Which pollen is in the air in Houston right now?

In August, the species typically in season in Houston are Ragweed, Grass, Elm. This is the seasonal expectation for the Southwest, not a measurement for today.

When is pollen season in Houston?

Ragweed peaks in September. Grass peaks in April, May, June and July. Oak peaks in March and April. Maple peaks in March. Juniper / Cedar peaks in January and December. Elm peaks in February, March, September and October. Ash peaks in March. Cottonwood peaks in March. Pine peaks in March and April.

Which pollen species are reported in Houston?

9 of the eleven species Respira reports in the United States occur around Houston: Ragweed, Grass, Oak, Maple, Juniper / Cedar, Elm, Ash, Cottonwood, Pine. Houston sits in the Southwest, which is what decides which species occur and when.

Where does the pollen data for Houston come from?

The month-by-month calendar on this page is a seasonal estimate for the Southwest. For measured daily levels, the Respira app uses the Google Pollen API across the United States, and reports no reading rather than a zero when a species has no data.

Pollen in Houston, Texas

Humidity keeps mold in play year round alongside the pollen, and the grass season is one of the longest in the country.

Houston sits in the Southwest, which is what decides the shape of its pollen year. 9 of the eleven species Respira reports in the United States occur here.

In season in Houston right now

As of August, these are the species expected to be in the air in Houston:

This is the seasonal expectation for the Southwest, not a measurement. The app reports the level measured for your own location each day, and says so when there is no reading rather than showing a zero.

Pollen calendar for Houston

Month by month intensity for every species that occurs in the Southwest. Darker means higher. The current month is marked.

Pollen calendar: intensity by month and species
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Ragweed	Jan: none	Feb: none	Mar: none	Apr: none	May: none	Jun: none	Jul: none	Aug: moderate	Sep: high	Oct: moderate	Nov: none	Dec: none
Grass	Jan: low	Feb: low	Mar: moderate	Apr: high	May: high	Jun: high	Jul: high	Aug: moderate	Sep: moderate	Oct: low	Nov: low	Dec: low
Oak	Jan: none	Feb: low	Mar: high	Apr: high	May: moderate	Jun: none	Jul: none	Aug: none	Sep: none	Oct: none	Nov: none	Dec: none
Maple	Jan: none	Feb: moderate	Mar: high	Apr: moderate	May: low	Jun: none	Jul: none	Aug: none	Sep: none	Oct: none	Nov: none	Dec: none
Juniper / Cedar	Jan: very high	Feb: high	Mar: low	Apr: none	May: none	Jun: none	Jul: none	Aug: none	Sep: none	Oct: none	Nov: low	Dec: very high
Elm	Jan: low	Feb: moderate	Mar: moderate	Apr: low	May: none	Jun: none	Jul: none	Aug: low	Sep: moderate	Oct: moderate	Nov: none	Dec: low
Ash	Jan: none	Feb: moderate	Mar: high	Apr: moderate	May: none	Jun: none	Jul: none	Aug: none	Sep: none	Oct: none	Nov: none	Dec: none
Cottonwood	Jan: none	Feb: high	Mar: very high	Apr: moderate	May: none	Jun: none	Jul: none	Aug: none	Sep: none	Oct: none	Nov: none	Dec: none
Pine	Jan: none	Feb: low	Mar: moderate	Apr: moderate	May: low	Jun: none	Jul: none	Aug: none	Sep: none	Oct: none	Nov: none	Dec: none

Seasonal estimate by climate zone, not a measurement. Seasons shift with elevation and with the year's weather.

What grows around Houston

Ragweed: Peaks in September.
Grass: Peaks in April, May, June and July.
Oak: Peaks in March and April.
Maple: Peaks in March.
Juniper / Cedar: Peaks in January and December.
Elm: Peaks in February, March, September and October.
Ash: Peaks in March.
Cottonwood: Peaks in March.
Pine: Peaks in March and April.

Track today's levels in Houston

This page is the shape of the year. For today's actual numbers, Respira reports the eleven US species for wherever you are, air quality on the EPA scale, and a symptom diary you can export as a PDF for your allergist.

Nearby cities

All cities

Respira is an informational tool. It does not replace diagnosis or advice from a medical professional.