# Herndon Weather

## Location
Herndon, 20170, Virginia, United States

·

As of 21:11 GMT-4  
**Now** 79°  
**Cloudy**  
**Feels Like** 77°  
**High** 83°  
**Low** 68°  
**Chance of Rain** 5%  
**0 in**

## Today's outlook
Tonight's low temperature will be a little cooler than last night's.

| 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°         |

## Wind
- **Wind:** 4 mph N
- **Humidity:** 81%
- **Air Quality:** 63 - Moderate
- **Dew Point:** 71°
- **Pressure:** 30.04 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 | Low  | High |
|--------|-----------------------|-----------------|------|------|
| Tonight | Partly Cloudy Night   | 8%              | 68°  | 83°  |
| 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
- **Index:** 63
- **Health & Activities:** 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.

## Grass Pollen Forecast
- **Seasonal Allergies:** Grass pollen is moderate in your area.

## Flu Forecast
- **Risk:** Flu risk is very low in your area.