains/m³
🌿 Fat Hen	LOW	4 grains/m³
🌿 Ribwort Plantain	LOW	3 grains/m³
+35 more tracked Cock's-foot Perennial Ryegrass Box Elder Alder Pigweed Common Ragweed Western Ragweed Giant Ragweed Sagebrush Mugwort Paper Birch Silver Birch Downy Birch Australian Pine Japanese Cypress Hazel Japanese Cedar Mediterranean Cypress Ash Mountain Cedar White Mulberry Olive Pellitory-of-the-wall Upright Pellitory Timothy Grass London Plane Black Poplar Mesquite White Oak Holm Oak English Oak Common Sorrel Russian Thistle Field Elm Stinging Nettle All species in the app: Android iOS

Last updated: 15:26 UTC

4-Day Forecast	Tree	Grass	Weed
Fri 16 Oct	LOW	MED	V.HI
Sat 17 Oct	LOW	MED	HIGH
Sun 18 Oct	LOW	MED	HIGH
Mon 19 Oct	LOW	MED	MED

Map of Rio de Janeiro (-22.9068°, -43.1729°)

More in Brazil

Belo Horizonte São Paulo Curitiba Brasília Porto Alegre Salvador

What Pollen Levels Mean

LOW Symptoms are unlikely

MED Moderate risk of symptoms

HIGH Widespread symptoms likely

V.HI Expect significant symptoms

X.HI Extremely high symptom likelihood & severity