Today | Weather | Tuesday, September 1, 2026
Active Weather Warnings

Weather in Middletown, Delaware

06:18 AM
Now
Cloudy Night
73° F
Feels Like 77°
Precipitation 32 %
Wind 4 mph
Humidity 94 %
Today
Sunny with a Chance of Thunderstorms
Day 91°
Night 72°
Precipitation 55 %
Wind 8 mph
UV Index (0 - 11+) 7

Middletown Weather Forecast Updated

54 minutes ago
Last updated on

Air Quality in Middletown

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

Pollutant Concentrations:

PM2.5 6.82 µg/m³
PM10 7.97 µg/m³
O3 0.020 ppm
NO2 1.7 ppb
SO2 0.4 ppb
CO 0.13 ppm
NH3 0.74 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 considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.56.82 µg/m³
PM107.97 µg/m³
O338.46 µg/m³
NO23.27 µg/m³
SO20.95 µg/m³
CO145.29 µg/m³
NH30.74 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Middletown

Moderate Expected Likely

Heat Advisory

Heat Advisory issued September 1 at 2:30AM EDT until September 1 at 8:00PM EDT by NWS Mount Holly NJ
Sep 1, 12:00 PM Sep 1, 8:00 PM
WHAT: Heat index values up to 100 degrees expected.

WHERE: In Delaware, New Castle County. In New Jersey, Mercer,
Camden, Gloucester, and Northwestern Burlington Counties. In
Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower
Bucks, and Philadelphia Counties.

WHEN: From noon today to 8 PM EDT this evening.

IMPACTS: Hot temperatures and high humidity may cause heat
illnesses.
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Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.
Updated: Sep 1, 5:23 AM Source: NWS Alert