Sibley, Illinois Weather
Heat settles and the rain begins. Day 89 of spring. Read this microseason across nine climate regions →
Sibley weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 16Thunderstorm23%—74°56°—
- WednesdayJun 17T-storm w/ Hvy Hail93%0.25″80°54°+6°
- ThursdayJun 18Light Drizzle65%—69°58°-11°
- FridayJun 19Overcast——69°54°0°
- SaturdayJun 20Overcast——75°54°+6°
- SundayJun 21Light Rain53%0.44″70°58°-5°
- MondayJun 22Overcast53%—69°54°-1°
AQI 30 (Good), driven by Ozone. AQI down 13 over the last 6 hours (gradual decline). Ozone at AQI 31 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 14 around 1 PM.
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 31 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 14 around 1 PM.
- Present
- AQI 31
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 14
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).
Cut your thistles before St. John, you will have two instead of one.
- Moonrise
- 6:35 AM
- Moonset
- 9:44 PM
- In sign
- ♋︎ Cancer
Heat settles and the rain begins
Sibley at a glance
- Today vs. normal: 16°F below the seasonal normal for this latitude
- Last frost: April 20 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
15-Day Forecast — Sibley
- Tue74°56°23%
- Wed80°54°93%
- Thu69°58°65%
- Fri69°54°4%
- Sat75°54°7%
- Sun70°58°53%
- Mon69°54°53%
- Tue74°52°17%
- Wed78°57°12%
- Thu80°62°16%
- Fri87°67°19%
- Sat90°74°42%
- Sun89°74°42%
- Mon88°73°35%
- Tue90°72°42%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 16, 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 — Sibley
SPC has placed Sibley in the Moderate Risk category for severe thunderstorms tomorrow.
- TODAYMRGLMarginal Risk
- TOMORROWMDTModerate Risk
- DAY 3ENHEnhanced Risk
Widespread severe storms expected. Tornadoes (some strong), large hail, and damaging wind gusts are likely. Stay weather-aware and review your sheltering plan.
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 Sibley
- 61773