Today
Sun, Jun 21
Clear sky
89°60°
- Rain chance
- 0%
- Precip
- 0 in
- Max wind
- 6 mph
Tri-Cities weather forecast
Washington, United States · Los_Angeles time · 46.25°, -119.20°
Current conditions · 7:45 AM local
Current conditions in Tri-Cities
72°F
Clear sky
Feels like 64°F
- Humidity
- 44%
- Wind
- 6 mph NW
- Gusts
- 13 mph
- UV index
- 0
- Visibility
- 27.2 mi
Right now
Right now in Tri-Cities, it's clear sky with the temperature at 22 °C. It feels colder than it reads, more like 20 °C. Wind is from the NW at 10 km/h. Humidity stands at 33% with sea-level pressure near 1014 hPa.
At a glance
Today
89° / 60°Clear sky
Tomorrow
90° / 65°Overcast
Upcoming · to Saturday
97° / 59°A steady stretch: highs near 97°, lows around 59°, and no day above a 20% rain chance through Saturday.
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Next 3 days
Expect clear sky today, between 16 °C and 32 °C. Tomorrow looks like overcast; temperatures run from 18 °C up to 32 °C. Tuesday brings overcast with a high of 35 °C and a low of 18 °C.
Tomorrow
Mon, Jun 22
Overcast
90°65°
- Rain chance
- 0%
- Precip
- 0 in
- Max wind
- 10 mph
Tuesday
Tue, Jun 23
Overcast
95°65°
- Rain chance
- 0%
- Precip
- 0 in
- Max wind
- 11 mph
Next 48 hours
- 12 AM67°0%4 mph
- 1 AM65°0%5 mph
- 2 AM63°0%4 mph
- 3 AM62°0%3 mph
- 4 AM61°0%3 mph
- 5 AM61°0%4 mph
- 6 AM60°0%5 mph
- 7 AM68°0%4 mph
- 8 AM73°0%6 mph
- 9 AM76°0%6 mph
- 10 AM79°0%6 mph
- 11 AM81°0%5 mph
- 12 PM84°0%5 mph
- 1 PM86°0%5 mph
- 2 PM87°0%5 mph
- 3 PM88°0%5 mph
- 4 PM89°0%5 mph
- 5 PM89°0%5 mph
- 6 PM88°0%4 mph
- 7 PM87°0%4 mph
- 8 PM85°0%3 mph
- 9 PM80°0%2 mph
- 10 PM77°0%3 mph
- 11 PM73°0%2 mph
- 12 AM72°0%5 mph
- 1 AM69°0%3 mph
- 2 AM68°0%2 mph
- 3 AM67°0%3 mph
- 4 AM65°0%7 mph
- 5 AM65°0%6 mph
- 6 AM65°0%5 mph
- 7 AM71°0%6 mph
- 8 AM74°0%8 mph
- 9 AM78°0%9 mph
- 10 AM82°0%9 mph
- 11 AM85°0%10 mph
- 12 PM87°0%10 mph
- 1 PM88°0%9 mph
- 2 PM89°0%8 mph
- 3 PM90°0%8 mph
- 4 PM90°0%8 mph
- 5 PM90°0%8 mph
- 6 PM89°0%9 mph
- 7 PM88°0%8 mph
- 8 PM85°0%6 mph
- 9 PM79°0%5 mph
- 10 PM74°0%4 mph
- 11 PM71°0%2 mph
In depth
Tri-Cities starts the period under clear sky, with the mercury at 22 °C and a feels-like of 20 °C. Today's forecast calls for clear sky, topping out near 32 °C before falling back to 16 °C overnight. Winds blow mainly from the N around 10 km/h, with gusts up to 18 km/h. Highs ease downward through the week, ranging 23 to 36 °C. No meaningful rain shows up in the seven-day outlook, so dry conditions should dominate. Tomorrow brings overcast with a high of 32 °C and a 0% chance of precipitation. The UV index reaches 7 today, so sun protection is sensible during the middle of the day. Sunrise comes at 05:05 and sunset at 20:52, giving 15.8 hours of daylight. Current humidity sits at 33% with pressure near 1014 hPa. Looking further out, Thursday shows overcast with a high around 32 °C, while Saturday ends the week at 23 °C. Forecast details are refreshed throughout the day as new model runs arrive, so check back for the latest figures.
Air quality
27
Good
US AQI · European AQI 21
Air quality in Tri-Cities is currently good, with a US AQI of 27 (European AQI 21). The dominant pollutant right now is ozone. Air quality is healthy; no precautions needed. Fine particulate matter (PM2.5) measures 5 µg/m³.
Pollutants
- PM2.5
- 5 µg/m³
- PM10
- 6.8 µg/m³
- Ozone (O₃)
- 53 µg/m³
- NO₂
- 5 µg/m³
- SO₂
- 0.6 µg/m³
- CO
- 107 µg/m³
- Dust
- 0 µg/m³
Sun & UV
- Sunrise
- 5:05 AM
- Sunset
- 8:52 PM
- Daylight
- 15h 47m
- Max UV
- 7.45 High
Wind
- Wind
- 6 mph
- Gusts
- 13 mph
- Direction
- NW (308°)
Farming weather
Soil temperatures today read surface 20.1 °C, 6 cm 24.2 °C, 18 cm 26.4 °C, 54 cm 23.4 °C. Soil moisture sits at 0-1 cm at 0.02 m³/m³, 3-9 cm at 0.04 m³/m³, 27-81 cm at 0.09 m³/m³. For maize, the root-zone reading is below the ideal 0.2-0.35 m³/m³ band. Reference evapotranspiration totals 54 mm against only 1 mm of expected rain — a 54 mm deficit, so irrigation will be needed this week. A suitable spraying window opens around 06:00 on 2026-06-21, with winds at or below 15 km/h and no rain expected. Heat stress is likely for maize with highs reaching 36 °C (threshold 35 °C). Heat stress is likely for wheat with highs reaching 36 °C (threshold 32 °C). Projected growing degree days over the next week: maize 97, wheat 136.
- Topsoil moisture
- 0.017 m³/m³
- Soil temp
- 64°F
- ET₀ today
- 7.02 mm
- Spray window
- ~5:00
- Rain (next 7d)
- 0 in
- Wind
- 6 mph
- Humidity
- 44%
Advisory summary
No weather alert thresholds are crossed for Tri-Cities in the current forecast (derived from forecast data, not official warnings). Conditions may still change — check back for updates.
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All data for Tri-Cities
| Variable | Value |
|---|---|
| City | Tri-Cities, Washington, United States |
| Coordinates | 46.2454, -119.19617 |
| Elevation | 106 m |
| Timezone | America/Los_Angeles |
| Population | 244,036 |
| Observed at (local) | 7:45 AM |
| Temperature (2 m) | 72°F |
| Apparent temperature | 64°F |
| Relative humidity (2 m) | 44% |
| Dew point (2 m) | 45°F |
| Precipitation (last hour) | 0 in |
| Rain | 0 in |
| Showers | 0 in |
| Snowfall | 0 in |
| Weather code (WMO) | 0 |
| Cloud cover | 4% |
| Surface pressure | 29.6 inHg |
| Sea-level pressure | 29.9 inHg |
| Wind speed (10 m) | 6 mph |
| Wind gusts (10 m) | 13 mph |
| Wind direction (10 m) | 308° (NW) |
| Visibility | 27.2 mi |
| UV index | 0 |
| Day / night | Day |
| Today max / min | 89°F / 60°F |
| Today feels-like max / min | 87°F / 56°F |
| Today precipitation sum | 0 in |
| Today rain sum | 0 in |
| Today snowfall sum | 0 in |
| Today max precip probability | 0% |
| Today max wind / gusts | 6 mph / 11 mph |
| Dominant wind direction | 357° (N) |
| Sunrise / sunset | 5:05 AM / 8:52 PM |
| Daylight duration | 15h 47m |
| Sunshine duration | 15h 18m |
| Max UV index | 7.45 |
| Reference evapotranspiration (ET₀) | 7.02 mm |
| Topsoil moisture (0–1 cm) | 0.017 m³/m³ |
| Surface soil temperature | 64°F |
| US AQI | 27 |
| European AQI | 21 |
| PM2.5 | 5 µg/m³ |
| PM10 | 6.8 µg/m³ |
| Ozone (O₃) | 53 µg/m³ |
| Nitrogen dioxide (NO₂) | 5 µg/m³ |
| Sulphur dioxide (SO₂) | 0.6 µg/m³ |
| Carbon monoxide (CO) | 107 µg/m³ |
| Dust | 0 µg/m³ |
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<iframe src="https://weathertomorrow.cloud/embed/city/us/washington/tri-cities" width="320" height="180" frameborder="0" title="Tri-Cities weather" loading="lazy"></iframe>Frequently asked questions
Will it rain in Tri-Cities tomorrow?
Rain is unlikely in Tri-Cities tomorrow; the precipitation chance stays around 0%.
What is the temperature in Tri-Cities today?
Today Tri-Cities sees clear sky with a high of 32 °C and a low of 16 °C.
How hot will it be in Tri-Cities tomorrow?
Tomorrow's high in Tri-Cities is forecast at 32 °C with overcast.
Is it windy in Tri-Cities today?
No, not especially; gusts only reach up to 18 km/h today.
What is the UV index in Tri-Cities today?
The UV index peaks at 7 today, which is high.
What time is sunrise and sunset in Tri-Cities today?
The sun rises at 05:05 and sets at 20:52 local time.
Is the air quality in Tri-Cities good today?
Air quality is good right now, with a US AQI reading of 27.