Herndon Weather

Location

Herndon, 20170, Virginia, United States

·

As of 21:11 GMT-4

Now 79° 78° 77°

Cloudy

Cloudy

Feels Like

77°

HHigh

85°

LLow

69°

Chance of Rain

5%

0 in

Today's outlook

Tonight's low temperature will be nearly the same as last night's.

Hourly Forecast

• 0:00: Cloudy, 77°
• 1:00: Mostly Cloudy Night, 77°
• 2:00: Mostly Cloudy Night, 76°
• 3:00: Mostly Cloudy Night, 76°
• 4:00: Mostly Cloudy Night, 77°
• 5:00: Mostly Cloudy Night, 76°
• 6:00: Mostly Cloudy Night, 75°
• 6:21: Sunrise
• 7:00: Cloudy, 74°
• 8:00: Partly Cloudy Day, 76°
• 9:00: Mostly Cloudy Day, 77°
• 10:00: Mostly Cloudy Day, 77°
• 11:00: Cloudy, 79°
• 12:00: Cloudy, 78°
• 13:00: Cloudy, 77°
• 14:00: Mostly Cloudy Day, 76°
• 15:00: Mostly Cloudy Day, 78°
• 16:00: Partly Cloudy Day, 82°
• 17:00: Mostly Cloudy Day, 82°
• 18:00: Mostly Cloudy Day, 82°
• 19:00: Mostly Cloudy Day, 80°
• 20:00: Cloudy, 78°
• 20:05: Sunset

Wind

Wind: 4 mph N

Humidity

Humidity: 81%

Air Quality

Air Quality Index: 63 - Moderate

Dew Point

Dew Point: 71°

Pressure

Pressure: 30.04 in

UV Index

UV Index: 0 of 11

Visibility

Visibility: 10 mi

Moon Phase

Moon Phase: Waxing Crescent

Sunrise and Sunset

• Sunrise: 6:21
• Sunset: 20:05

Daily Forecast

• Tonight: Scattered Showers Night 39%, Showers Early, 69° / 85°
• Sat 15: Partly Cloudy Day 7%, Partly Cloudy, 73° / 87°
• Sun 16: Thunderstorms 89%, T-Storms, 74° / 81°
• Mon 17: Partly Cloudy Day 15%, Partly Cloudy, 68° / 90°
• Tue 18: Mostly Clear Day 5%, Mostly Sunny, 65° / 85°
• Wed 19: Mostly Clear Day 7%, Mostly Sunny, 72° / 88°
• Thu 20: Scattered Thunderstorms 50%, PM T-Storms, 65° / 87°

Air Quality Index

63

Moderate

Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Health & Activities

• Grass: Seasonal Allergies and Pollen Count Forecast, Grass pollen is moderate in your area.
• Flu: Cold & Flu Forecast, Flu risk is very low in your area.