# Herndon Weather

**Location**  
Herndon, 20170, Virginia, United States  
As of 8:51 pm GMT-4

**Current Conditions**  
- Now: 79°  
- Cloudy  
- Feels Like: 77°  
- High: 85°  
- Low: 69°  
- Chance of Rain: 24%

## Today's Outlook  
Tonight's low temperature will be nearly the same as last night's.

| Time | Description          | 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°         |

**Wind**: 4 mph N  
**Humidity**: 80%  
**Air Quality**: 61 - Moderate  
**Dew Point**: 71°  
**Pressure**: 30.04 in  
**UV Index**: 0 of 11  
**Visibility**: 10 mi  
**Moon Phase**: Waxing Crescent  
**Sunrise**: 06:21  
**Sunset**: 20:05

# Daily Forecast

| Date     | Description                  | 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

**61 - 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**: Seasonal Allergies and Pollen Count Forecast  
Grass pollen is moderate in your area.

**Flu**: Cold & Flu Forecast  
Flu risk is very low in your area.