Mercer, Missouri Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Mercer weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Showers50%0.20″82°69°—
- SundayJul 5Overcast15%—84°68°+2°
- MondayJul 6Light Drizzle——84°68°0°
- TuesdayJul 7Overcast——85°65°+1°
- WednesdayJul 8Light Showers24%—89°65°+4°
- ThursdayJul 9Thunderstorm48%—84°71°-5°
- FridayJul 10Light Drizzle26%—83°68°-1°
AQI 39 (Good), driven by PM2.5. AQI up 8 over the last 6 hours (gradual rise). PM2.5 at 9.6 µg/m³, PM10 at 13.1 µg/m³ — typical background levels with no transport signature.
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 38. Overcast through the UV peak window (cloud cover ~69%) — afternoon ozone should stay flat.
- Present
- AQI 38
- UV peak
- 0.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 5
PM × Wind × Precip
PM2.5 at 9.6 µg/m³, PM10 at 13.1 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.73
- Wind
- calm
- Recent rain
- 1h 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:33 PM
- Moonset
- 11:26 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Mercer at a glance
- Today vs. normal: 10°F above the seasonal normal for this latitude
- Last frost: April 19 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 64661
16-Day Forecast — Mercer
- Sat82°69°50%
- Sun84°68°15%
- Mon84°68°1%
- Tue85°65°0%
- Wed89°65°24%
- Thu84°71°48%
- Fri83°68°26%
- Sat78°63°6%
- Sun79°61°6%
- Mon83°60°4%
- Tue86°63°5%
- Wed87°68°20%
- Thu90°70°20%
- Fri94°74°16%
- Sat95°72°19%
- Sun89°70°23%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 — Mercer
SPC includes Mercer in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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 Mercer
- 64661