Weather in Contra Costa County, United States
Weather Advisories
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Today's weather summary
The weather in Contra Costa County on Friday, April 19th, is going to be clear for most of the day.
Additionally, there will be cloud overcast before dawn, around 12 am.
Weather information for Contra Costa County, on Friday, April 19th:
The highest temperature of the day will be 68°F at about 4 pm. The day will have very high relative humidity, with average humidity of 71%, ranging from 50% to a maximum value of 83% at about 4 am. The wind will be breezy, and will get up to 11 mph at 6 pm, blowing from the west. The cloud coverage will range from 0% around 2 am to as high as 96% around midnight with an average of 10%.
There is no probability for any precipitation throughout the day. The dew point will range from 43°F up to a maximum value of 51°F around 1 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 1014 hPa. Sunrise will be at 6:27 am, and sunset at 7:45 pm, making it a total of 13 hours and 18 minutes of daylight.
Air quality forecast for Contra Costa County, on Friday, April 19th:
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 22 and 66.
Pollen forecast for Contra Costa County, on Friday, April 19th:
Tree pollen on this day is expected to have high risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.
The weather in Contra Costa County on Saturday, April 20th, will change throughout the day from cloudy condition to clear.
According to our models cloud overcast will appear before dawn and there is a high chance for clear skies during the morning.
Weather information for Contra Costa County, on Saturday, April 20th:
The highest temperature of the day is going to be 68°F around 3 pm. The day will have high relative humidity, with average humidity of 64%, ranging from 44% to a maximum value of 83% at about 6 am. The wind will be breezy, and will get up to 11 mph at 4 pm, blowing from the west. The cloud coverage will range from 0% around 1 pm to as high as 100% around 6 am with an average of 45%.
There is no probability for any precipitation throughout the day. The dew point will range from 40°F up to a maximum value of 46°F around 11 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 1017 hPa. Sunrise will be at 6:26 am, and sunset at 7:46 pm, making it a total of 13 hours and 20 minutes of daylight.
Air quality forecast for Contra Costa County, on Saturday, April 20th:
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 25 and 62.
Pollen forecast for Contra Costa County, on Saturday, April 20th:
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 no risk.
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