Worst air pollution Round Rock, today and tomorrow
Today (16 July): Air quality in Round Rock is fair. AQI, PM10, and O3 are fair; PM2.5, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 AM (O3: 29.0/100).
Tomorrow (17 July 2026): Air quality in Round Rock is fair. PM10 decreases to good; all other pollutants stay as today. Pollution peaks around 10:00 AM (O3: 27.4/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Round Rock's air quality reflects the flat Central Texas Blackland Prairie, with vehicle emissions from I-35 and the Dell Technologies campus contributing local sources in this major Austin suburb. Summer ozone from Austin metropolitan traffic and intense Texas heat is the primary warm-season concern, while prevailing southerly Gulf breezes generally maintain moderate conditions.
Today - 16 July | Pollution peaks at 11:00
AQI:
Fair
29.0/100
PM2.5 (fine particles):
Good
14.4/100
PM10 (coarse particles):
Fair
20.6/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
29.0/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.7/100
PM1 (ultrafine particles):
Good
3.3/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 10:00
AQI:
Fair
27.4/100
PM2.5 (fine particles):
Good
12.4/100
PM10 (coarse particles):
Good
12.5/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
27.4/100
SO2 (sulfur dioxide):
Good
1.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.7/100
PM1 (ultrafine particles):
Good
3.0/100
Pollen forecast in Round Rock
View pollen forecastFrequently Asked Questions
Is air quality bad in Round Rock right now?
On 16 July 2026, overall air quality in Round Rock is fair. AQI is the main air quality indicator at 29.0/100. Pollution peaks around 11:00 AM (O3: 29.0/100).
Will air quality be worse tomorrow in Round Rock?
On 17 July 2026, air quality conditions in Round Rock will be similar to today, with AQI forecast at fair at 27.4/100. Pollution peaks around 10:00 AM (O3: 27.4/100).
When is air pollution at its worst in Round Rock?
Round Rock experiences a distinct seasonal swing in air quality, as the mildest, cleanest stretch typically falls in spring or autumn; by contrast, intense summer heat drives persistent ozone problems, particularly in and around the largest metro areas. Gulf Coast humidity and inland heat can each add their own seasonal pollution patterns.
Are air quality levels in Round Rock based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Want to see air quality forecasts for other cities in United States?
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app