Weather in Herndon, United States
Weather Advisories
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Today's weather summary
The weather in Herndon on Monday, April 29th, is going to be clear throughout the entire day with no significant change.
Weather details for Herndon, on Monday, April 29th:
The highest temperature of the day will be 88°F around 6 pm. The day will have comfortable humidity, with average humidity of 55%, ranging from 34% to a maximum value of 85% at about 6 am. The wind will be light, and will get up to 9 mph at 1 am, blowing from the south-west. The sky will be clear of clouds along the day.
There is no probability for any precipitation throughout the day. The dew point will range from 55°F up to a maximum value of 58°F around 10 am.
The visibility is expected to be good with average visibility of 10 mi throughout the day. Atmospheric pressure will be normal with average pressure of 1016 hPa. Sunrise will be at 6:16 am, and sunset at 7:56 pm. The day will have 13 hours and 40 minutes of daylight.
Air quality forecast for Herndon, on Monday, April 29th:
On average, the air quality on this day will be moderate, meaning that air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. According to our index, ranging from 0 to 500, the air quality is going to be between values of 26 and 67.
Pollen forecast for Herndon, on Monday, April 29th:
Tree pollen on this day is expected to have very high risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have very low risk.
The weather in Herndon on Tuesday, April 30th, will be cloudy throughout the day, with clear skies before dawn.
There is also a chance for some clouds before dawn around 2 am.
Weather information for Herndon, on Tuesday, April 30th:
The maximum temperature during the day will be 87°F around 3 pm. The day will have comfortable humidity, with average humidity of 46%, ranging from 33% to a maximum value of 62% at about 11 pm. The wind will be breezy, and will get up to 12 mph at 7 pm, blowing from the south. The cloud coverage will range from 1% around midnight to as high as 100% around 11 pm with an average of 83%.
There is no probability for any precipitation throughout the day. The dew point will range from 47°F up to a maximum value of 57°F around 11 pm.
The visibility is expected to be good with average visibility of 10 mi throughout the day. Atmospheric pressure will be normal with average pressure of 1011 hPa. Sunrise will be at 6:15 am, and sunset at 7:57 pm. The day will have 13 hours and 42 minutes of daylight.
Air quality forecast for Herndon, on Tuesday, April 30th:
On average, the air quality on this day will be good, meaning that air quality is satisfactory, and air pollution poses little or no risk. According to our index, ranging from 0 to 500, the air quality is going to be between values of 29 and 50.
Pollen forecast for Herndon, on Tuesday, April 30th:
Tree pollen on this day is expected to have very high risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have very low risk.
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