Sundown, Missouri Weather
Heat settles and the rain begins. Day 91 of spring. Read this microseason across nine climate regions →
Sundown weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 18Light Drizzle34%—86°70°—
- FridayJun 19Rain17%0.29″84°64°-2°
- SaturdayJun 20Overcast44%—88°60°+4°
- SundayJun 21T-storm w/ Hvy Hail79%0.61″82°69°-6°
- MondayJun 22Heavy Showers79%1.1″74°66°-8°
- TuesdayJun 23Drizzle26%0.01″82°66°+8°
- WednesdayJun 24Overcast16%—84°64°+2°
AQI 38 (Good), driven by PM2.5. AQI down 5 over the last 6 hours (gradual decline). PM2.5 at 5.6 µg/m³ (AQI 31) with a 0.93 fine-to-coarse ratio and 3 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 5.6 µg/m³ (AQI 31) with a 0.93 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.93
- Wind
- calm
- 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).
Cut your thistles before St. John, you will have two instead of one.
- Moonrise
- 9:36 AM
- Moonset
- 11:18 PM
- In sign
- ♌︎ Leo
Heat settles and the rain begins
Sundown at a glance
- Today vs. normal: 76°F — typical for the season
- Last frost: March 26 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
15-Day Forecast — Sundown
- Thu86°70°34%
- Fri84°64°17%
- Sat88°60°44%
- Sun82°69°79%
- Mon74°66°79%
- Tue82°66°26%
- Wed84°64°16%
- Thu86°63°29%
- Fri83°66°22%
- Sat94°66°20%
- Sun88°65°16%
- Mon94°69°46%
- Tue93°71°41%
- Wed94°71°35%
- Thu96°71°23%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 18, 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 — Sundown
SPC has placed Sundown in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWNONENo severe risk
- 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 Sundown
- 65761