Dundas, Illinois Weather
Sun climbs to its northern throne. Day 88 of spring. Read this microseason across nine climate regions →
Dundas weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Mostly Clear——76°60°—
- TuesdayJun 16Overcast30%—81°57°+5°
- WednesdayJun 17T-storm w/ Hail70%—87°58°+6°
- ThursdayJun 18Thunderstorm70%0.28″76°65°-11°
- FridayJun 19Light Drizzle17%—78°57°+2°
- SaturdayJun 20Overcast——77°56°-1°
- SundayJun 21Thunderstorm40%—83°60°+6°
AQI 31 (Good), driven by Ozone. AQI up 6 over the last 6 hours (gradual rise). Ozone at AQI 47 now. With UV 8.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 51 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 47 now. With UV 8.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 51 around 1 PM.
- Present
- AQI 47
- UV peak
- 8.1 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 51
PM × Wind × Precip
PM2.5 at 4.8 µg/m³, PM10 at 5.2 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.92
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 5:30 AM
- Moonset
- 8:33 PM
- In sign
- ♋︎ Cancer
Sun climbs to its northern throne
Dundas at a glance
- Today vs. normal: 75°F — typical for the season
- Last frost: April 9 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Dundas
- Mon76°60°0%
- Tue81°57°30%
- Wed87°58°70%
- Thu76°65°70%
- Fri78°57°17%
- Sat77°56°8%
- Sun83°60°40%
- Mon85°67°46%
- Tue78°69°25%
- Wed80°64°12%
- Thu80°67°10%
- Fri81°61°19%
- Sat74°63°39%
- Sun89°70°31%
- Mon79°66°35%
- Tue78°62°36%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, 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 — Dundas
SPC has placed Dundas in the Slight Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWMRGLMarginal Risk
- DAY 3SLGTSlight Risk
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 Dundas
- 62425