Aspen, Colorado Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
Aspen weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Partly Cloudy——81°49°—
- SundayJul 5Overcast——84°59°+3°
- MondayJul 6Overcast——87°61°+3°
- TuesdayJul 7Light Drizzle42%—85°57°-2°
- WednesdayJul 8Overcast30%—86°59°+1°
- ThursdayJul 9Overcast26%—85°56°-1°
- FridayJul 10Overcast——86°57°+1°
AQI 86 (Moderate), driven by Ozone. AQI down 7 over the last 6 hours (gradual decline). Ozone at AQI 48 now. With UV 0.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 8 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 48 now. With UV 0.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 8 around 1 PM.
- Present
- AQI 48
- UV peak
- 0.0 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 8
PM × Wind × Precip
PM2.5 at 7.9 µg/m³ (AQI 44) with a 0.85 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.85
- Wind
- light
- 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
- 11:26 PM
- Moonset
- 11:22 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Aspen at a glance
- Today vs. normal: 3°F below the seasonal normal for this latitude
- Last frost: April 11 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 81611, 81612
16-Day Forecast — Aspen
- Sat81°49°1%
- Sun84°59°2%
- Mon87°61°6%
- Tue85°57°42%
- Wed86°59°30%
- Thu85°56°26%
- Fri86°57°5%
- Sat89°54°7%
- Sun96°57°11%
- Mon94°61°20%
- Tue99°62°24%
- Wed96°62°52%
- Thu95°60°61%
- Fri96°57°64%
- Sat88°58°65%
- Sun88°55°39%
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 — Aspen
SPC includes Aspen in the general thunderstorm area tomorrow — no severe risk, but storms are possible.
- TODAYNONENo severe risk
- 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 Aspen
- 81611