Weather StoryAlmanac, microseasons, and the day's weather story.

Westmont, Pennsylvania Weather

Honeysuckle sweetens the night. Day 90 of spring. Read this microseason across nine climate regions →

Westmont weather forecast — hour by hour, 7-day outlook, NOAA radar

Westmont, PA
Wednesday, June 17 at 4:17 PM
74
°
Mostly Clear
Feels like
70°
Humidity
47%
Wind
13 mph
Sunrise
1:45 AM
Sunset
4:48 PM
Westmont, PA
Hour by hour · 24h
24-Hour ForecastWestmont, PA: 24-hour forecast. Temperatures range from 64 to 77 degrees Fahrenheit with a 62% chance of precipitation at 7 AM.
L 64°H 77°
Westmont, PA
7-day forecast
  1. Today
    Jun 17
    Light Drizzle
    40%
    0.01″
    75°54°
  2. Thursday
    Jun 18
    Heavy Rain
    62%
    0.61″
    77°64°+2°
  3. Friday
    Jun 19
    Light Drizzle
    70°56°-7°
  4. Saturday
    Jun 20
    Light Drizzle
    10%
    69°49°-1°
  5. Sunday
    Jun 21
    Heavy Rain
    51%
    1.1″
    70°52°+1°
  6. Monday
    Jun 22
    Heavy Rain
    73%
    0.68″
    72°49°+2°
  7. Tuesday
    Jun 23
    Partly Cloudy
    32%
    77°47°+5°
Westmont, PA
Anemometer · 24h winds · from true
NESW
From · True
SW
234° · steady
Direction
SW
234°
Sustained
13
mph
Gust
22
mph
Peak 24h
23
avg 6
Beaufort · 4 · MOD BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 6 · pk 23 @ 12:00p
01020304050MPHB1B2B3B4B5B6B7B8B9-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 5018SUSTGUST
−24h−18h−12h−6hnow
Sustained 13 mph with gusts pulsing to 22 — flags snap, branches bend.
Westmont, PA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
948.8
+0.3 mb in 3h · steady · 28.02 inHg
Now
948.8
mb
3h
+0.3
mb
12h
+2.3
mb
24h
-0.3
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 946949
940945950955-21h-18h-15h-12h-9h-6h-3h-24hNOW949.2946.0948.9
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Westmont, PA
Air quality
47
AQI
Good
+11 in 6hPeak ~56 @ 11 PM

AQI 47 (Good), driven by Ozone. AQI up 11 over the last 6 hours (gradual rise). Ozone at AQI 65 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.

PM 2.5Good
3.5μg/m³
PM 10Good
4μg/m³
NO₂Good
1μg/m³
OzoneDRIVERUnhealthy SG
116μg/m³
UV IndexModerate
4.0

What's driving it

Ozone × UV × Sky

Ozone at AQI 65 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.

Present
AQI 65
UV peak
3.6 at earlier today
Sky at peak
partly cloudy
Projected peak
AQI 65
Westmont, PA
Sky cover · visibility · 24h
Cloud cover
48%
MOSTLY CLEAR
100%0%−24h−18h−12h−6hnow

Visibility
93.2mi
UNLIMITED
103 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
20:17 UTC · Westmont, PA · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
20:17 UTC · Westmont, PA · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Westmont, PA
Satellite · infrared · animated
Westmont, PA
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Westmont, PA
Almanac · Wednesday, June 17
A summer fog for fair, a winter fog for rain.
Civil dawn
5:13 AM
Sunrise
1:45 AM
Daylight
15h 03m
Sunset
4:48 PM
Civil dusk
9:22 PM
Planting note
Stake and prune tomato suckers. Watch for squash vine borers.
Westmont, PA
The moon
Waxing Crescent
10% illuminated
Moonrise
8:12 AM
Moonset
10:53 PM
In sign
♌︎ Leo
Westmont, PA
Microseason
Jun 16–20

Honeysuckle sweetens the night

plant
Jan 146% of the yearDec 31

Read this microseason across nine climate regions →

Westmont at a glance

  • Today vs. normal: 74°F — typical for the season
  • Last frost: April 18 (climatological average for this latitude)
  • Microseason: Jun 16–20
  • Planting window: Stake and prune tomato suckers. Watch for squash vine borers.

16-Day Forecast — Westmont

  1. Wed75°54°40%
  2. Thu77°65°62%
  3. Fri70°56°6%
  4. Sat69°49°10%
  5. Sun70°52°51%
  6. Mon72°49°73%
  7. Tue77°47°32%
  8. Wed77°51°16%
  9. Thu74°53°28%
  10. Fri72°50°39%
  11. Sat66°57°31%
  12. Sun74°63°48%
  13. Mon70°61°65%
  14. Tue76°60°53%
  15. Wed80°60°48%
  16. Thu71°62°43%

Forecast data from Open-Meteo (CC BY 4.0).

Right now in the garden

Peak growing season

As of June 17, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.

SPC Convective Outlook

Storm Prediction Center — Westmont

SPC has placed Westmont in the Marginal Risk category for severe thunderstorms tomorrow.

  • TODAYTSTMGeneral Thunderstorms
  • TOMORROWMRGLMarginal Risk
  • DAY 3NONENo severe risk

Isolated severe storms possible. Limited threat for hail or damaging wind.

Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.

ZIP codes in Westmont

  • 15905

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.