Worst air pollution Alpharetta, today and tomorrow
Today (16 July): Air quality in Alpharetta is fair. AQI, PM10, and O3 are fair; PM2.5, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 29.9/100).
Tomorrow (17 July 2026): Air quality in Alpharetta is fair. PM10 decreases to good; all other pollutants stay as today. Pollution peaks around 1:00 PM (O3: 29.0/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Alpharetta's air quality benefits from the flat Georgia Piedmont providing generally good wind dispersal, with vehicle emissions from SR-400 and the surrounding technology and corporate campus corridor — including major Fortune 500 operations — contributing local sources. The Chattahoochee River corridor provides natural ventilation, while the broader Atlanta metropolitan ozone challenge from the vast highway network is the primary warm-season concern throughout the summer ozone season.
Today - 16 July | Pollution peaks at 12:00
AQI:
Fair
29.9/100
PM2.5 (fine particles):
Good
15.4/100
PM10 (coarse particles):
Fair
26.1/100
NO2 (nitrogen dioxide):
Good
1.2/100
O3 (ozone):
Fair
29.9/100
SO2 (sulfur dioxide):
Good
1.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.0/100
PM1 (ultrafine particles):
Good
3.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Fair
29.0/100
PM2.5 (fine particles):
Good
11.2/100
PM10 (coarse particles):
Good
18.5/100
NO2 (nitrogen dioxide):
Good
0.5/100
O3 (ozone):
Fair
29.0/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.1/100
PM1 (ultrafine particles):
Good
2.1/100
Pollen forecast in Alpharetta
View pollen forecastSports venues in Alpharetta
Frequently Asked Questions
Is air quality bad in Alpharetta right now?
On 16 July 2026, overall air quality in Alpharetta is fair. AQI is the main air quality indicator at 29.9/100. Pollution peaks around 12:00 PM (O3: 29.9/100).
Will air quality be worse tomorrow in Alpharetta?
On 17 July 2026, air quality conditions in Alpharetta will be similar to today, with AQI forecast at fair at 29.0/100. Pollution peaks around 1:00 PM (O3: 29.0/100).
When is air pollution at its worst in Alpharetta?
Conditions in Alpharetta vary noticeably across the seasons — the cleanest conditions usually arrive in winter, once the humid summer ozone season has ended, whereas summer heat, humidity, and emissions from surrounding forests combine to drive ozone levels up. Prescribed burns are more common in the cooler months and can add brief smoke episodes.
Are air quality levels in Alpharetta 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.
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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