San Juan County, Washington, United States

Last updated: 6:28 PM CDT  ·  Refresh
23°C
Feels like 23°
Mostly Clear
▲ 27°  /  ▼ 14°
Wind
5 mph NNW
Humidity
52%
Dew Point
11°
Pressure
29.97 inHg
Visibility
10 mi
UV Index
7.7
Cloud Cover
20%
Sunrise
5:10 AM
Sunset
9:18 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: San Juan County is currently mostly clear at 24°C. Dry conditions are expected through the next 24 hours. Sunrise: 5:10AM · Sunset: 9:18PM.

Alerts

No active alerts for this location.
27 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
11%
5 PM
27°
29%
6 PM
27°
29%
7 PM
26°
21%
8 PM
24°
21%
9 PM
19°
21%
10 PM
18°
15%
11 PM
18°
3%
12 AM
17°
3%
1 AM
16°
3%
2 AM
16°
3%
3 AM
15°
3%
4 AM
14°
3%
5 AM
16°
3%
6 AM
16°
3%
7 AM
17°
3%
8 AM
18°
3%
9 AM
21°
3%
10 AM
21°
3%
11 AM
23°
3%
12 PM
23°
3%
1 PM
23°
3%
2 PM
24°
3%
3 PM
24°
3%
7-Day Forecast
Today
27° 14°
Rain, 21% chance.
Wed
24° 14°
Mostly Cloudy.
Thu
21° 12°
Rain, 69% chance.
Fri
20° 13°
Rain, 76% chance.
Sat
19° 12°
Clear with a 39% chance of rain.
Sun
19° 13°
Clear.
Mon
19° 14°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 23° Mostly Clear 11% 5 mph NNW 52%
5 PM 27° Mostly Clear 29% 5 mph NNW 50%
6 PM 27° Rain 29% 4 mph NW 52%
7 PM 26° Rain 21% 4 mph WNW 55%
8 PM 24° Rain 21% 3 mph WSW 60%
9 PM 19° Rain 21% 3 mph SW 64%
10 PM 18° Drizzle 15% 3 mph SSW 66%
11 PM 18° Clear 3% 2 mph S 67%
12 AM 17° Mostly Clear 3% 2 mph W 68%
1 AM 16° Partly Cloudy 3% 3 mph N 68%
2 AM 16° Mostly Cloudy 3% 3 mph N 69%
3 AM 15° Mostly Cloudy 3% 3 mph NW 72%
4 AM 14° Overcast 3% 2 mph WSW 75%
5 AM 16° Overcast 3% 2 mph SW 76%
6 AM 16° Overcast 3% 2 mph SW 75%
7 AM 17° Overcast 3% 3 mph SW 73%
8 AM 18° Overcast 3% 3 mph WSW 70%
9 AM 21° Mostly Cloudy 3% 3 mph SW 68%
10 AM 21° Partly Cloudy 3% 3 mph SW 65%
11 AM 23° Partly Cloudy 3% 3 mph SW 64%
12 PM 23° Partly Cloudy 3% 4 mph SW 64%
1 PM 23° Partly Cloudy 3% 5 mph SW 64%
2 PM 24° Partly Cloudy 3% 5 mph SW 62%
3 PM 24° Partly Cloudy 3% 6 mph SW 61%
15-Day Forecast
Today
6/23
Rain
21%
14°
27°
Wed
6/24
Mostly Cloudy
3%
14°
24°
Thu
6/25
Rain
69%
12°
21°
Fri
6/26
Rain
76%
13°
20°
Sat
6/27
Clear
39%
12°
19°
Sun
6/28
Clear
13%
13°
19°
Mon
6/29
Clear
13%
14°
19°
Tue
6/30
Clear
51%
13°
19°
Wed
7/1
Clear
41%
13°
19°
Thu
7/2
Clear
41%
12°
20°
Fri
7/3
Rain
40%
14°
19°
Sat
7/4
Rain
36%
14°
20°
Sun
7/5
Clear
38%
14°
21°
Mon
7/6
Clear
20%
14°
21°
Tue
7/7
Clear
20%
14°
21°
27
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
21 AQI 3.8 µg/m³
O3
Ground-level ozone
Dominant
27 AQI 30 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 27 Good 27 21
Thu 26 Good 24 26
Fri 24 Good 24 24
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Tue Jun 23, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE21 J/kg
MUCAPE33 J/kg
SBCIN-9636 J/kg
MLCIN0 J/kg
Lifted Index1.2
Kinematics
0–6 km Shear9 kt
0–1 km Shear7 kt
Eff. Shear—
0–1 km SRH-4
0–3 km SRH-19
Eff. SRH—
Storm Motion121° @ 14 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado-0.0
STP (eff)—
Supercell—
K-Index30.7
Thermo & Levels
PWAT0.87 in
0–3 km LR6.5 °C/km
700–500 LR7.0 °C/km
Total Totals51.8
LCL841 hPa
LFC—
EL—
Freezing Lvl11,345 ft