Pontiac, Illinois Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Pontiac weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain89%2.9″84°71°—
- SundayJul 5Overcast19%—79°69°-5°
- MondayJul 6Overcast——79°64°0°
- TuesdayJul 7Overcast——81°60°+2°
- WednesdayJul 8Light Drizzle——83°65°+2°
- ThursdayJul 9Heavy Showers45%0.73″83°68°0°
- FridayJul 10Light Drizzle33%—77°62°-6°
AQI 42 (Good), driven by Ozone. AQI up 5 over the last 6 hours (gradual rise). Ozone at AQI 34. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
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 34. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 34
- UV peak
- 0.2 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 4
PM × Wind × Precip
PM2.5 at 4.9 µg/m³ (AQI 27) with a 0.92 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.92
- 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
- 11:13 PM
- Moonset
- 11:06 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Pontiac at a glance
- Today vs. normal: 73°F — typical for the season
- Last frost: April 21 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 61764
16-Day Forecast — Pontiac
- Sat84°71°89%
- Sun79°69°19%
- Mon79°64°5%
- Tue81°60°2%
- Wed83°65°4%
- Thu83°68°45%
- Fri77°62°33%
- Sat75°57°12%
- Sun77°56°8%
- Mon77°56°7%
- Tue81°61°7%
- Wed82°66°45%
- Thu80°65°30%
- Fri84°69°32%
- Sat87°75°33%
- Sun84°68°39%
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 — Pontiac
SPC has placed Pontiac in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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 Pontiac
- 61764