Downtown, Portland, ME Weather - Forecast & Monthly Averages

TEMPERATURE	12
HUMIDITY	55
PRESSURE	102070
WIND COND.	330 13

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Weather Quick Facts

The highest monthly average temperature in Downtown for July is 70.1 degrees
The lowest monthly average temperature in Downtown for January is 25 degrees
The most monthly precipitation in Downtown occurs in October with 6.9 inches
The air quality index in Downtown is 5% better than the national average
The pollution index in Downtown is 25% better than the national average

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Downtown 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	15°F	36°F	25°F	3.2"
February	15°F	37°F	26°F	4.2"
March	24°F	44°F	34°F	4.0"
April	34°F	57°F	45°F	5.0"
May	44°F	67°F	55°F	4.5"
June	53°F	75°F	63°F	5.8"
July	60°F	82°F	70°F	4.3"
August	58°F	80°F	69°F	4.4"
September	51°F	74°F	62°F	4.1"
October	41°F	62°F	51°F	6.9"
November	31°F	52°F	41°F	4.4"
December	21°F	40°F	30°F	5.3"

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Downtown 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	Downtown	Portland	Maine
Air quality index	40	40	33
Pollution index	2,043,700	2,043,700	3,417,521

Downtown air quality

Measurement	Total
Days measured	365
Days with good air quality	308
Days with moderate air quality	56
Days w/ poor A.Q. for sensitive groups	1
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.030%
Benzene	0.020%
Carbon Tetrachloride	0.003%
Lead	0.030%
Mercury	0.002%

Average monthly Downtown temperature with heat index

Downtown monthly precipitation with daily maximum

Downtown monthly snow depth with daily maximum

Downtown monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Old Orchard Beach, ME	8,952	40	20.0%
Westbrook, ME	18,935	40	20.0%
Falmouth, ME	1,877	40	20.0%
Scarborough, ME	5,268	40	20.0%
Biddeford, ME	21,502	40	20.0%
Portland, ME	66,706	40	20.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
West Des Moines, IA	66,724	39	22.0%
Redondo Beach, CA	66,663	72	44.0%
Yuba City, CA	66,660	44	12.0%
Oshkosh, WI	66,753	36	28.0%
Kenner, LA	66,759	45	10.0%
Portland, ME	66,706	40	20.0%

Source: The Downtown, Portland, ME 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.