Weather forecast and conditions for Herndon, 20170, Virginia, United States - The Weather Channel | weather.com
Herndon Weather
Location
Herndon, 20170, Virginia, United States
As of 21:11 GMT-4
Now: 79° — Cloudy
Feels Like: 77°
High: 85°
Low: 69°
Chance of Rain: 5%
Today's outlook
Tonight's low temperature will be nearly the same as last night's.
Hourly Forecast
| Time | Condition | Temperature |
|---|---|---|
| 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 | - |
| 22:00 | Partly Cloudy Night | 76° |
| 23:00 | Partly Cloudy Night | 75° |
| 0:00 | Partly Cloudy Night | 74° |
| 1:00 | Partly Cloudy Night | 72° |
| 2:00 | Partly Cloudy Night | 72° |
| 3:00 | Partly Cloudy Night | 71° |
| 4:00 | Partly Cloudy Night | 70° |
| 5:00 | Partly Cloudy Night | 70° |
| 6:00 | Partly Cloudy Night | 70° |
| 7:00 | Partly Cloudy Day | 70° |
Wind
Wind: 4 mph N
Humidity
Humidity: 81%
Air Quality
Air Quality Index: 63 - Moderate
Dew Point: 71°
Pressure: 30.04 in
UV Index: 0 of 11
Visibility: 10 mi
Moon Phase: Waxing Crescent
Daily Forecast
| Date | Condition | Rain Chance | Low | High |
|---|---|---|---|---|
| Tonight | Scattered Showers Night | 39% | 69° | 85° |
| Sat 15 | Partly Cloudy Day | 7% | 73° | 87° |
| Sun 16 | Thunderstorms | 89% | 74° | 81° |
| Mon 17 | Partly Cloudy Day | 15% | 68° | 90° |
| Tue 18 | Mostly Clear Day | 5% | 65° | 85° |
| Wed 19 | Mostly Clear Day | 7% | 72° | 88° |
| Thu 20 | Scattered Thunderstorms | 50% | 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 pollen is moderate in your area. Flu risk is very low in your area.