Pollen Count in Hârlău
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Values in gr/m³ (pollen grains per cubic metre).
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In Hârlău, spring pollen starts as the weather warms, usually from March through May. Trees release much of it. Hazel and alder may bloom early, followed by birch, oak, and ash. Their pollen can affect people with allergies.
In summer, grass pollen is common in Hârlău from May to July. Meadow grasses and lawn grasses release tiny grains that travel through the air. Dry, windy days can spread them farther and affect people with allergies.
In late summer and autumn, weed pollen becomes more common, usually from August into October. Ragweed is an important source in Romania. Mugwort and nettles may also release pollen. Ragweed pollen can affect people with allergies.
In winter, outdoor pollen levels are usually low because most plants are not flowering. Cold weather slows pollen release. On warmer days near the end of winter, some hazel or alder trees may begin to bloom early.
Updated: 27 Oct 2026.
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 Hârlău 🌾. 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 | 702.8 | 0 | 0 | 0 | 0 | 0 |
| Feb | 148.2 | 0 | 0 | 0 | 0 | 0 |
| Mar | 8078.1 | 787.2 | 7.3 | 0 | 0 | 0 |
| Apr | 3.3 | 1088.9 | 28.7 | 0 | 0 | 0 |
| May | 0.1 | 116.7 | 94.8 | 0 | 1 | 0 |
| Jun | 0 | 10.7 | 534.2 | 0 | 3.1 | 0 |
| Jul | 0 | 0.1 | 286.8 | 188.6 | 0.1 | 3.5 |
| Aug | 0 | 0 | 130.6 | 512.4 | 0 | 1824.1 |
| Sep | 0 | 0 | 39.9 | 286.5 | 0 | 2031.3 |
| Oct | 0 | 0 | 5.8 | 2.9 | 0 | 0.4 |
| Nov | 0 | 0 | 0.5 | 0 | 0 | 0 |
| Dec | 0 | 0 | 0 | 0 | 0 | 0 |
Values in gr/m³ (pollen grains per cubic metre).
(39 km)