The Dalles weather in February
In February, The Dalles sees average daytime highs of 44°F and overnight lows near 30°F, with 3.6 in of precipitation across 12.8 wet days and about 10.1 hours of daylight. It is the 10th-warmest and 4th-wettest month of the year here.
Highs climb over the month, from about 42°F in the first days to 45°F by the end. The sky is clear or mostly clear about 18% of the time in February, and the air most often feels dry.
Daylight stretches from about 9 h 24 min at the start of February to 10 h 42 min by month's end. Set against the rest of the year, February is The Dalles's 9th-clearest and 9th-windiest month. For the whole year in context, see The Dalles's year-round climate.
- Daytime high
- 44°
- 10th warmest
- Overnight low
- 30°
- 3rd coldest
- Precipitation
- 3.6 in
- 12.8 wet days
- Daylight
- 10 h 06 min
- 7:17 AM – 5:22 PM
- Cloud cover
- 71%
- 9th clearest
- Wind
- 4 mph
- 9th windiest
- Solar energy
- 2.42 kWh/m²
- Travel score
- 0.6
- out of 10
The Dalles is city in and county seat of Wasco County, Oregon, United States.
- Density
- 854/km²
- people per km²
- Founded
- 1857
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in February
Highs climb over the month, from about 42°F in the first days to 45°F by the end.
A typical February day in The Dalles reaches about 44°F in the afternoon and slips back to 30°F overnight — a 14°F spread between the day's warmth and the night's chill. On most days the high lands between 36°F and 52°F. Set against its neighbours, February runs about 5°F warmer than January and about 7°F cooler than March.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 42 | 42 | 42 | 42 | 42 | 43 | 43 | 43 | 43 | 43 | 43 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 45 | 45 | 45 | 45 | 45 | 46 | 46 | 46 |
| Avg low (°F) | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 31 | 31 | 31 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 42 | 30 |
| 2 | 42 | 30 |
| 3 | 42 | 30 |
| 4 | 42 | 30 |
| 5 | 42 | 30 |
| 6 | 43 | 30 |
| 7 | 43 | 30 |
| 8 | 43 | 30 |
| 9 | 43 | 30 |
| 10 | 43 | 30 |
| 11 | 43 | 30 |
| 12 | 44 | 30 |
| 13 | 44 | 30 |
| 14 | 44 | 30 |
| 15 | 44 | 30 |
| 16 | 44 | 30 |
| 17 | 44 | 30 |
| 18 | 44 | 30 |
| 19 | 44 | 30 |
| 20 | 44 | 30 |
| 21 | 45 | 30 |
| 22 | 45 | 30 |
| 23 | 45 | 30 |
| 24 | 45 | 30 |
| 25 | 45 | 31 |
| 26 | 46 | 31 |
| 27 | 46 | 31 |
| 28 | 46 | 31 |
How February really feels in The Dalles
Once humidity and wind are folded in, February averages 0 days that feel above 90°F and 28 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
The story in February is cold — wind chill drags the overnight "feels like" below the raw low.
The Dalles weather by month
How February compares with the rest of the year at a glance. February is the 10th-warmest and 4th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 39° / 29° | 4.6 | 14.6 | 6.7 | 8.9 | 0.0 |
| Feb | 44° / 30° | 3.6 | 12.8 | 5.2 | 10.1 | 0.6 |
| Mar | 51° / 34° | 3.4 | 13.6 | 3.1 | 11.6 | 2.2 |
| Apr | 57° / 39° | 2.3 | 11.4 | 0.4 | 13.3 | 3.9 |
| May | 66° / 45° | 1.6 | 7.9 | 0 | 14.7 | 6.3 |
| Jun | 73° / 50° | 0.9 | 5.1 | 0 | 15.4 | 7.7 |
| Jul | 82° / 55° | 0.3 | 1.7 | 0 | 15.1 | 7.7 |
| Aug | 83° / 55° | 0.3 | 1.9 | 0 | 13.9 | 7.6 |
| Sep | 74° / 50° | 0.8 | 3.2 | 0 | 12.3 | 8.2 |
| Oct | 60° / 42° | 2.3 | 8.4 | 0.2 | 10.7 | 5.2 |
| Nov | 46° / 34° | 4.1 | 13.5 | 2.4 | 9.3 | 1.2 |
| Dec | 38° / 28° | 5.3 | 15.3 | 7.7 | 8.6 | 0.0 |
Cloud cover in February
The sky is clear or mostly clear about 18% of the time in February.
Beyond those clear spells, partly cloudy skies cover about 11% of February, with mostly cloudy or overcast conditions the remaining 71%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 26 | 25 | 26 | 26 | 26 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 30 | 29 | 30 | 30 | 30 | 31 | 32 | 32 | 32 | 31 | 32 |
| Cloudier (%) | 74 | 75 | 74 | 74 | 74 | 73 | 73 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 71 | 71 | 70 | 71 | 70 | 70 | 70 | 69 | 68 | 68 | 68 | 69 | 68 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 26 | 74 |
| 2 | 25 | 75 |
| 3 | 26 | 74 |
| 4 | 26 | 74 |
| 5 | 26 | 74 |
| 6 | 27 | 73 |
| 7 | 27 | 73 |
| 8 | 28 | 72 |
| 9 | 28 | 72 |
| 10 | 28 | 72 |
| 11 | 28 | 72 |
| 12 | 28 | 72 |
| 13 | 28 | 72 |
| 14 | 28 | 72 |
| 15 | 28 | 72 |
| 16 | 29 | 71 |
| 17 | 29 | 71 |
| 18 | 30 | 70 |
| 19 | 29 | 71 |
| 20 | 30 | 70 |
| 21 | 30 | 70 |
| 22 | 30 | 70 |
| 23 | 31 | 69 |
| 24 | 32 | 68 |
| 25 | 32 | 68 |
| 26 | 32 | 68 |
| 27 | 31 | 69 |
| 28 | 32 | 68 |
Chance of precipitation in February
The Dalles gets around 3.6 in of rain and snow over 12.8 wet days in February. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 46% and peaks near 48% on the wettest days, and about 5 days bring snow.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 44 | 44 | 44 | 43 | 44 | 44 | 44 | 44 | 45 | 45 | 46 | 46 | 47 | 47 | 47 | 47 | 48 | 48 | 48 | 48 | 48 | 47 | 47 | 47 | 46 | 45 | 45 | 44 |
| Snow chance (%) | 18 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 18 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 44 | 18 |
| 2 | 44 | 17 |
| 3 | 44 | 17 |
| 4 | 43 | 17 |
| 5 | 44 | 17 |
| 6 | 44 | 18 |
| 7 | 44 | 18 |
| 8 | 44 | 18 |
| 9 | 45 | 18 |
| 10 | 45 | 18 |
| 11 | 46 | 18 |
| 12 | 46 | 18 |
| 13 | 47 | 18 |
| 14 | 47 | 18 |
| 15 | 47 | 18 |
| 16 | 47 | 19 |
| 17 | 48 | 19 |
| 18 | 48 | 19 |
| 19 | 48 | 19 |
| 20 | 48 | 19 |
| 21 | 48 | 19 |
| 22 | 47 | 19 |
| 23 | 47 | 19 |
| 24 | 47 | 19 |
| 25 | 46 | 19 |
| 26 | 45 | 19 |
| 27 | 45 | 19 |
| 28 | 44 | 18 |
Humidity in February
Most of February feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, February lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Dry (%) | |
|---|---|
| 1 | 100 |
| 2 | 100 |
| 3 | 100 |
| 4 | 100 |
| 5 | 100 |
| 6 | 100 |
| 7 | 100 |
| 8 | 100 |
| 9 | 100 |
| 10 | 100 |
| 11 | 100 |
| 12 | 100 |
| 13 | 100 |
| 14 | 100 |
| 15 | 100 |
| 16 | 100 |
| 17 | 100 |
| 18 | 100 |
| 19 | 100 |
| 20 | 100 |
| 21 | 100 |
| 22 | 100 |
| 23 | 100 |
| 24 | 100 |
| 25 | 100 |
| 26 | 100 |
| 27 | 100 |
| 28 | 100 |
Wind in February
Winds average 4 mph in February.
Across February, daily wind ranges from about 4 mph on the calmest days to 4 mph at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 4 | calm |
| 2 | 4 | calm |
| 3 | 4 | calm |
| 4 | 4 | calm |
| 5 | 4 | calm |
| 6 | 4 | calm |
| 7 | 4 | calm |
| 8 | 4 | calm |
| 9 | 4 | calm |
| 10 | 4 | calm |
| 11 | 4 | calm |
| 12 | 4 | calm |
| 13 | 4 | calm |
| 14 | 4 | calm |
| 15 | 4 | calm |
| 16 | 4 | calm |
| 17 | 4 | calm |
| 18 | 4 | calm |
| 19 | 4 | calm |
| 20 | 4 | calm |
| 21 | 4 | calm |
| 22 | 4 | calm |
| 23 | 4 | calm |
| 24 | 4 | calm |
| 25 | 4 | calm |
| 26 | 4 | calm |
| 27 | 4 | calm |
| 28 | 4 | calm |
Sunrise & sunset in February
Daylight runs from about 9 h 24 min at the start of February to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 78 minutes over February. Sunrise moves from 7:35 AM to 6:56 AM, and sunset from 5:01 PM to 5:40 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 9.4 | 9.5 | 9.5 | 9.6 | 9.6 | 9.7 | 9.7 | 9.7 | 9.8 | 9.8 | 9.9 | 9.9 | 10.0 | 10.0 | 10.1 | 10.1 | 10.2 | 10.2 | 10.3 | 10.3 | 10.4 | 10.4 | 10.5 | 10.5 | 10.6 | 10.6 | 10.7 | 10.7 |
| Sunrise (AM) | 7:35 | 7:34 | 7:33 | 7:32 | 7:30 | 7:29 | 7:28 | 7:27 | 7:25 | 7:24 | 7:23 | 7:21 | 7:20 | 7:18 | 7:17 | 7:15 | 7:14 | 7:12 | 7:11 | 7:09 | 7:08 | 7:06 | 7:04 | 7:03 | 7:01 | 6:59 | 6:58 | 6:56 |
| Sunset (PM) | 5:01 | 5:03 | 5:04 | 5:06 | 5:07 | 5:09 | 5:10 | 5:12 | 5:13 | 5:14 | 5:16 | 5:17 | 5:19 | 5:20 | 5:22 | 5:23 | 5:25 | 5:26 | 5:27 | 5:29 | 5:30 | 5:32 | 5:33 | 5:35 | 5:36 | 5:37 | 5:39 | 5:40 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 9.4 | 7:35 | 5:01 |
| 2 | 9.5 | 7:34 | 5:03 |
| 3 | 9.5 | 7:33 | 5:04 |
| 4 | 9.6 | 7:32 | 5:06 |
| 5 | 9.6 | 7:30 | 5:07 |
| 6 | 9.7 | 7:29 | 5:09 |
| 7 | 9.7 | 7:28 | 5:10 |
| 8 | 9.7 | 7:27 | 5:12 |
| 9 | 9.8 | 7:25 | 5:13 |
| 10 | 9.8 | 7:24 | 5:14 |
| 11 | 9.9 | 7:23 | 5:16 |
| 12 | 9.9 | 7:21 | 5:17 |
| 13 | 10.0 | 7:20 | 5:19 |
| 14 | 10.0 | 7:18 | 5:20 |
| 15 | 10.1 | 7:17 | 5:22 |
| 16 | 10.1 | 7:15 | 5:23 |
| 17 | 10.2 | 7:14 | 5:25 |
| 18 | 10.2 | 7:12 | 5:26 |
| 19 | 10.3 | 7:11 | 5:27 |
| 20 | 10.3 | 7:09 | 5:29 |
| 21 | 10.4 | 7:08 | 5:30 |
| 22 | 10.4 | 7:06 | 5:32 |
| 23 | 10.5 | 7:04 | 5:33 |
| 24 | 10.5 | 7:03 | 5:35 |
| 25 | 10.6 | 7:01 | 5:36 |
| 26 | 10.6 | 6:59 | 5:37 |
| 27 | 10.7 | 6:58 | 5:39 |
| 28 | 10.7 | 6:56 | 5:40 |
Solar energy in February
Average shortwave solar energy reaching the ground each day in February, about 2.42 kWh/m².
For context, solar energy here swings from a low near 1.24 kWh/m² to a high of 7.69 kWh/m² in July across the year — February's 2.42 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 1.9 | 1.9 | 2.0 | 2.0 | 2.0 | 2.1 | 2.1 | 2.1 | 2.2 | 2.2 | 2.3 | 2.3 | 2.3 | 2.4 | 2.4 | 2.5 | 2.5 | 2.5 | 2.6 | 2.6 | 2.7 | 2.7 | 2.8 | 2.8 | 2.8 | 2.9 | 2.9 | 3.0 |
| Level | Dim | Dim | Dim | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 1.9 | Dim |
| 2 | 1.9 | Dim |
| 3 | 2.0 | Dim |
| 4 | 2.0 | Moderate |
| 5 | 2.0 | Moderate |
| 6 | 2.1 | Moderate |
| 7 | 2.1 | Moderate |
| 8 | 2.1 | Moderate |
| 9 | 2.2 | Moderate |
| 10 | 2.2 | Moderate |
| 11 | 2.3 | Moderate |
| 12 | 2.3 | Moderate |
| 13 | 2.3 | Moderate |
| 14 | 2.4 | Moderate |
| 15 | 2.4 | Moderate |
| 16 | 2.5 | Moderate |
| 17 | 2.5 | Moderate |
| 18 | 2.5 | Moderate |
| 19 | 2.6 | Moderate |
| 20 | 2.6 | Moderate |
| 21 | 2.7 | Moderate |
| 22 | 2.7 | Moderate |
| 23 | 2.8 | Moderate |
| 24 | 2.8 | Moderate |
| 25 | 2.8 | Moderate |
| 26 | 2.9 | Moderate |
| 27 | 2.9 | Moderate |
| 28 | 3.0 | Moderate |
Hazard calendar for The Dalles
In February, The Dalles sits inside its rainy season season. The full year is below, with each hazard's peak months called out.
The Dalles's rainy season runs November–March, when most of the year's rain falls.
Is February a good time to visit The Dalles?
Our two travel scores rate February for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
February is a weaker month for outdoor sightseeing in The Dalles.
What to pack for The Dalles in February
From February's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In February, The Dalles sees daytime highs around 44°F and nights near 30°F. Pack a warm layer and rain gear. Worth having: a heavy coat. About 13 days see rain.
UV index in The Dalles in February
Clear-sky midday UV in February peaks around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in The Dalles peaks around July 16 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 2 | 4 | 5 | 8 | 7 | 9 | 7 | 5 | 4 | 1 | 1 |
| Level | Low | Moderate | Moderate | High | Very high | High | Very high | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 2 | Moderate |
| Mar | 4 | Moderate |
| Apr | 5 | High |
| May | 8 | Very high |
| Jun | 7 | High |
| Jul | 9 | Very high |
| Aug | 7 | High |
| Sep | 5 | Moderate |
| Oct | 4 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Air quality in The Dalles in February
Average fine-particle pollution (PM2.5) through the year — so you can see where February falls, not just the annual average.
Air quality in The Dalles is worst in August — around 43 µg/m³ PM2.5 (poor), about 8.8× the cleanest month (December, 5 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 5 | 6 | 8 | 8 | 8 | 8 | 8 | 43 | 29 | 10 | 9 | 5 |
| Level | Good | Good | Good | Good | Good | Good | Good | Poor | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 5 | Good |
| Feb | 6 | Good |
| Mar | 8 | Good |
| Apr | 8 | Good |
| May | 8 | Good |
| Jun | 8 | Good |
| Jul | 8 | Good |
| Aug | 43 | Poor |
| Sep | 29 | Moderate |
| Oct | 10 | Good |
| Nov | 9 | Good |
| Dec | 5 | Good |
Where is The Dalles?
The Dalles sits at 45.6°N, 121.2°W, 253 ft above sea level, in United States. The nearest listed city is Washougal, 57 mi away.
Topography around The Dalles
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of The Dalles.
Within 2 miles, the terrain around The Dalles has significant variations in elevation — a maximum elevation change of 1,047 ft around an average of 397 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,140 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 12,215 ft.
The land around The Dalles is covered by trees (38%), grassland (29%) and artificial surfaces (22%) within 2 miles, grassland (58%) and trees (24%) within 10 miles, and trees (50%) and grassland (39%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for The Dalles (45.5946°, -121.1787°, elevation 253 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).