Arapahoe, Colorado Weather
Sun climbs to its northern throne. Day 88 of spring. Read this microseason across nine climate regions →
Arapahoe weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast10%—82°49°—
- TuesdayJun 16Overcast——91°56°+9°
- WednesdayJun 17Overcast——94°71°+3°
- ThursdayJun 18Clear——82°57°-12°
- FridayJun 19Overcast19%—88°59°+6°
- SaturdayJun 20Partly Cloudy43%—99°67°+11°
- SundayJun 21Light Drizzle43%0.01″84°62°-15°
AQI 32 (Good), driven by PM2.5. AQI down 7 over the last 6 hours (gradual decline). PM2.5 at 7.7 µg/m³ (AQI 43) with a 0.69 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 7.7 µg/m³ (AQI 43) with a 0.69 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.69
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:29 AM
- Moonset
- 8:32 PM
- In sign
- ♊︎ Gemini
Sun climbs to its northern throne
Arapahoe at a glance
- Today vs. normal: 26°F below the seasonal normal for this latitude
- Last frost: April 9 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
15-Day Forecast — Arapahoe
- Mon83°50°10%
- Tue91°56°4%
- Wed94°71°0%
- Thu82°57°0%
- Fri88°59°19%
- Sat99°67°43%
- Sun84°62°43%
- Mon87°62°40%
- Tue88°65°28%
- Wed98°65°26%
- Thu101°72°22%
- Fri100°76°17%
- Sat100°73°27%
- Sun95°66°29%
- Mon66°61°25%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, 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 — Arapahoe
SPC has placed Arapahoe in the General Thunderstorms category for severe thunderstorms today.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- 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 Arapahoe
- 80802