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Weather in Ontario, United States

84°
Clear
Feels like 81°
·
High88°Low61°
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Air quality

Full Details
0
46
500
Air quality:Good

Pollen index

Full Details
Tree
0/5
012345
Weed
0/5
012345
Grass
0/5
012345

Tomorrow's weather summary

The weather in Ontario on Tuesday, July 21st, will be foggy for most of the day, with some clouds in the early morning.

There's seems to be also high probability of cloud overcast before dawn at about 12 am.

Weather details for Ontario, on Tuesday, July 21st:

The highest temperature of the day is going to be 69°F at about 11 am. The day will have very high relative humidity, with average humidity of 83%, ranging from 63% to a maximum value of 100% at about 8 am. The wind will be light, and will get up to 6 mph at 1 pm, blowing from the west. The cloud coverage will range from 10% around 10 am to as high as 100% around 6 am with an average of 60%.

There is no probability for any precipitation throughout the day. The dew point will range from 53°F up to a maximum value of 58°F around 1 pm.

The visibility is expected to be fair with average visibility of 4 mi throughout the day. Atmospheric pressure will be normal with average pressure of 1015 hPa. Sunrise will be at 7:03 am, and sunset at 9:22 pm. The day will have 14 hours and 19 minutes of daylight.

Air quality forecast for Ontario, on Tuesday, July 21st:

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 33 and 56.

Pollen forecast for Ontario, on Tuesday, July 21st:

The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have no risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.

The weather in Ontario on Wednesday, July 22nd, will be clear throughout the day, with light fog around noon.

There's seems to be also high probability of some clouds around noon around 12 pm.

Weather information for Ontario, on Wednesday, July 22nd:

The highest temperature of the day is going to be 66°F at about 11 am. The day will have very high relative humidity, with average humidity of 83%, ranging from 65% to a maximum value of 98% at about 11 pm. 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 1% around 9 am to as high as 92% around 9 pm with an average of 35%.

There is no probability for any precipitation throughout the day. The dew point will range from 53°F up to a maximum value of 60°F around 11 pm.

The visibility is expected to be fair with average visibility of 5 mi throughout the day. Atmospheric pressure will be normal with average pressure of 1015 hPa. Sunrise will be at 7:04 am, and sunset at 9:22 pm, making it a total of 14 hours and 18 minutes of daylight.

Air quality forecast for Ontario, on Wednesday, July 22nd:

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 36 and 53.

Pollen forecast for Ontario, on Wednesday, July 22nd:

The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have no risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.

FAQ

How warm does it get in Ontario?
The average annual highest temperature in Ontario is 38.8°C (101.8°F), and the July 26th is the hottest day on average.
How cold does it get in Ontario?
The average annual lowest temperature in Ontario is -11.7°C (10.9°F), and the December 31st is the coldest day on average.
Which month has the most rain in Ontario?
The wettest months in Ontario are March and December.
What months does it snow in Ontario?
The most common time of year for snow is December and January.