# Herndon Weather

## Location
Herndon, 20170, Virginia, United States

·

As of 9:22 pm 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 |
|--------|---------------------|-------------|
| 00:00  | Cloudy              | 77°         |
| 01:00  | Mostly Cloudy Night  | 77°         |
| 02:00  | Mostly Cloudy Night  | 76°         |
| 03:00  | Mostly Cloudy Night  | 76°         |
| 04:00  | Mostly Cloudy Night  | 77°         |
| 05:00  | Mostly Cloudy Night  | 76°         |
| 06:00  | Mostly Cloudy Night  | 75°         |
| 07:00  | Cloudy              | 74°         |
| 08:00  | Partly Cloudy Day   | 76°         |
| 09:00  | 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°         |

### Wind
- **Speed:** 4 mph N

### Humidity
- **Humidity:** 81%

### Air Quality
- **Index:** 63 - Moderate

### Dew Point
- **Dew Point:** 71°

### Pressure
- **Pressure:** 30.05 in

### UV Index
- **UV Index:** 0 of 11

### Visibility
- **Visibility:** 10 mi

### Moon Phase
- **Phase:** Waxing Crescent
- **Sunrise:** 06:21
- **Sunset:** 20:05

# Daily Forecast
| Date      | Condition        | Rain Chance | Low | High |
|-----------|------------------|-------------|-----|------|
| Tonight   | Partly Cloudy    | 8%          | 68° | 83°  |
| Sat 15    | Mostly Clear      | 7%          | 73° | 87°  |
| Sun 16    | Thunderstorms     | 81%         | 73° | 78°  |
| Mon 17    | Partly Cloudy     | 23%         | 68° | 89°  |
| Tue 18    | Mostly Clear      | 5%          | 65° | 85°  |
| Wed 19    | Mostly Clear      | 7%          | 71° | 88°  |
| Thu 20    | Scattered Thunderstorms| 52%    | 66° | 87°  |

## Air Quality Index
- **Index:** 63
- **Health Consideration:** 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.