There is a weather that never makes the forecast — the slow, invisible season that settles inside every home. This is its record.
Central Texas keeps two calendars. One hangs on the wall. The other drifts in the air — six pollens and one mold, each ruling its own weeks, circling the year without pause.
Trace an orbit · tap to read its season
Each season of the invisible year, named — with what the science says, and what it feels like to live beneath it.
In the coldest weeks, the hills exhale. The junipers smoke against a blue sky, and the whole city breathes them in.
There are roughly twelve Ashe junipers for every person in Austin — about a third of the tree canopy. A single tree can release up to a billion grains of pollen, enough that the trees appear to smoke when the cold fronts come. Counts climb into the thousands; anything above 3,201 is logged as "very high." It overwhelms even people who have never had an allergy in their lives, which is why they call it a fever.
Spring signs its name in yellow. You find it on the hood of the car, along the windowsill, in the far corner of a room no one opened.
When cedar finally relents, the oaks answer. Their pollen is the visible one — a fine yellow powder that coats cars, sidewalks, and backyard grills, and finds its way indoors on every shoe and sleeve. Warm, dry, windy afternoons are its favorite weather, and the season's worst.
The state tree keeps a lower voice — a late spring murmur beneath the oak's shout, easy to miss until it isn't.
Texas's own pecan, along with elm and ash, carries the tail of the spring tree season into May. Lighter than cedar or oak, but persistent — the reason a home can feel "cleaned" and still carry a fine grit on the sills a week later.
All summer it rises off the lawns in a haze too fine to see — indistinguishable, the labs say, even under the microscope.
Through the long Central Texas summer, grass pollen holds the middle of the year. Under magnification the grains are nearly impossible to tell apart — a single anonymous drift that rides open windows and doorways from May clear through September.
It grows taller than a person along the fence lines and the roadsides, and sends its billion travelers out on the first cool wind of fall.
A single ragweed plant can loose up to a billion pollen grains in one season, and each one is built to travel — light enough to carry for miles. You need not have a single plant in your yard to bring it home. It peaks in October, just as the first fronts open the windows again.
While the pollens take their turns, this one keeps no calendar at all. It waits in the damp, patient, year-round.
Beneath the six pollen reigns runs a seventh presence that observes no season — mold, thriving wherever Central Texas humidity meets a still, dark corner. It is the reason the invisible year has no true off-season, and the quiet argument for care that never fully stops.
The Dust Almanac is our way of naming what every Central Texas home quietly fights. Understanding the invisible year is the first half of the work. Keeping it where it belongs — outside — is the other.
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