Calhan, Colorado Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
Calhan weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Light Drizzle—0.01″87°60°—
- MondayJul 6Overcast13%—89°65°+2°
- TuesdayJul 7Light Drizzle36%0.02″90°62°+1°
- WednesdayJul 8Light Showers60%0.15″90°61°0°
- ThursdayJul 9Light Rain60%0.16″88°60°-2°
- FridayJul 10Light Drizzle30%0.04″90°60°+2°
- SaturdayJul 11Clear——89°67°-1°
AQI 48 (Good), driven by PM2.5. AQI down 39 over the last 6 hours — air quality is improving sharply. PM2.5 at 7.8 µg/m³, PM10 at 10.0 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 43 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 19 around 1 PM.
- Present
- AQI 43
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 19
PM × Wind × Precip
PM2.5 at 7.8 µg/m³, PM10 at 10.0 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.78
- 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
- 11:15 PM
- Moonset
- 11:12 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Calhan at a glance
- Today vs. normal: 13°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: 80808
15-Day Forecast — Calhan
- Sun87°60°9%
- Mon89°65°13%
- Tue90°62°36%
- Wed90°61°60%
- Thu88°60°60%
- Fri90°60°30%
- Sat89°67°7%
- Sun88°63°2%
- Mon95°64°5%
- Tue97°68°15%
- Wed98°70°24%
- Thu93°65°46%
- Fri91°65°48%
- Sat92°63°42%
- Sun90°66°45%
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 — Calhan
SPC includes Calhan 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 Calhan
- 80808