Hourly Weather Forecast for Herndon, 20170, Virginia, United States - The Weather Channel | Weather.com
Hourly weather
Location: Herndon, 20170, Virginia, United States · as of 9:07 pm GMT-4
Tomorrow's maximum UV index will be a little higher than today's
Friday, 14 August
| Time | Temperature | Condition | Rain Drop | Humidity | Wind | Pressure | Cloud Cover | Dew Point | UV Index | Visibility | Air Quality | Wind Gust |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 21:15 | 77° | Mostly Cloudy Night | 2% | 82% | 4mph | 30.1 | 59% | 71° | 0 of 11 | 10 mi | 64 - Moderate | - |
| 21:30 | 76° | Mostly Cloudy Night | 2% | 84% | 4mph | |||||||
| 21:45 | 76° | Mostly Cloudy Night | 9% | 84% | 4mph | |||||||
| 22:00 | 76° | Partly Cloudy Night | 8% | 86% | 4mph | |||||||
| 22:15 | 75° | Partly Cloudy Night | 5% | 87% | 4mph | |||||||
| 23:00 | 74° | Partly Cloudy Night | 2% | 89% | 4mph |
Saturday, 15 August
| Time | Temperature | Condition | Rain Drop | Humidity | Wind | Pressure | Cloud Cover | Dew Point | UV Index | Visibility | Air Quality | Wind Gust |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0:00 | 74° | Partly Cloudy Night | 3% | 91% | 4mph | |||||||
| 1:00 | 73° | Partly Cloudy Night | 3% | 94% | 3mph | |||||||
| 2:00 | 72° | Partly Cloudy Night | 3% | 97% | 3mph | |||||||
| 3:00 | 72° | Partly Cloudy Night | 3% | 97% | 3mph | |||||||
| 4:00 | 71° | Partly Cloudy Night | 5% | 97% | 4mph | |||||||
| 5:00 | 70° | Partly Cloudy Night | 8% | 95% | 4mph |
Sunday, 16 August
| Time | Temperature | Condition | Rain Drop | Humidity | Wind | Pressure | Cloud Cover | Dew Point | UV Index | Visibility | Air Quality | Wind Gust |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0:00 | 76° | Cloudy | 9% | 80% | 4mph | |||||||
| 1:00 | 75° | Cloudy | 9% | 83% | 4mph | |||||||
| 2:00 | 75° | Mostly Cloudy Night | 12% | 84% | 5mph | |||||||
| 3:00 | 75° | Mostly Cloudy Night | 9% | 88% | 5mph |
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.