Lebanon, Illinois Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Lebanon weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Showers59%0.24″89°71°—
- SundayJul 5Heavy Rain22%0.82″88°67°-1°
- MondayJul 6Overcast——86°70°-2°
- TuesdayJul 7Clear——84°65°-2°
- WednesdayJul 8Overcast——92°66°+8°
- ThursdayJul 9Light Drizzle40%—88°74°-4°
- FridayJul 10Thunderstorm40%—88°71°0°
AQI 48 (Good), driven by PM2.5. AQI down 42 over the last 6 hours — air quality is improving sharply. PM2.5 at 11.8 µg/m³ (AQI 56) with a 0.86 fine-to-coarse ratio and 5 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
PM × Wind × Precip
PM2.5 at 11.8 µg/m³ (AQI 56) with a 0.86 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.86
- Wind
- light
- 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
- 11:16 PM
- Moonset
- 11:12 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Lebanon at a glance
- Today vs. normal: 71°F — typical for the season
- Last frost: April 8 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 62254
16-Day Forecast — Lebanon
- Sat89°71°59%
- Sun88°67°22%
- Mon86°70°9%
- Tue84°65°8%
- Wed92°66°6%
- Thu88°74°40%
- Fri88°71°40%
- Sat81°69°19%
- Sun80°63°9%
- Mon82°59°4%
- Tue89°64°2%
- Wed91°71°5%
- Thu90°68°10%
- Fri100°67°19%
- Sat97°77°22%
- Sun98°77°25%
Forecast data from Open-Meteo (CC BY 4.0).
Dedicated forecasts for Lebanon: hourly weather (72 hours) · 14-day extended forecast
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 — Lebanon
SPC has placed Lebanon in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
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 Lebanon
- 62254