Alamosa, Colorado Weather
Heat hardens the dust. Day 77 of spring. Read this microseason across nine climate regions →
Alamosa weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——79°42°—
- FridayJun 5Overcast——84°44°+5°
- SaturdayJun 6Light Drizzle22%0.01″81°50°-3°
- SundayJun 7Overcast14%—81°50°0°
- MondayJun 8Overcast——83°50°+2°
- TuesdayJun 9Drizzle—0.05″84°53°+1°
- WednesdayJun 10Heavy Drizzle—0.22″80°52°-4°
Ozone at AQI 65 now. AQI up 12 over the last 6 hours (gradual rise). With UV 7.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 61 by mid-afternoon.
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 65 now. With UV 7.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 61 by mid-afternoon.
- Present
- AQI 65
- UV peak
- 7.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 61
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
- 5:26 AM
- Moonset
- 3:15 PM
- In sign
- ♒︎ Aquarius
Heat hardens the dust
Alamosa at a glance
- Today vs. normal: 79°F — typical for the season
- Last frost: April 1 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 4, 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 — Alamosa
SPC has placed Alamosa in the General Thunderstorms category for severe thunderstorms today.
- 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.