Waterloo, Indiana Weather
Honeysuckle sweetens the night. Day 89 of spring. Read this microseason across nine climate regions →
Waterloo weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 16Rain47%0.28″75°52°—
- WednesdayJun 17Thunderstorm100%1.7″71°54°-4°
- ThursdayJun 18Light Drizzle100%—67°56°-4°
- FridayJun 19Mostly Clear——67°52°0°
- SaturdayJun 20Light Drizzle11%—71°50°+4°
- SundayJun 21Drizzle47%0.17″60°57°-11°
- MondayJun 22Overcast47%—69°53°+9°
AQI 38 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 31. Overcast through the UV peak window (cloud cover ~95%) — 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 31. Overcast through the UV peak window (cloud cover ~95%) — afternoon ozone should stay flat.
- Present
- AQI 31
- UV peak
- 3.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 7
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
- 7:17 AM
- Moonset
- 10:33 PM
- In sign
- ♋︎ Cancer
Honeysuckle sweetens the night
Waterloo at a glance
- Today vs. normal: 19°F below the seasonal normal for this latitude
- Last frost: April 25 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
15-Day Forecast — Waterloo
- Tue75°53°47%
- Wed71°54°100%
- Thu67°56°100%
- Fri67°52°2%
- Sat71°50°11%
- Sun60°57°47%
- Mon69°53°47%
- Tue73°53°16%
- Wed76°56°14%
- Thu79°60°14%
- Fri84°61°29%
- Sat90°72°32%
- Sun90°73°48%
- Mon87°73°46%
- Tue89°73°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 — Waterloo
SPC has placed Waterloo in the Enhanced Risk category for severe thunderstorms tomorrow.
- TODAYMRGLMarginal Risk
- TOMORROWENHEnhanced Risk
- DAY 3ENHEnhanced Risk
Numerous severe storms likely. Tornadoes, large hail, and damaging wind gusts possible across the area. Track NWS warnings if storms develop.
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 Waterloo
- 46793