St. Paul, Iowa Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
St. Paul weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle24%—85°69°—
- SundayJul 5Overcast11%—85°69°0°
- MondayJul 6Clear——81°68°-4°
- TuesdayJul 7Mostly Clear——84°65°+3°
- WednesdayJul 8Showers15%—87°65°+3°
- ThursdayJul 9Thunderstorm43%0.21″83°68°-4°
- FridayJul 10Light Drizzle28%—81°68°-2°
AQI 42 (Good), driven by Ozone. AQI up 9 over the last 6 hours (gradual rise). Ozone at AQI 31 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 7 around 1 PM.
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 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 7 around 1 PM.
- Present
- AQI 31
- UV peak
- 0.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 7
PM × Wind × Precip
PM2.5 at 5.0 µg/m³ (AQI 28) with a 0.88 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.88
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:25 PM
- Moonset
- 11:18 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
St. Paul at a glance
- Today vs. normal: 5°F above the seasonal normal for this latitude
- Last frost: April 21 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — St. Paul
- Sat85°69°24%
- Sun85°69°11%
- Mon81°68°2%
- Tue84°65°1%
- Wed87°65°15%
- Thu83°68°43%
- Fri81°68°28%
- Sat75°65°7%
- Sun77°58°15%
- Mon80°59°7%
- Tue84°63°6%
- Wed86°70°14%
- Thu91°70°15%
- Fri90°73°17%
- Sat92°74°16%
- Sun86°68°26%
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 — St. Paul
SPC includes St. Paul 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 St. Paul
- 52657