Arlington Heights, Pennsylvania Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Arlington Heights weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Heavy Rain85%2.8″86°69°—
- MondayJul 6Heavy Rain74%0.84″72°66°-14°
- TuesdayJul 7Light Drizzle67%0.03″66°61°-6°
- WednesdayJul 8Overcast22%—83°58°+17°
- ThursdayJul 9Drizzle27%—89°63°+6°
- FridayJul 10Drizzle36%0.13″72°66°-17°
- SaturdayJul 11Foggy33%—83°59°+11°
AQI 45 (Good), driven by PM2.5. AQI up 10 over the last 6 hours (gradual rise). PM2.5 at 8.4 µg/m³ (AQI 47) with a 0.94 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
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 46 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 46
- UV peak
- 2.0 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 46
PM × Wind × Precip
PM2.5 at 8.4 µg/m³ (AQI 47) with a 0.94 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.94
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:18 PM
- Moonset
- 11:10 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Arlington Heights at a glance
- Today vs. normal: 13°F above the seasonal normal for this latitude
- Last frost: April 22 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Arlington Heights
- Sun86°69°85%
- Mon72°66°74%
- Tue66°61°67%
- Wed83°58°22%
- Thu89°63°27%
- Fri72°66°36%
- Sat83°59°33%
- Sun76°61°20%
- Mon81°62°19%
- Tue67°61°18%
- Wed71°61°19%
- Thu77°59°30%
- Fri87°61°29%
- Sat85°62°26%
- Sun81°63°27%
- Mon67°65°29%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 — Arlington Heights
SPC has placed Arlington Heights in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- 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 Arlington Heights
- 18360
- 18301