Riverton, Wyoming Weather
Pikas hayfeeding in granite peaks. Day 77 of spring. Read this microseason across nine climate regions →
Riverton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——84°58°—
- FridayJun 5Clear——87°55°+3°
- SaturdayJun 6Overcast——94°61°+7°
- SundayJun 7Overcast31%—84°58°-10°
- MondayJun 8Overcast19%—88°50°+4°
- TuesdayJun 9Overcast——91°65°+3°
- WednesdayJun 10Light Drizzle14%0.01″82°58°-9°
PM2.5 at 9.9 µg/m³, PM10 at 34.2 µg/m³ — typical background levels with no transport signature. AQI down 8 over the last 6 hours (steady decline since this morning).
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 36 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 16 by mid-afternoon.
- Present
- AQI 36
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 16
PM × Wind × Precip
PM2.5 at 9.9 µg/m³, PM10 at 34.2 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.29
- Wind
- light
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:54 AM
- Moonset
- 3:09 PM
- In sign
- ♑︎ Capricorn
Pikas hayfeeding in granite peaks
Riverton at a glance
- Today vs. normal: 9°F below the seasonal normal for this latitude
- Last frost: May 4 (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
Warm-season window is open
As of June 4, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.