# Herndon Weather

## Location
Herndon, 20170, Virginia, United States

·  
As of 9:11 pm GMT-4

## Current Conditions
**Now** 79°  
**Condition**: Cloudy  
**Feels Like**: 77°  
**High**: 83°  
**Low**: 68°  
**Chance of Rain**: 5%

## Today's Outlook
Tonight's low temperature will be nearly the same as 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 and Weather Conditions
- **Wind**: 4 mph N  
- **Humidity**: 81%  
- **Air Quality Index**: 63 - 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         | Condition          | Precipitation | 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  
- **Status**: Moderate  
- **Description**: 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  
- **Flu Risk**: Very low