Cornwall, ON Weather - Forecast & Monthly Averages

TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.

Weather Quick Facts

The highest monthly average temperature in Cornwall for n/a is n/a degrees
The lowest monthly average temperature in Cornwall for n/a is n/a degrees
The most monthly precipitation in Cornwall occurs in n/a with n/a inches
The air quality index in Cornwall is 100% better than the national average
The pollution index in Cornwall is 100% better than the national average

Compare Cornwall, ON Weather

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Cornwall 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	n/a°F	n/a°F	n/a°F	n/a
February	n/a°F	n/a°F	n/a°F	n/a
March	n/a°F	n/a°F	n/a°F	n/a
April	n/a°F	n/a°F	n/a°F	n/a
May	n/a°F	n/a°F	n/a°F	n/a
June	n/a°F	n/a°F	n/a°F	n/a
July	n/a°F	n/a°F	n/a°F	n/a
August	n/a°F	n/a°F	n/a°F	n/a
September	n/a°F	n/a°F	n/a°F	n/a
October	n/a°F	n/a°F	n/a°F	n/a
November	n/a°F	n/a°F	n/a°F	n/a
December	n/a°F	n/a°F	n/a°F	n/a

Cornwall 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	Cornwall	Ontario	National
Air quality index	n/a	n/a	42
Pollution index	n/a	n/a	2,726,193

Cornwall air quality

Measurement	Total
Days measured
Days with good air quality
Days with moderate air quality
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Air quality details

Pollutant	Total
Arsenic	n/a%
Benzene	n/a%
Carbon Tetrachloride	n/a%
Lead	n/a%
Mercury	n/a%

Average monthly Cornwall temperature with heat index

Cornwall monthly precipitation with daily maximum

Cornwall monthly snow depth with daily maximum

Cornwall monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Brushton, NY	528	0	100.0%
Fort Covington Hamlet, NY	1,369	0	100.0%
Massena, NY	9,855	0	100.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Littleton, CO	47,719	58	16.0%
Bothell, WA	47,762	45	10.0%
Four Corners, FL	47,768	39	22.0%
Everett, MA	47,660	43	14.0%
Hattiesburg, MS	47,823	35	30.0%
Cornwall, ON	47,736	n/a

Source: The Cornwall, ON 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.