# Daily Forecast

### Location
Herndon, 20170, Virginia, United States

·

As of 9:04 pm GMT-4

### Day Conditions
| Day       | Conditions            | Temperature | Wind        |
|-----------|-----------------------|-------------|-------------|
| Tonight   | Scattered Showers     | Low: 69°    | 5mph NNW    |
| Sat 15   | Partly Cloudy         | High: 87°   | 5mph ENE    |
| Sun 16   | Thunderstorms         | High: 81°   | 11mph S     |
| Mon 17   | Partly Cloudy         | High: 90°   | 11mph NW    |
| Tue 18   | Mostly Clear          | High: 85°   | 7mph NNW    |
| Wed 19   | Mostly Clear          | High: 88°   | 8mph SW     |
| Thu 20   | Scattered Thunderstorms| High: 87°   | 8mph NW     |
| Fri 21   | Partly Cloudy         | High: 81°   | 7mph N      |
| Sat 22   | Showers               | High: 77°   | 8mph NE     |
| Sun 23   | Scattered Showers     | High: 78°   | 7mph NNE    |
| Mon 24   | Partly Cloudy         | High: 85°   | 6mph W      |
| Tue 25   | Partly Cloudy         | High: 88°   | 7mph W      |
| Wed 26   | Partly Cloudy         | High: 88°   | 7mph W      |
| Thu 27   | Partly Cloudy         | High: 86°   | 7mph WNW    |
| Fri 28   | Partly Cloudy         | High: 84°   | 7mph NW     |

## Air Quality Index

3

### Low
Enjoy your usual outdoor activities.

[See details](/content/en-GB/forecast/air-quality/l/38.97,-77.386)

## Health & Activities

- **Grass Seasonal Allergies and Pollen Count Forecast**  
  Grass pollen is moderate in your area  
  [More Info](/content/en-GB/forecast/allergy/l/5c8860db8e32112f6e30d296f4b629e2b5f377a5fb3ac887649b02aec9b79084/index.html)  
- **Flu Cold & Flu Forecast**  
  Flu risk is very low in your area  
  [More Info](/content/en-GB/forecast/cold-flu/l/5c8860db8e32112f6e30d296f4b629e2b5f377a5fb3ac887649b02aec9b79084/index.html)