Arapahoe, Colorado Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Arapahoe weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast14%—94°61°—
- MondayJul 6Overcast——97°65°+3°
- TuesdayJul 7Light Drizzle21%—99°71°+2°
- WednesdayJul 8Showers34%0.17″97°64°-2°
- ThursdayJul 9Showers52%0.02″94°69°-3°
- FridayJul 10Overcast44%—93°66°-1°
- SaturdayJul 11Overcast13%—97°72°+4°
AQI 44 (Good), driven by PM2.5. AQI down 31 over the last 6 hours — air quality is improving sharply. PM2.5 at 11.4 µg/m³ (AQI 55), ratio 0.58 with 7 mph wind — characteristic of long-range haze transport rather than a local source.
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 33 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 15 around 1 PM.
- Present
- AQI 33
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 15
PM × Wind × Precip
PM2.5 at 11.4 µg/m³ (AQI 55), ratio 0.58 with 7 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.58
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- transport
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
- 11:06 PM
- Moonset
- 11:04 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Arapahoe at a glance
- Today vs. normal: 6°F below the seasonal normal for this latitude
- Last frost: April 9 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 80802
15-Day Forecast — Arapahoe
- Sun94°62°14%
- Mon97°65°5%
- Tue99°71°21%
- Wed97°64°34%
- Thu94°69°52%
- Fri93°66°44%
- Sat97°72°13%
- Sun95°70°2%
- Mon101°72°2%
- Tue106°75°8%
- Wed107°77°19%
- Thu102°72°28%
- Fri94°73°23%
- Sat96°69°13%
- Sun103°76°29%
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 — Arapahoe
SPC includes Arapahoe 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 Arapahoe
- 80802