Ontario, OR Weather - Forecast & Monthly Averages

TEMPERATURE	31
HUMIDITY	89
PRESSURE	102200
WIND COND.

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Weather Quick Facts

The highest monthly average temperature in Ontario for July is 78.8 degrees
The lowest monthly average temperature in Ontario for January is 27.4 degrees
The most monthly precipitation in Ontario occurs in December with 1.8 inches
The air quality index in Ontario is 14% better than the national average
The pollution index in Ontario is 40% better than the national average

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Ontario Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	20°F	36°F	27°F	1.1"
February	26°F	47°F	36°F	0.7"
March	33°F	58°F	44°F	1.2"
April	37°F	66°F	51°F	0.7"
May	45°F	76°F	60°F	1.2"
June	53°F	86°F	69°F	0.7"
July	61°F	97°F	79°F	0.1"
August	57°F	93°F	75°F	0.2"
September	48°F	83°F	64°F	0.4"
October	38°F	67°F	51°F	0.8"
November	29°F	50°F	38°F	1.1"
December	20°F	37°F	28°F	1.8"

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Ontario air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
Index	Ontario	Oregon	National
Air quality index	36	32	42
Pollution index	1,647,310	7,156,356	2,726,193

Ontario air quality

Measurement	Total
Days measured	365
Days with good air quality	293
Days with moderate air quality	60
Days w/ poor A.Q. for sensitive groups	9
Days with unhealthy air quality	3

Air quality details

Pollutant	Total
Arsenic	0.001%
Benzene	0.010%
Carbon Tetrachloride	0.002%
Lead	0.001%
Mercury	0.000%

Average monthly Ontario temperature with heat index

Ontario monthly precipitation with daily maximum

Ontario monthly snow depth with daily maximum

Ontario monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Payette, ID	7,655	36	28.0%
Nyssa, OR	3,176	36	28.0%
Fruitland, ID	5,390	36	28.0%
Vale, OR	2,210	36	28.0%
New Plymouth, ID	1,641	36	28.0%
Ontario, OR	11,031	36	28.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Middle Island, NY	11,030	43	14.0%
Spencer, IA	11,038	35	30.0%
Doctor Phillips, FL	11,020	39	22.0%
Franklin Lakes, NJ	11,044	51	2.0%
New Baltimore, VA	11,017	38	24.0%
Ontario, OR	11,031	36	28.0%

Source: The Ontario, OR weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.