Fort Defiance, Arizona Weather
The monsoon settles in. Day 15 of summer. Read this microseason across nine climate regions →
Fort Defiance weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——85°55°—
- MondayJul 6Overcast11%—87°59°+2°
- TuesdayJul 7Light Drizzle19%—90°59°+3°
- WednesdayJul 8Overcast——92°61°+2°
- ThursdayJul 9Light Drizzle——92°65°0°
- FridayJul 10Overcast——93°67°+1°
- SaturdayJul 11Partly Cloudy——98°63°+5°
AQI 41 (Good), driven by PM2.5. AQI down 11 over the last 6 hours (gradual decline). PM2.5 at 11.0 µg/m³ (AQI 55), ratio 0.64 with 8 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 38. Overcast through the UV peak window (cloud cover ~89%) — afternoon ozone should stay flat.
- Present
- AQI 38
- UV peak
- 0.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 5
PM × Wind × Precip
PM2.5 at 11.0 µg/m³ (AQI 55), ratio 0.64 with 8 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.64
- 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
- 11:33 PM
- Moonset
- 11:33 AM
- In sign
- ♓︎ Pisces
The monsoon settles in
Fort Defiance at a glance
- Today vs. normal: 19°F below the seasonal normal for this latitude
- Last frost: March 21 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 86504
16-Day Forecast — Fort Defiance
- Sun85°55°3%
- Mon87°59°11%
- Tue90°59°19%
- Wed92°61°4%
- Thu92°65°1%
- Fri93°67°2%
- Sat98°63°5%
- Sun97°61°7%
- Mon94°63°9%
- Tue92°64°15%
- Wed94°61°20%
- Thu95°63°34%
- Fri97°64°44%
- Sat97°67°45%
- Sun96°64°27%
- Mon95°64°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 — Fort Defiance
SPC includes Fort Defiance 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 Fort Defiance
- 86504