Today | Weather | Wednesday, March 18, 2026

Active Weather Warnings

Freeze Warning

Weather in Johns Creek, Georgia

07:23 AM

Now

34° F

Feels Like 34°

Precipitation 0 %

Wind 4 mph

Humidity 58 %

Today

Day 54°

Night 34°

Precipitation 1 %

Wind 4 mph

UV Index (0 - 11+) 6

Johns Creek Weather Forecast Updated

6 minutes ago

Last updated on March 18, 2026 at 7:17 AM

Air Quality in Johns Creek

NOW

31 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 5.72 µg/m³

PM₁₀ 11.39 µg/m³

O₃ 0.034 ppm

NO₂ 3.3 ppb

SO₂ 0.4 ppb

CO 0.16 ppm

NH₃ 3.35 µg/m³

NO 0 µg/m³

PM_2.5 – 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)

PM_2.5 – 5.72 µg/m³

PM₁₀ – 11.39 µg/m³

O₃ – 66.67 µg/m³

NO₂ – 6.15 µg/m³

SO₂ – 1.02 µg/m³

CO – 178.32 µg/m³

NH₃ – 3.35 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Johns Creek

Moderate Expected Likely

Freeze Warning

Freeze Warning issued March 17 at 8:57PM EDT until March 18 at 10:00AM EDT by NWS Peachtree City GA

Mar 17, 11:00 PM → Mar 18, 10:00 AM

WHAT: Sub-freezing temperatures as low as 22 expected.

WHERE: Portions of central, east central, north central,
northeast, northwest, southeast, and west central Georgia.

WHEN: Until 10 AM EDT Wednesday.

IMPACTS: Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.

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Take steps now to protect tender plants from the cold. To prevent water pipes from freezing; wrap or drain or allow them to drip slowly.

Updated: Mar 18, 7:17 AM Source: NWS Alert