# Herndon Weather

## Location
Herndon, 20170, Virginia, United States

As of 21:22 GMT-4

### Current Weather
- **Temperature**: 79°
- **Feels Like**: 77°
- **High**: 83°
- **Low**: 68°
- **Chance of Rain**: 7%

## Today's Outlook
Tonight's low temperature will be a little cooler than 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°         |
| 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°         |
| 21:00 | Cloudy               | 77°         |

### Weather Details
- **Wind**: 4 mph N
- **Humidity**: 81%
- **Air Quality Index**: 61 - Moderate
- **Dew Point**: 71°
- **Pressure**: 30.05 in
- **UV Index**: 0 of 11
- **Visibility**: 10 mi
- **Moon Phase**: Waxing Crescent
- **Sunrise**: 6:21
- **Sunset**: 20:05

## Daily Forecast
| Date     | Condition                | Chance of Rain | High | Low |
|----------|--------------------------|-----------------|------|-----|
| Tonight  | Partly Cloudy Night      | 8%              | 68°  | 68° |
| Sat 15   | Mostly Clear Day         | 7%              | 73°  | 87° |
| Sun 16   | Thunderstorms            | 81%             | 73°  | 78° |
| Mon 17   | Partly Cloudy Day        | 23%             | 68°  | 89° |
| Tue 18   | Mostly Clear Day         | 5%              | 65°  | 85° |
| Wed 19   | Mostly Clear Day         | 7%              | 71°  | 88° |
| Thu 20   | Scattered Thunderstorms   | 52%             | 66°  | 87° |

## Air Quality Index
The 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**: Moderate in your area
- **Flu Risk**: Very low in your area