Temperature
41 F at 2 AM; 60 F at its warmest, 2 PM Thursday, and 39 F at its coolest, 11 PM Thursday.
- Now
- 41F
- 2 AM
- Highest
- 60F
- 2 PM Thursday
- Lowest
- 39F
- 11 PM Thursday
How it is measured: Stevenson screen and siting, Field Book FB-INS-009
Portland International Jetport, Maine
Large airport in Cumberland County, Maine43°
66°/40°
Clear·
Feels like 43°·Light air 1 mph E
Coming up. Rain is likely this morning, from about 9 AM, the chance peaking at 78% around 11 AM.
Now. Portland International Jetport is 43° and clear at 3 AM. The dew point is 37°, so the air feels dry and comfortable. Light air from the east at 1 mph.
Today and tonight. It warms to about 61° by 8 PM. Tonight falls to about 43° by 8 AM, with some cloud.
The week. The warmest day ahead is Tuesday, near 61°, and the coolest tomorrow, near 51°. Rain is possible tomorrow (46%). The first freeze could come Sunday, a low of 30°.
The sky tonight. The sun sets at 5:57 PM. The Moon is a waxing crescent, 33% lit, and sets at 9:38 PM. The next full Moon is Monday, Oct 26. After dark, look for Saturn, bright in the east-southeast. A planet shines with a steady light where the stars around it twinkle. The Orionids meteor shower is active, peaking around Oct 21: at its peak, up to about 20 meteors an hour can be seen from a dark site. The day is 11 hours 2 minutes long, 3 minutes shorter than yesterday.
0UV Low
23Air quality
86%Humidity
2%Cloud
Now
3:00 AM
43feels43
now, clear
Today
Oct 16
6640
100%
17mph
Sat
Oct 17
5139
46%
17mph
Sun
Oct 18
5430
clear day
Mon
Oct 19
5734
clear day
Tue
Oct 20
6136
partly cloudy day
Wed
Oct 21
5838
mostly clear day
Thu
Oct 22
5435
partly cloudy day
43°
66°40°
51°39°
54°30°
57°34°
61°36°
58°38°
54°35°
As of 3:00 AM in Portland International Jetport, Maine.
Air quality
The air at Portland International Jetport
Index 23, good, led by ozone. Read at 2 AM from its reporting area, Southwest Coast (ME), 5 miles off.
23Good
- Fine particles (PM2.5)18Good-
- Ozone23Good-
- Coarse particles (PM10)5Good-
The days ahead
Good each day through Tue Oct 20, led by ozone. Yesterday measured 26, good.
GoodModerate
- 26YesterdayOct 15
- GoodTodayOct 16
- GoodSatOct 17
- GoodSunOct 18
- GoodMonOct 19
- GoodTueOct 20
Smoke, the next 42 hours
No smoke near the ground through Sat 8 PM.
Precipitation
What has fallen at Portland International Jetport
None in the last 24 hours; 0.37 in over the last 3 days, to Fri 2 AM. Measured by radar and rain gauges, as water.
- Last 24 hours
- 0.00in
- Last 3 days
- 0.37in
3 days agoLast 24 hours 0%
Visibility
How far you can see at Portland International Jetport, the next 42 hours
Dense fog: visibility falls to 0.1 miles Fri 2 PM, under a mile for 2 hours.
F
Now, today, and the week
Weather instrument stations by state
Airfield
- Code
- PWM
- ICAO
- KPWM
- IATA
- PWM
- Field elevation
- 76 ft
- Serves
- Portland
- Kind
- Large airport
- Scheduled service
- Yes
- Its own instrument
- PWM
- Wind now
- Calm, read 16 Oct, 02:51
Runways
| Runway | Length | Width | Surface | Heading, true | Wind along it now | Crosswind now |
|---|---|---|---|---|---|---|
| 11 / 29 | 7,200 ft | 150 ft | Asphalt | 96° / 276° | Calm | Calm |
| 18 / 36 | 6,100 ft | 150 ft | Asphalt | 164° / 344° | Calm | Calm |
Measured here
What the airfield's own instrument measured, the last 24 hours
Every hour from Portland INTL Jet (PWM), Portland International Jetport's own instrument, measure by measure, on the field's own clock.
Humidity and dew point
A dew point of 37 F, the air 86% saturated; the humidity ran from 34% at 3 PM Thursday to 92% at 11 PM Thursday.
- Dew point now
- 37F
- 2 AM
- Humidity now
- 86%
- Humidity, range
- 34 to 92%
How it is measured: Humidity variables, Field Book FB-WAT-002
Wind
Calm at 3 AM; at its strongest 14 mph, 6 AM Thursday, with a gust of 33 mph at 5 AM Thursday.
- Now
- 0mph
- calm
- Strongest
- 14mph
- 6 AM Thursday
- Highest gust
- 33mph
- 5 AM Thursday
How it is measured: Coriolis as geometry, Field Book FB-ENG-008
Pressure
30.10 inHg at 3 AM, falling 0.06 inHg over 3 hours; 0.06 inHg higher than a day before.
- Now
- 30.10inHg
- 3 AM
- 3 hours
- -0.06inHg
- falling
- 24 hours
- +0.06inHg
How it is measured: Hydrostatic balance, Field Book FB-ENG-003
Visibility
10 miles or more every hour.
- Now
- 10+mi
- Lowest
- 10+mi
- Hours under a mile
- 0
How it is measured: Fog types, Field Book FB-WAT-020
Cloud base
The lowest cloud base came down to 4,500 ft at 6 AM Thursday; a base was reported in 19 of the hours.
- Lowest base now
- -
- Lowest in 24 hours
- 4,500ft
- 6 AM Thursday
- Hours with a base reported
- 19
How it is measured: Cloud classification, Field Book FB-SKY-001
Precipitation
None measured in the gauge in the last 24 hours.
- Last 24 hours
- 0.00in
- Wettest hour
- -
- Hours with some
- 0
How it is measured: ASOS, Field Book FB-INS-002
Portland INTL Jet: every reading, the last 7 days, 30 days and the year, and how well it reports
What is measuring near here
The 5 instruments nearest Portland International Jetport, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.4 miles away.
measured now3 instruments
At an airfield/0.4 mi away/62 ft/14 ft below here
temp, wind, gust, visibility, precip, pressure
Beside a road/5.2 mi away/10 ft/66 ft below here
temp, pavement temp, wind, visibility, precip
Nerrs Meteorological Site At Wells ReserveWEXM1
At a river or reservoir gauge/24.3 mi away/34 ft/42 ft below here
temp, wind, gust, humidity, pressure
measured daily2 instruments
Portland 4.9 WME-CM-168
In a volunteer observer's own ground/0.9 mi away/48 ft/28 ft below here
precip, snowfall, snow depth
Windham 2NWWNDM1
At a cooperative observer's station/16.5 mi away/384 ft/308 ft above here
snowfall, snow depth, precip, high, low
What the snow tracker reads here
Every instrument in this state
0in
Snow on the ground
Measured at Windham 2NW (WNDM1), 16.5 miles from here, read 15 Oct, 08:00. measured daily
Elsewhere in Maine
23 places, each with its own forecast and its own instruments.
Acadia National ParkfeatureAugustacityBangorcityBaxter State ParkfeatureBetheltownBig Rockski areaBlack Mountain of Maineski areaCamden Snow Bowlski areaCariboucityFort KenttownGreenvilletownHoultontownKingfieldtownLost Valleyski areaMillinockettownMount KatahdinfeaturePleasant Mountainski areaPortlandcityPresque IslecityRangeleytownSaddlebackski areaSugarloafsurveyed ski areaSunday Riversurveyed ski area
Near Portland International Jetport
The nearest places, each with its own forecast and the instruments nearest it.
- South Portlandcity, 2 mi
- Portlandcity, 3 mi
- Oak Hillcommunity, 3 mi
- Westbrookcity, 3 mi
- Falmouthcommunity, 6 mi
- Dunstancommunity, 7 mi
- Gorhamcommunity, 7 mi
- Falmouth Foresidecommunity, 7 mi
- South Windhamcommunity, 8 mi
- Little Fallscommunity, 8 mi
- Old Orchard Beachcommunity, 10 mi
- Cumberland Centercommunity, 11 mi
Airports near Portland International Jetport
- Brunswick Executive AirportBXM, 25 mi
- Sanford Seacoast Regional AirportSFM, 27 mi
- Auburn Lewiston Municipal AirportLEW, 28 mi
- Wiscasset AirportIWI, 37 mi
- Eastern Slopes Regional AirportIZG, 40 mi
- Augusta State AirportAUG, 53 mi
- Knox County Regional AirportRKD, 67 mi
- Waterville Robert Lafleur AirportWVL, 69 mi