Simla, Colorado Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
Simla weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Light Drizzle11%—88°57°—
- MondayJul 6Overcast10%—91°62°+3°
- TuesdayJul 7Overcast32%—92°65°+1°
- WednesdayJul 8Light Drizzle58%—92°61°0°
- ThursdayJul 9Light Drizzle66%—91°63°-1°
- FridayJul 10Light Drizzle33%0.04″92°64°+1°
- SaturdayJul 11Clear——91°69°-1°
AQI 50 (Good), driven by PM2.5. AQI down 33 over the last 6 hours — air quality is improving sharply. PM2.5 at 8.3 µg/m³, PM10 at 10.5 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 40 now. With UV 3.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 13 around 1 PM.
- Present
- AQI 40
- UV peak
- 3.3 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 13
PM × Wind × Precip
PM2.5 at 8.3 µg/m³, PM10 at 10.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.79
- 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
- 11:14 PM
- Moonset
- 11:11 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Simla at a glance
- Today vs. normal: 12°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 code: 80835
15-Day Forecast — Simla
- Sun87°57°11%
- Mon91°62°10%
- Tue92°65°32%
- Wed92°61°58%
- Thu91°63°66%
- Fri92°64°33%
- Sat91°69°9%
- Sun91°65°2%
- Mon98°67°4%
- Tue100°70°13%
- Wed101°71°21%
- Thu96°65°42%
- Fri93°66°45%
- Sat94°66°38%
- Sun92°69°42%
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 — Simla
SPC includes Simla 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 Simla
- 80835