# Hourly weatherLocationHerndon, 20170, Virginia, United States · as of 9:28 pm GMT-4

Tomorrow's maximum UV index will be a little higher than today's.

## Friday, 14 August

### 21:30
- **Temperature**: 77°  
- **Condition**: Mostly Cloudy Night  
- **Rain Probability**: 3%  
- **Humidity**: 82%  
- **Wind**: 4mph  
- **Precipitation**: 0in

### 21:45
- **Temperature**: 76°  
- **Condition**: Mostly Cloudy Night  
- **Rain Probability**: 3%  
- **Humidity**: 83%  
- **Wind**: 4mph  
- **Precipitation**: 0in

### 22:00
- **Temperature**: 76°  
- **Condition**: Partly Cloudy Night  
- **Rain Probability**: 7%  
- **Humidity**: 84%  
- **Wind**: 4mph  
- **Precipitation**: 0in

### 22:15
- **Temperature**: 76°  
- **Condition**: Partly Cloudy Night  
- **Rain Probability**: 4%  
- **Humidity**: 85%  
- **Wind**: 4mph  
- **Precipitation**: 0in

### 22:30
- **Temperature**: 75°  
- **Condition**: Partly Cloudy Night  
- **Rain Probability**: 3%  
- **Humidity**: 86%  
- **Wind**: 4mph  
- **Precipitation**: 0in

### 23:00
- **Temperature**: 75°  
- **Condition**: Partly Cloudy Night  
- **Rain Probability**: 3%  
- **Humidity**: 88%  
- **Wind**: 4mph  
- **Precipitation**: 0in

## Saturday, 15 August

### 0:00
- **Temperature**: 74°  
- **Condition**: Partly Cloudy Night  
- **Rain Probability**: 4%  
- **Humidity**: 90%  
- **Wind**: 4mph  
- **Precipitation**: 0in

### Hourly Overview
- **1:00**: 72°, Partly Cloudy Night, 4% Rain, 97% Humidity, 3mph Wind, 0in Rain  
- **2:00**: 72°, Partly Cloudy Night, 3% Rain, 97% Humidity, 3mph Wind, 0in Rain  
- **3:00**: 71°, Partly Cloudy Night, 3% Rain, 98% Humidity, 3mph Wind, 0in Rain  
- **4:00**: 70°, Partly Cloudy Night, 5% Rain, 99% Humidity, 4mph Wind, 0in Rain  
- **5:00**: 70°, Mostly Clear Night, 8% Rain, 99% Humidity, 3mph Wind, 0in Rain  
- **6:00**: 69°, Partly Cloudy Night, 8% Rain, 98% Humidity, 4mph Wind, 0in Rain  
- **7:00**: 69°, Partly Cloudy Day, 7% Rain, 96% Humidity, 4mph Wind, 0in Rain  
- **8:00**: 72°, Mostly Clear Day, 7% Rain, 88% Humidity, 4mph Wind, 0in Rain  
- **9:00**: 75°, Mostly Clear Day, 4% Rain, 79% Humidity, 4mph Wind, 0in Rain  
- **10:00**: 78°, Mostly Clear Day, 2% Rain, 71% Humidity, 4mph Wind, 0in Rain  
- **11:00**: 80°, Mostly Clear Day, 1% Rain, 64% Humidity, 4mph Wind, 0in Rain  
- **12:00**: 82°, Mostly Clear Day, 1% Rain, 59% Humidity, 4mph Wind, 0in Rain  
- **13:00**: 84°, Partly Cloudy Day, 3% Rain, 56% Humidity, 4mph Wind, 0in Rain  
- **14:00**: 84°, Partly Cloudy Day, 1% Rain, 55% Humidity, 3mph Wind, 0in Rain  
- **15:00**: 85°, Partly Cloudy Day, 0% Rain, 54% Humidity, 4mph Wind, 0in Rain  
- **16:00**: 85°, Partly Cloudy Day, 0% Rain, 54% Humidity, 3mph Wind, 0in Rain  
- **17:00**: 85°, Partly Cloudy Day, 0% Rain, 56% Humidity, 4mph Wind, 0in Rain  
- **18:00**: 84°, Partly Cloudy Day, 0% Rain, 57% Humidity, 4mph Wind, 0in Rain  
- **19:00**: 82°, Mostly Cloudy Day, 1% Rain, 60% Humidity, 5mph Wind, 0in Rain  
- **20:00**: 80°, Mostly Cloudy Day, 1% Rain, 66% Humidity, 4mph Wind, 0in Rain  
- **21:00**: 78°, Cloudy, 2% Rain, 69% Humidity, 3mph Wind, 0in Rain  
- **22:00**: 77°, Mostly Cloudy Night, 2% Rain, 74% Humidity, 4mph Wind, 0in Rain  
- **23:00**: 76°, Mostly Cloudy Night, 4% Rain, 77% Humidity, 5mph Wind, 0in Rain

## Sunday, 16 August

### Hourly Overview
- **0:00**: 76°, Cloudy, 7% Rain, 80% Humidity, 5mph Wind, 0in Rain  
- **1:00**: 75°, Mostly Cloudy Night, 8% Rain, 83% Humidity, 4mph Wind, 0in Rain  
- **2:00**: 75°, Mostly Cloudy Night, 16% Rain, 85% Humidity, 5mph Wind, 0in Rain  
- **3:00**: 74°, Mostly Cloudy Night, 9% Rain, 89% Humidity, 5mph Wind, 0in Rain  
- **4:00**: 74°, Mostly Cloudy Night, 15% Rain, 89% Humidity, 5mph Wind, 0in Rain  
- **5:00**: 74°, Cloudy, 13% Rain, 89% Humidity, 5mph Wind, 0in Rain  
- **6:00**: 74°, Cloudy, 24% Rain, 90% Humidity, 6mph Wind, 0in Rain  
- **7:00**: 74°, Few Showers, 33% Rain, 92% Humidity, 6mph Wind, 0.01in Rain  
- **8:00**: 74°, Showers, 59% Rain, 92% Humidity, 7mph Wind, 0.05in Rain  
- **9:00**: 75°, Rain, 70% Rain, 90% Humidity, 8mph Wind, 0.07in Rain  
- **10:00**: 75°, Thunderstorms, 69% Rain, 90% Humidity, 8mph Wind, 0.02in Rain  
- **11:00**: 75°, Thunderstorms, 66% Rain, 91% Humidity, 10mph Wind, 0.04in Rain  
- **12:00**: 76°, Scattered Thunderstorms, 53% Rain, 92% Humidity, 10mph Wind, 0.03in Rain  
- **13:00**: 75°, Thunderstorms, 79% Rain, 97% Humidity, 11mph Wind, 0.1in Rain  
- **14:00**: 75°, Thunderstorms, 60% Rain, 98% Humidity, 10mph Wind, 0.05in Rain  
- **15:00**: 77°, Scattered Thunderstorms, 52% Rain, 91% Humidity, 9mph Wind, 0.03in Rain  
- **16:00**: 77°, Scattered Thunderstorms, 56% Rain, 90% Humidity, 8mph Wind, 0.04in Rain  
- **17:00**: 77°, Thunderstorms, 81% Rain, 96% Humidity, 8mph Wind, 0.16in Rain  
- **18:00**: 78°, Thunderstorms, 65% Rain, 92% Humidity, 8mph Wind, 0.06in Rain  
- **19:00**: 78°, Scattered Thunderstorms, 42% Rain, 90% Humidity, 8mph Wind, 0.01in Rain  
- **20:00**: 77°, Mostly Cloudy Day, 24% Rain, 93% Humidity, 7mph Wind, 0in Rain  
- **21:00**: 76°, Scattered Thunderstorms Night, 52% Rain, 95% Humidity, 6mph Wind, 0.03in Rain

## Air Quality Index
- **Index**: 61  
- **Status**: Moderate  
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