# Daily Forecast

## Location
Herndon, 20170, Virginia, United States

·

As of 9:08 pm GMT-4

## Day Conditions

| Day         | Conditions         | Rain Chance | Temperature Low | Temperature High | Wind  |
|-------------|---------------------|-------------|------------------|-------------------|-------|
| Tonight     | Showers Early       | 39%         | 69°              | 85°               | 5mph  |
| Sat 15     | Partly Cloudy       | 7%          | 73°              | 87°               | 5mph  |
| Sun 16     | Thunderstorms       | 89%         | 74°              | 81°               | 11mph |
| Mon 17     | Partly Cloudy       | 15%         | 68°              | 90°               | 11mph |
| Tue 18     | Mostly Sunny        | 5%          | 65°              | 85°               | 7mph  |
| Wed 19     | Mostly Sunny        | 7%          | 72°              | 88°               | 8mph  |
| Thu 20     | PM T-Storms        | 50%         | 65°              | 87°               | 8mph  |
| Fri 21     | Partly Cloudy       | 17%         | 66°              | 81°               | 7mph  |
| Sat 22     | Showers             | 50%         | 65°              | 77°               | 8mph  |
| Sun 23     | AM Showers          | 46%         | 66°              | 78°               | 7mph  |
| Mon 24     | Partly Cloudy       | 24%         | 67°              | 85°               | 6mph  |
| Tue 25     | Partly Cloudy       | 12%         | 69°              | 88°               | 7mph  |
| Wed 26     | Partly Cloudy       | 20%         | 70°              | 88°               | 7mph  |
| Thu 27     | Partly Cloudy       | 24%         | 67°              | 86°               | 7mph  |
| Fri 28     | Partly Cloudy       | 24%         | 66°              | 84°               | 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.

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

## 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.