Flagstaff, Arizona Weather
The monsoon settles in. Day 15 of summer. Read this microseason across nine climate regions →
Flagstaff weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——85°59°—
- MondayJul 6Overcast——86°61°+1°
- TuesdayJul 7Overcast——91°65°+5°
- WednesdayJul 8Light Drizzle——91°65°0°
- ThursdayJul 9Partly Cloudy——91°64°0°
- FridayJul 10Partly Cloudy——92°61°+1°
- SaturdayJul 11Mostly Clear11%—96°63°+4°
AQI 151 (Unhealthy), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 104.8 µg/m³ (AQI 186) with a 0.92 fine-to-coarse ratio and 1 mph wind — combustion smoke trapped in calm air, not road dust.
LIMIT OUTDOORS Limit prolonged outdoor exertion. Sensitive groups should avoid outdoor exertion. Consider rescheduling outdoor activities until AQI improves.
What's driving it
Ozone × UV × Sky
Ozone at AQI 31. Overcast through the UV peak window (cloud cover ~86%) — afternoon ozone should stay flat.
- Present
- AQI 31
- UV peak
- 0.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 4
PM × Wind × Precip
PM2.5 at 104.8 µg/m³ (AQI 186) with a 0.92 fine-to-coarse ratio and 1 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.92
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:43 PM
- Moonset
- 10:44 AM
- In sign
- ♓︎ Pisces
The monsoon settles in
Flagstaff at a glance
- Today vs. normal: 11°F below the seasonal normal for this latitude
- Last frost: March 18 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 86001, 86003, 86004, 86005, 86011
16-Day Forecast — Flagstaff
- Sun84°58°4%
- Mon86°61°4%
- Tue91°65°4%
- Wed91°65°3%
- Thu91°64°1%
- Fri92°61°4%
- Sat96°63°11%
- Sun96°61°11%
- Mon90°63°20%
- Tue90°63°34%
- Wed84°60°33%
- Thu86°62°32%
- Fri94°63°42%
- Sat98°69°42%
- Sun97°69°23%
- Mon94°65°23%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Flagstaff
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 — Flagstaff
SPC includes Flagstaff in the general thunderstorm area tomorrow — no severe risk, but storms are possible.
- TODAYNONENo severe risk
- 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 Flagstaff
- 86011
- 86005
- 86004
- 86001
- 86002