# Daily Forecast

## Location
Herndon, 20170, Virginia, United States

·

As of 9:22 pm GMT-4

| Day      | Conditions       | Temperature | Low | High | Wind  |
|----------|------------------|-------------|-----|------|-------|
| Tonight  | Partly Cloudy    | 68°         | 68° | 83°  | 4mph  |
| Sat 15   | Mostly Clear      | 73°         | 73° | 87°  | 5mph  |
| Sun 16   | Thunderstorms     | 73°         | 73° | 78°  | 11mph |
| Mon 17   | Partly Cloudy    | 68°         | 68° | 89°  | 10mph |
| Tue 18   | Mostly Clear      | 65°         | 65° | 85°  | 7mph  |
| Wed 19   | Mostly Clear      | 71°         | 71° | 88°  | 7mph  |
| Thu 20   | Scattered Thunderstorms | 66°  | 66° | 87°  | 8mph  |
| Fri 21   | Partly Cloudy    | 66°         | 66° | 82°  | 7mph  |
| Sat 22   | Showers          | 66°         | 66° | 78°  | 7mph  |
| Sun 23   | Showers          | 66°         | 66° | 79°  | 7mph  |
| Mon 24   | Partly Cloudy    | 67°         | 67° | 85°  | 6mph  |
| Tue 25   | Partly Cloudy    | 69°         | 69° | 88°  | 6mph  |
| Wed 26   | Partly Cloudy    | 69°         | 69° | 88°  | 8mph  |
| Thu 27   | Partly Cloudy    | 66°         | 66° | 86°  | 8mph  |
| Fri 28   | Partly Cloudy    | 66°         | 66° | 83°  | 7mph  |

## 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**: 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.