Summit, Arizona Weather
Heat hardens the dust. Day 76 of spring. Read this microseason across nine climate regions →
Summit weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast13%—101°68°—
- ThursdayJun 4Overcast——100°70°-1°
- FridayJun 5Clear——99°70°-1°
- SaturdayJun 6Overcast——99°71°0°
- SundayJun 7Overcast——98°71°-1°
- MondayJun 8Overcast——98°68°0°
- TuesdayJun 9Mostly Clear——103°69°+5°
Ozone at AQI 56 now. AQI up 11 over the last 6 hours (gradual rise). With UV 10 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 75 by mid-afternoon.
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 56 now. With UV 10 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 75 by mid-afternoon.
- Present
- AQI 56
- UV peak
- 10.1 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 75
PM × Wind × Precip
PM2.5 at 4.7 µg/m³, PM10 at 15.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.31
- 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).
The higher the clouds, the finer the weather.
- Moonrise
- 4:51 AM
- Moonset
- 2:52 PM
- In sign
- ♑︎ Capricorn
Heat hardens the dust
Summit at a glance
- Today vs. normal: 16°F above the seasonal normal for this latitude
- Last frost: February 27 (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
Peak growing season
As of June 3, 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 — Summit
SPC has placed Summit in the General Thunderstorms category for severe thunderstorms today.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- 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.