Today | Weather | Wednesday, August 12, 2026

Weather in Marietta, Georgia

07:49 AM
Now
Cloudy Weather
70° F
Feels Like 75°
Precipitation 34 %
Wind 7 mph
UV Index (0 - 11+) 2
Humidity 100 %
Today
Sunny with a Chance of Thunderstorms
Day 90°
Night 70°
Precipitation 55 %
Wind 8 mph
UV Index (0 - 11+) 9

Warning: High UV Index Today: 9

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Marietta Weather Forecast Updated

Last updated on

Air Quality in Marietta

NOW
12 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 2.94 µg/m³
PM10 4.19 µg/m³
O3 0.011 ppm
NO2 1.3 ppb
SO2 0.2 ppb
CO 0.09 ppm
NH3 0.78 µg/m³
NO 0.04 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 considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.52.94 µg/m³
PM104.19 µg/m³
O320.94 µg/m³
NO22.54 µg/m³
SO20.61 µg/m³
CO103.67 µg/m³
NH30.78 µg/m³
NO0.04 µg/m³