# Herndon Weather

**Location**  
Herndon, 20170, Virginia, United States  
As of 9:11 pm GMT-4

**Current Conditions**  
- **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.

| 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°         |
| 06:21  | Sunrise             | -           |
| 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°         |
| 20:05  | Sunset              | -           |

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

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

**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**  
- **Phase:** Waxing Crescent

- **Sunrise:** 06:21  
- **Sunset:** 20:05

# Daily Forecast  
- **Tonight**: Scattered Showers Night 39%, Showers Early, 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  
- **Index:** 63  
- **Health Concern:** 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 Allergies**: Grass pollen is moderate in your area  
- **Flu Risk**: Very low in your area