Pollen Count in Entroncamento
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In spring, from March to May, pollen is often high in Entroncamento. Many trees release it then. Olive trees, pine trees, and plane trees are common sources. Grass starts to grow too, so pollen can spread more in warm, windy days.
Updated: 7/9/2026
In early summer, from May to July, grass pollen is usually very active. Fields and roadsides can send out a lot of it. Grasses, cereal crops, and some wild plants release pollen. Dry weather can help the pollen travel farther through the air.
In late summer and early autumn, from August to October, weed pollen becomes more important. Plants like ragweed, mugwort, and plantain can release pollen then. Sunlight and dry days can keep pollen in the air, especially near empty lots and edges of roads.
In winter, from November to February, pollen levels are often lower in Entroncamento. Many plants rest during the cold months. Some trees may still release small amounts on mild days. Cypress trees and a few early bloomers can start pollen before spring arrives.
Pollen Forecast Chart
Recommendations
When pollen concentrations reach a peak, we suggest these simple steps to help with hay fever. These tips are extra important on windy days when plants are in peak anthesis (the time when they release the most pollen).
- Wear masks if necessary
- Shower after going out
- Wear sunglasses if windy
- Close windows and doors
- Use an indoor air purifier
- Avoid wearing woolen clothes outside
- Limit outdoor activities
Annual Pollen Overview
Check out this month-by-month overview of the daily average pollen count in Entroncamento 🌾. This data is based on previous years and serves as a guideline to help you understand when different pollen seasons typically occur in your city.
| Alder | Birch | Grass | Mugwort | Olive | Ragweed | |
|---|---|---|---|---|---|---|
| Jan | 1.5 | 0 | 0 | 0 | 0 | 0 |
| Feb | 3.7 | 0 | 0.4 | 0 | 0 | 0 |
| Mar | 1.6 | 17.4 | 15.9 | 0 | 0 | 0 |
| Apr | 0.3 | 6.1 | 126.1 | 0 | 2291.9 | 0 |
| May | 0 | 1.4 | 602.5 | 0 | 4834.7 | 0 |
| Jun | 0 | 0 | 415.6 | 0 | 42.5 | 0 |
| Jul | 0 | 0 | 165.6 | 0 | 0.7 | 0 |
| Aug | 0 | 0 | 47.8 | 0.5 | 0 | 0.1 |
| Sep | 0 | 0 | 5.7 | 0 | 0 | 0 |
| Oct | 0 | 0 | 0.9 | 0 | 0 | 0 |
| Nov | 0 | 0 | 0 | 0.1 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
(32 km)