St. Ann, Missouri Weather
Sun climbs to its northern throne. Day 88 of spring. Read this microseason across nine climate regions →
St. Ann weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——80°58°—
- TuesdayJun 16Overcast47%—83°61°+3°
- WednesdayJun 17T-storm w/ Hail85%—97°65°+14°
- ThursdayJun 18Drizzle85%—74°64°-23°
- FridayJun 19Overcast——80°61°+6°
- SaturdayJun 20Overcast16%—88°65°+8°
- SundayJun 21Showers49%1.6″75°65°-13°
AQI 31 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 7.1 µg/m³ (AQI 39) with a 0.96 fine-to-coarse ratio and 4 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 7.1 µg/m³ (AQI 39) with a 0.96 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.96
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:40 AM
- Moonset
- 8:43 PM
- In sign
- ♋︎ Cancer
Sun climbs to its northern throne
St. Ann at a glance
- Today vs. normal: 13°F below the seasonal normal for this latitude
- Last frost: April 8 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — St. Ann
- Mon80°58°0%
- Tue83°61°47%
- Wed97°65°85%
- Thu74°64°85%
- Fri80°61°6%
- Sat88°65°16%
- Sun75°65°49%
- Mon79°65°52%
- Tue73°62°17%
- Wed82°61°14%
- Thu89°68°11%
- Fri96°73°25%
- Sat100°77°35%
- Sun100°78°26%
- Mon87°75°19%
- Tue94°72°29%
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 — St. Ann
SPC has placed St. Ann in the Enhanced Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- 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 St. Ann
- 63074