Florissant, Colorado Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
Florissant weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——83°51°—
- MondayJul 6Overcast35%—83°53°0°
- TuesdayJul 7Rain88%0.16″86°55°+3°
- WednesdayJul 8Light Drizzle62%0.01″87°52°+1°
- ThursdayJul 9Light Drizzle49%—83°52°-4°
- FridayJul 10Light Drizzle33%0.01″84°51°+1°
- SaturdayJul 11Clear——89°53°+5°
AQI 116 (Unhealthy for Sensitive Groups), driven by PM2.5. AQI up 17 in the last 6 hours — air quality is degrading. PM2.5 at 17.1 µg/m³, PM10 at 20.0 µg/m³ — typical background levels with no transport signature.
CAUTION Sensitive groups (children, elderly, respiratory conditions) should limit prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 66 now. With UV 3.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 21 around 1 PM.
- Present
- AQI 66
- UV peak
- 3.3 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 21
PM × Wind × Precip
PM2.5 at 17.1 µg/m³, PM10 at 20.0 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.86
- Wind
- breezy
- Recent rain
- 0h 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
- 11:19 PM
- Moonset
- 11:16 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Florissant at a glance
- Today vs. normal: 14°F below the seasonal normal for this latitude
- Last frost: April 10 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 80816
15-Day Forecast — Florissant
- Sun83°51°8%
- Mon83°53°35%
- Tue86°55°88%
- Wed87°52°62%
- Thu83°52°49%
- Fri84°51°33%
- Sat89°53°7%
- Sun87°55°3%
- Mon94°56°10%
- Tue91°59°26%
- Wed94°56°49%
- Thu91°56°61%
- Fri87°53°69%
- Sat91°56°68%
- Sun85°55°68%
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 — Florissant
SPC includes Florissant in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
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 Florissant
- 80816