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
- TodayJun 17Light Drizzle40%0.01″75°54°—
- ThursdayJun 18Heavy Rain62%0.61″77°64°+2°
- FridayJun 19Light Drizzle——70°56°-7°
- SaturdayJun 20Light Drizzle10%—69°49°-1°
- SundayJun 21Heavy Rain51%1.1″70°52°+1°
- MondayJun 22Heavy Rain73%0.68″72°49°+2°
- TuesdayJun 23Partly Cloudy32%—77°47°+5°
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.
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
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).








































A summer fog for fair, a winter fog for rain.
- Moonrise
- 8:12 AM
- Moonset
- 10:53 PM
- In sign
- ♌︎ Leo
Honeysuckle sweetens the night
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
- Wed75°54°40%
- Thu77°65°62%
- Fri70°56°6%
- Sat69°49°10%
- Sun70°52°51%
- Mon72°49°73%
- Tue77°47°32%
- Wed77°51°16%
- Thu74°53°28%
- Fri72°50°39%
- Sat66°57°31%
- Sun74°63°48%
- Mon70°61°65%
- Tue76°60°53%
- Wed80°60°48%
- 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