The main allergy season in Almaty has come to an end. According to data from Almaty Air Initiative’s AI-powered allergen sensor, the only one of its kind in Central Asia, pollen levels peaked in late September, when wormwood became the dominant allergen.

The foundation’s experts analyzed data collected by the PollenSense sensor in August and September. Here is how the season unfolded:

August. Pollen from the amaranth family (including lamb’s quarters, orache, and amaranth) dominated the air. It was the most prevalent pollen type on 18 out of 31 days, with no sharp spikes but almost no breaks either.

Late August – early September. Ragweed pollen appeared. Its concentration increased approximately fivefold over the course of August. The main peak occurred on August 26–27, followed by a second wave on September 6–10.

Last ten days of September. Wormwood pollen dominated. Its concentration rose sharply starting September 21. On September 25, the sensor recorded the highest pollen levels of the two-month period. Notably, wormwood pollen remained in the air not only during the day but also at night.

There was no increase in total pollen levels in autumn — only a change in composition.

The total amount of pollen was nearly identical in August and September. However, the combined share of ragweed and wormwood, two of the strongest late-summer allergens, almost doubled: from 22% in August to 42% in September.

Why allergy symptoms felt more severe.

The season was marked by early warmth, followed by a hot and extremely dry summer. Under these conditions, pollen remains airborne for longer. Construction and road dust may have caused additional irritation, as extensive street reconstruction projects resulted in noticeably higher dust levels this year.

How the data was collected.

Almaty Air Initiative uses PollenSense, the only AI-powered allergen sensor in Central Asia. It identifies pollen, mold spores, dust, and microplastics in real time. The sensor is installed in the area bounded by Satpayev, Baitursynov, Timiryazev, and Seifullin streets.

Up-to-date information on airborne allergens in Almaty is available to all users of the Taza Air app and on the foundation’s public dashboard: dashboard.air.org.kz

Supported by Halyk Bank

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