Portland, CO Weather - Forecast & Monthly Averages

TEMPERATURE	34
HUMIDITY	34
PRESSURE
WIND COND.	160 13

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Weather Quick Facts

The highest monthly average temperature in Portland for July is 62.9 degrees
The lowest monthly average temperature in Portland for January is 25.5 degrees
The most monthly precipitation in Portland occurs in October with 3.3 inches
The air quality index in Portland is 5% worse than the national average
The pollution index in Portland is 90% better than the national average

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Portland 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	18°F	36°F	26°F	0.9"
February	20°F	37°F	28°F	0.8"
March	26°F	44°F	34°F	2.4"
April	31°F	50°F	40°F	1.8"
May	37°F	59°F	47°F	2.4"
June	49°F	73°F	61°F	2.8"
July	53°F	75°F	63°F	2.1"
August	51°F	72°F	60°F	2.5"
September	44°F	67°F	54°F	2.2"
October	36°F	56°F	45°F	3.3"
November	28°F	46°F	35°F	0.6"
December	19°F	36°F	27°F	1.2"

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Portland 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	Portland	Colorado	National
Air quality index	44	38	42
Pollution index	262,465	2,068,342	2,726,193

Portland air quality

Measurement	Total
Days measured	365
Days with good air quality	276
Days with moderate air quality	89
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.000%
Benzene	0.003%
Carbon Tetrachloride	0.000%
Lead	0.000%
Mercury	0.000%

Average monthly Portland temperature with heat index

Portland monthly precipitation with daily maximum

Portland monthly snow depth with daily maximum

Portland monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Ouray, CO	1,046	44	12.0%
Loghill Village, CO	707	44	12.0%
Mountain Village, CO	1,776	44	12.0%
Ridgway, CO	1,142	44	12.0%
Telluride, CO	2,059	44	12.0%
Portland, CO	126	44	12.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Venetie, AK	126	38	24.0%
Toxey, AL	126	36	28.0%
Gu Oidak, AZ	126	47	6.0%
Myers Flat, CA	126	27	46.0%
Lincoln, IA	126	39	22.0%
Portland, CO	126	44	12.0%

Source: The Portland, CO 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.