Today | Weather | Thursday, July 16, 2026

Active Weather Warnings

Air Quality Alert

Weather in Allentown, Pennsylvania

02:41 AM

Now

73° F

Feels Like 73°

Precipitation 0 %

Wind 4 mph

Humidity 74 %

Today

Day 93°

Night 66°

Precipitation 0 %

Wind 14 mph

UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

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.

Allentown Weather Forecast Updated

44 minutes ago

Last updated on July 16, 2026 at 1:57 AM

Weather Forecast History

Last Year's Weather on This Day (July 16, 2025)

Day

91°

Night

73°

Wind

4 mph

UV Index

Precipitation

49 %

Air Quality in Allentown

NOW

34 AQI

Good air quality Dominant pollutant: PM_2.5

Pollutant Concentrations:

PM_2.5 8.15 µg/m³

PM₁₀ 10.08 µg/m³

O₃ 0.018 ppm

NO₂ 3.3 ppb

SO₂ 0.4 ppb

CO 0.12 ppm

NH₃ 5.91 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 – 8.15 µg/m³

PM₁₀ – 10.08 µg/m³

O₃ – 36.05 µg/m³

NO₂ – 6.26 µg/m³

SO₂ – 0.98 µg/m³

CO – 135.82 µg/m³

NH₃ – 5.91 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Allentown

Air Quality Alert

Air Quality Alert issued July 15 at 4:10PM EDT by NWS Mount Holly NJ

Jul 15, 4:10 PM → Jul 16, 4:15 PM

The Pennsylvania Department of Environmental Protection has issued a
Code Red Air Quality Action Day for Fine Particulates, from midnight
tonight to midnight EDT Thursday night.

An Air Quality Action Day means that air quality within the region
may approach or exceed unhealthy standards. For more information on
current and forecast concentrations of ground-level ozone and fine
particulates, visit www.airnow.gov or www.aqpartners.state.pa.us

Updated: Jul 16, 1:57 AM Source: NWS Alert