Today | Weather | Monday, October 12, 2026

Weather in Alpharetta, Georgia

09:09 PM
Now
Night
70° F
Feels Like 68°
Precipitation 0 %
Wind 5 mph
Humidity 83 %
Today
Night
Day 84°
Night 54°
Precipitation 0 %
Wind 5 mph

Alpharetta Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 12, 2025)
Sunny Weather

Day

79°

Night

50°

Wind

6 mph

UV Index

50

Precipitation

0 %

Air Quality in Alpharetta

NOW
57 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 15.5 µg/m³
PM10 18.52 µg/m³
O3 0.023 ppm
NO2 3.6 ppb
SO2 0.1 ppb
CO 0.14 ppm
NH3 2.96 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.5 – 15.5 µg/m³
PM10 – 18.52 µg/m³
O3 – 45.93 µg/m³
NO2 – 6.81 µg/m³
SO2 – 0.36 µg/m³
CO – 165.05 µg/m³
NH3 – 2.96 µg/m³
NO – 0 µg/m³