Hourly Weather Forecast for Wilmington, Delaware

Hourly Weather | Today › Thursday, June 11, 2026

Active Weather Warnings

Heat Advisory

Wilmington, Delaware

1 PM

90°

Feels Like 102°

Humidity: 57%

UV Index: 11

Wind: 10 mph

2 PM

91°

Feels Like 102°

Humidity: 53%

UV Index: 9

Wind: 10 mph

3 PM

93°

Feels Like 102°

Humidity: 50%

UV Index: 7

Wind: 10 mph

4 PM

93°

Feels Like 100°

Humidity: 47%

UV Index: 4

Wind: 10 mph

5 PM

93°

Feels Like 99°

Humidity: 48%

UV Index: 3

Wind: 10 mph

6 PM

91°

Feels Like 97°

Humidity: 52%

UV Index: 2

Wind: 9 mph

7 PM

86°

Feels Like 91°

Humidity: 74%

UV Index: 0

Wind: 8 mph

8 PM

84°

Feels Like 90°

Humidity: 70%

UV Index: 0

Wind: 6 mph

9 PM

82°

Feels Like 90°

Humidity: 73%

UV Index: 0

Wind: 6 mph

10 PM

81°

Feels Like 84°

Humidity: 78%

UV Index: 0

Wind: 6 mph

11 PM

79°

Feels Like 79°

Humidity: 81%

UV Index: 0

Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

1 PM

37 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 8.77 µg/m³
PM₁₀: 9.95 µg/m³
O₃: 0.035 ppm
NO₂: 1.1 ppb
SO₂: 0.6 ppb
CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

2 PM

36 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 8.55 µg/m³
PM₁₀: 9.86 µg/m³
O₃: 0.032 ppm
NO₂: 1.2 ppb
SO₂: 0.6 ppb
CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

3 PM

33 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 7.89 µg/m³
PM₁₀: 9.28 µg/m³
O₃: 0.030 ppm
NO₂: 1.4 ppb
SO₂: 0.6 ppb
CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

4 PM

28 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 6.73 µg/m³
PM₁₀: 8.07 µg/m³
O₃: 0.029 ppm
NO₂: 1.7 ppb
SO₂: 0.5 ppb
CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

5 PM

26 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.26 µg/m³
PM₁₀: 6.43 µg/m³
O₃: 0.028 ppm
NO₂: 1.9 ppb
SO₂: 0.5 ppb
CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 PM

24 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.11 µg/m³
PM₁₀: 5.18 µg/m³
O₃: 0.026 ppm
NO₂: 2.2 ppb
SO₂: 0.4 ppb
CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM

20 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.66 µg/m³
PM₁₀: 4.92 µg/m³
O₃: 0.022 ppm
NO₂: 2.9 ppb
SO₂: 0.4 ppb
CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM

18 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.56 µg/m³
PM₁₀: 5.06 µg/m³
O₃: 0.019 ppm
NO₂: 4 ppb
SO₂: 0.4 ppb
CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM

16 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 3.73 µg/m³
PM₁₀: 5.51 µg/m³
O₃: 0.017 ppm
NO₂: 5.1 ppb
SO₂: 0.4 ppb
CO: 0.15 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM

16 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 3.89 µg/m³
PM₁₀: 5.92 µg/m³
O₃: 0.015 ppm
NO₂: 5.8 ppb
SO₂: 0.4 ppb
CO: 0.16 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM

16 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 3.84 µg/m³
PM₁₀: 6.01 µg/m³
O₃: 0.013 ppm
NO₂: 6.1 ppb
SO₂: 0.4 ppb
CO: 0.16 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Wilmington

Moderate Expected Likely

Heat Advisory

Heat Advisory issued June 11 at 2:51AM EDT until June 12 at 8:00PM EDT by NWS Mount Holly NJ

Jun 11, 11:00 AM → Jun 12, 8:00 PM

WHAT: Heat index values up to 104 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 11 AM this morning to 8 PM EDT Friday.

IMPACTS: Hot temperatures and high humidity may cause heat
illnesses.

ADDITIONAL DETAILS: Some showers and thunderstorms late this
afternoon and again late Friday afternoon will provide some local
relief from the heat, however it will still remain very humid. It
will then turn much less humid this weekend in the wake of a cold
front.

+ Read More

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. If you do not have air conditioning in your home or lack shelter, you can call 211, or visit your county or state health department website for assistance locating appropriate shelter from the heat.

Updated: Jun 11, 10:44 AM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Weather Alerts and Warnings for Wilmington

Heat Advisory

Explore U.S. Weather Trends