Lemay, Missouri Weather
Heat settles and the rain begins. Day 90 of spring. Read this microseason across nine climate regions →
Lemay weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 16Overcast32%—80°58°—
- WednesdayJun 17Thunderstorm29%—93°64°+13°
- ThursdayJun 18Light Drizzle22%0.02″80°65°-13°
- FridayJun 19Overcast——83°61°+3°
- SaturdayJun 20Overcast16%—83°61°0°
- SundayJun 21Showers66%0.15″79°66°-4°
- MondayJun 22Overcast66%—76°61°-3°
AQI 46 (Good), driven by PM2.5. AQI up 7 over the last 6 hours (gradual rise). PM2.5 at 7.2 µg/m³ (AQI 40) with a 0.90 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
Ozone × UV × Sky
Ozone at AQI 40 now. With UV 0.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 10 around 1 PM.
- Present
- AQI 40
- UV peak
- 0.1 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 10
PM × Wind × Precip
PM2.5 at 7.2 µg/m³ (AQI 40) with a 0.90 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.90
- 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
- 8:06 AM
- Moonset
- 10:33 PM
- In sign
- ♋︎ Cancer
Heat settles and the rain begins
Lemay at a glance
- Today vs. normal: 74°F — typical for the season
- Last frost: April 7 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
Right now in the garden
Peak growing season
As of June 17, 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 — Lemay
SPC has placed Lemay in the Enhanced Risk category for severe thunderstorms tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWENHEnhanced Risk
- DAY 3TSTMGeneral Thunderstorms
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 Lemay
- 63125