Today | Weather | Sunday, December 14, 2025

Active Weather Warnings

Winter Weather Advisory

Weather in Allentown, Pennsylvania

08:21 AM

Now

27° F

Feels Like 16°

Precipitation 40 %

Wind 12 mph

UV Index (0 - 11+) 0

Humidity 88 %

Today

Day 28°

Night 12°

Precipitation 40 %

Wind 14 mph

UV Index (0 - 11+) 1

Allentown Weather Forecast Updated

Last updated on December 14, 2025 at 6:49 AM

Weather Forecast History

Last Year's Weather on This Day (December 14, 2024)

Day

36°

Night

19°

Wind

4 mph

Precipitation

0 %

Air Quality in Allentown

NOW

27 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 0.91 µg/m³

PM₁₀ 1.32 µg/m³

O₃ 0.029 ppm

NO₂ 3.1 ppb

SO₂ 0.5 ppb

CO 0.15 ppm

NH₃ 0.68 µg/m³

NO 0.01 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 – 0.91 µg/m³

PM₁₀ – 1.32 µg/m³

O₃ – 56.86 µg/m³

NO₂ – 5.81 µg/m³

SO₂ – 1.18 µg/m³

CO – 176.71 µg/m³

NH₃ – 0.68 µg/m³

NO – 0.01 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Allentown

Moderate Expected Likely

Winter Weather Advisory

Winter Weather Advisory issued December 14 at 6:06AM EST until December 14 at 10:00AM EST by NWS Mount Holly NJ

Dec 14, 6:06 AM → Dec 14, 10:00 AM

WHAT: Snow. Total snow accumulations between 3 and 6 inches.

WHERE: Portions of northern New Jersey and east central
Pennsylvania.

WHEN: Until 10 AM EST this morning.

IMPACTS: Plan on slippery road conditions. Areas of blowing snow
could significantly reduce visibility.

+ Read More

Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.

Updated: Dec 14, 6:49 AM Source: NWS Alert