# Herndon Weather

## Location

Herndon, 20170, Virginia, United States

As of 21:11 GMT-4  
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.

### Hourly Forecast

| 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°         |
| 6:21   | Sunrise              | -           |
| 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°         |
| 20:05  | Sunset              | -           |
| 22:00  | Partly Cloudy Night  | 76°         |
| 23:00  | Partly Cloudy Night  | 75°         |
| 0:00   | Partly Cloudy Night  | 74°         |
| 1:00   | Partly Cloudy Night  | 72°         |
| 2:00   | Partly Cloudy Night  | 72°         |
| 3:00   | Partly Cloudy Night  | 71°         |
| 4:00   | Partly Cloudy Night  | 70°         |
| 5:00   | Partly Cloudy Night  | 70°         |
| 6:00   | Partly Cloudy Night  | 70°         |
| 7:00   | Partly Cloudy Day   | 70°         |

### Wind

Wind: 4 mph N

### Humidity

Humidity: 81%

### Air Quality

Air Quality Index: 63 - Moderate  
Dew Point: 71°  
Pressure: 30.04 in  
UV Index: 0 of 11  
Visibility: 10 mi  
Moon Phase: Waxing Crescent

## Daily Forecast

| Date       | Condition              | 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

63 — 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 pollen is moderate in your area. Flu risk is very low in your area.