Temperature
61 F at 9 PM; 71 F at its warmest, 10 PM Wednesday, and 49 F at its coolest, 6 AM.
- Now
- 61F
- 9 PM
- Highest
- 71F
- 10 PM Wednesday
- Lowest
- 49F
- 6 AM
How it is measured: Stevenson screen and siting, Field Book FB-INS-009
Airports/Pennsylvania/Heritage Field
Heritage Field, Pennsylvania
Small airport in Montgomery County, Pennsylvania60°
66°/52°
Overcast·
Feels like 60°·Light breeze 7 mph SE
Coming up. Rain is likely tomorrow evening, from about 7 PM (60%).
Now. Heritage Field is 60° and overcast at 9 PM. The dew point is 51°, so the air feels dry and comfortable. Light breeze from the southeast at 7 mph.
Today and tonight. Tonight falls to about 56° by 12 AM, under cloud.
The week. The warmest day ahead is tomorrow, near 78°, and the coolest Saturday, near 53°. Rain is likely tomorrow (91%). Rain is possible Saturday (35%). Frost is possible Sunday morning, a low of 34°.
The sky now. The Moon is a waxing crescent, 25% lit, and stays below the horizon until dawn. The next full Moon is Monday, Oct 26. Look for Saturn, bright in the 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. Cloud is forecast to cover most of the night, so the sky will be hard to see. The day is 11 hours 11 minutes long, 3 minutes shorter than yesterday.
0UV Low
27Air quality
72%Humidity
97%Cloud
Now
9:00 PM
60feels60
now, overcast
Today
Oct 15
6652
10%
Fri
Oct 16
7855
91%
12mph
Sat
Oct 17
5345
35%
14mph
Sun
Oct 18
5634
clear day
Mon
Oct 19
6137
mostly clear day
Tue
Oct 20
6540
partly cloudy day
Wed
Oct 21
6644
mostly clear day
60°
66°52°
78°55°
53°45°
56°34°
61°37°
65°40°
66°44°
As of 9:00 PM in Heritage Field, Pennsylvania.
Air quality
The air at Heritage Field
Index 27, good, led by ozone. Read at 9 PM from its reporting area, Lehigh Valley (PA), 26 miles off.
27Good
- Fine particles (PM2.5)16Good15.9 mi
- Ozone27Good25 ppb15.9 mi
The days ahead
Good each day through Sun Oct 18, led by fine particles. Yesterday measured 50, good.
GoodModerate
- 50YesterdayOct 14
- 26TodayOct 15
- 29FriOct 16
- 8SatOct 17
- GoodSunOct 18
Smoke, the next 42 hours
Little smoke near the ground through Sat 2 PM: the index from smoke stays at 6 or under.
Precipitation
What has fallen at Heritage Field
None in the last 3 days, to Thu 8 PM. Measured by radar and rain gauges, as water.
- Last 24 hours
- 0.00in
- Last 3 days
- 0.00in
Visibility
How far you can see at Heritage Field, the next 42 hours
Mist or haze: visibility falls to 2 miles Fri 7 PM.
F
Now, today, and the week
Weather instrument stations by state
Airfield
- Code
- PTW
- ICAO
- KPTW
- IATA
- PTW
- Field elevation
- 309 ft
- Serves
- Pottstown
- Kind
- Small airport
- Scheduled service
- No
- Its own instrument
- PTW
- Wind now
- From 160° at 7 mph, read 15 Oct, 21:35
Runways
| Runway | Length | Width | Surface | Heading, true | Wind along it now | Crosswind now |
|---|---|---|---|---|---|---|
| 10 / 28 | 3,371 ft | 75 ft | Asphalt | 84° / 264° | 2 mph head, on 10 | 7 mph from the right |
Measured here
What the airfield's own instrument measured, the last 24 hours
Every hour from Pottstown Limerick Airport (PTW), Heritage Field's own instrument, measure by measure, on the field's own clock.
Humidity and dew point
A dew point of 52 F, the air 72% saturated; the humidity ran from 52% at 3 PM to 93% at 6 AM.
- Dew point now
- 52F
- 9 PM
- Humidity now
- 72%
- Humidity, range
- 52 to 93%
How it is measured: Humidity variables, Field Book FB-WAT-002
Wind
7 mph from the south southeast at 9 PM; at its strongest 12 mph, 1 AM, with a gust of 26 mph at 1 AM.
- Now
- 7mph
- from the south southeast
- Strongest
- 12mph
- 1 AM
- Highest gust
- 26mph
- 1 AM
How it is measured: Coriolis as geometry, Field Book FB-ENG-008
Pressure
30.16 inHg at 9 PM, steady over 3 hours; 0.14 inHg higher than a day before.
- Now
- 30.16inHg
- 9 PM
- 3 hours
- -0.02inHg
- steady
- 24 hours
- +0.14inHg
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 2,100 ft at 9 PM; a base was reported in 5 of the hours.
- Lowest base now
- 2,100ft
- Lowest in 24 hours
- 2,100ft
- 9 PM
- Hours with a base reported
- 5
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
What is measuring near here
The 6 instruments nearest Heritage Field, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.1 miles away.
measured now4 instruments
At an airfield/0.1 mi away/308 ft/1 ft below here
temp, wind, gust, visibility, precip, pressure
Perkiomen Creek AT GraterfordGRAP1
At a river or reservoir gauge/5.6 mi away/161 ft/148 ft below here
temp, wind, gust, humidity, pressure
I-176 E/B @ SR 422 Interchange B PA US PADOTPA062
Beside a road/18.6 mi away/285 ft/24 ft below here
temp, pavement temp, wind, visibility, precip
Avondale 2 N03761
At a climate reference station/29.4 mi away/400 ft/91 ft above here
temp, humidity, wind, solar, precip
measured daily2 instruments
Limerick 1.1 WPA-MT-68
In a volunteer observer's own ground/0.9 mi away/321 ft/12 ft above here
precip, snowfall, snow depth
Spring City 2WSWSGCP1
At a cooperative observer's station/4.8 mi away/253 ft/56 ft below here
snowfall, snow depth, precip, high, low
What the snow tracker reads here
Every instrument in this state
-
Snow on the ground
Elsewhere in Pennsylvania
24 places, each with its own forecast and its own instruments.
Allegheny National ForestfeatureAllentowncityAltoonacityBlue Mountainski areaCamelbackski areaElk Mountainski areaEriecityHarrisburgcityJack Frost Big Boulderski areaJohnstowncityLaurel Ridge State ParkfeatureLiberty Mountainski areaMontage Mountainski areaPhiladelphiacityPittsburghcityRoundtopski areaScrantoncitySeven Springsski areaShawnee Mountainski areaState CollegetownStroudsburgtownWhitetailski areaWilkes BarrecityWilliamsportcity
Near Heritage Field
The nearest places, each with its own forecast and the instruments nearest it.
- Sanatogacommunity, 2 mi
- Pottsgrovecommunity, 3 mi
- Royersfordborough, 4 mi
- Kenilworthcommunity, 4 mi
- Spring Cityborough, 4 mi
- Pottstownborough, 5 mi
- Schwenksvilleborough, 5 mi
- Halfway Housecommunity, 5 mi
- Trappeborough, 5 mi
- South Pottstowncommunity, 5 mi
- Spring Mountcommunity, 6 mi
- Gilbertsvillecommunity, 6 mi
Airports near Heritage Field
- Quakertown AirportUKT, 16 mi
- Wings FieldLOM, 17 mi
- Brandywine Regional AirportOQN, 17 mi
- Pennridge AirportCKZ, 17 mi
- Allentown Queen City Municipal AirportXLL, 23 mi
- Reading Regional Airport (Carl A Spaatz Field)RDG, 24 mi
- Doylestown AirportDYL, 24 mi
- Chester County G O Carlson AirportMQS, 24 mi