Arlington weather in August
In August, Arlington sees average daytime highs of 73°F and overnight lows near 55°F, with 1.6 in of rain across 5.5 wet days and about 14.1 hours of daylight. It is the 1st-warmest and 11th-wettest month of the year here.
Highs ease over the month, from about 74°F in the first days to 71°F by the end. The sky is clear or mostly clear about 48% of the time in August, and the air most often feels dry.
Daylight stretches from about 14 h 54 min at the start of August to 13 h 18 min by month's end. Set against the rest of the year, August is Arlington's 2nd-clearest and 11th-windiest month. For the whole year in context, see Arlington's year-round climate.
- Daytime high
- 73°
- 1st warmest
- Overnight low
- 55°
- 12th coldest
- Rainfall
- 1.6 in
- 5.5 wet days
- Daylight
- 14 h 06 min
- 5:09 AM – 7:17 PM
- Cloud cover
- 45%
- 2nd clearest
- Wind
- 4 mph
- 11th windiest
- Solar energy
- 5.37 kWh/m²
- Travel score
- 7.8
- out of 10
Arlington is city in northern Snohomish County, Washington, United States.
- Density
- 790/km²
- people per km²
- Founded
- 1903
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in August
Highs ease over the month, from about 74°F in the first days to 71°F by the end.
A typical August day in Arlington reaches about 73°F in the afternoon and slips back to 55°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 65°F and 82°F. Set against its neighbours, August runs on par with July and about 6°F warmer than September.
| 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 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 73 | 72 | 72 | 72 | 72 | 72 | 71 | 71 | 71 | 71 | 71 |
| Avg low (°F) | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 53 | 53 | 53 | 53 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 74 | 55 |
| 2 | 74 | 55 |
| 3 | 74 | 55 |
| 4 | 74 | 55 |
| 5 | 74 | 55 |
| 6 | 74 | 55 |
| 7 | 74 | 55 |
| 8 | 74 | 55 |
| 9 | 74 | 55 |
| 10 | 74 | 55 |
| 11 | 74 | 55 |
| 12 | 74 | 55 |
| 13 | 74 | 55 |
| 14 | 73 | 55 |
| 15 | 73 | 55 |
| 16 | 73 | 55 |
| 17 | 73 | 55 |
| 18 | 73 | 55 |
| 19 | 73 | 55 |
| 20 | 73 | 55 |
| 21 | 73 | 54 |
| 22 | 72 | 54 |
| 23 | 72 | 54 |
| 24 | 72 | 54 |
| 25 | 72 | 54 |
| 26 | 72 | 54 |
| 27 | 71 | 54 |
| 28 | 71 | 53 |
| 29 | 71 | 53 |
| 30 | 71 | 53 |
| 31 | 71 | 53 |
How August really feels in Arlington
Once humidity and wind are folded in, August averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Arlington weather by month
How August compares with the rest of the year at a glance. August is the 1st-warmest and 11th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 44° / 36° | 9.3 | 19.1 | 5.3 | 8.6 | 0.6 |
| Feb | 47° / 36° | 6.1 | 15.5 | 4.5 | 9.9 | 1.2 |
| Mar | 51° / 38° | 7.6 | 19.6 | 3.7 | 11.6 | 1.9 |
| Apr | 56° / 42° | 5.6 | 16.4 | 1 | 13.4 | 3.2 |
| May | 62° / 47° | 3.8 | 12.1 | 0.1 | 14.9 | 5.0 |
| Jun | 66° / 51° | 2.8 | 9.8 | 0 | 15.8 | 6.0 |
| Jul | 72° / 55° | 1.3 | 5.2 | 0 | 15.5 | 7.8 |
| Aug | 73° / 55° | 1.6 | 5.5 | 0 | 14.1 | 7.8 |
| Sep | 67° / 50° | 3.4 | 8.8 | 0 | 12.4 | 6.5 |
| Oct | 57° / 44° | 7.2 | 14.9 | 0 | 10.6 | 3.7 |
| Nov | 48° / 38° | 10.4 | 19.2 | 2.2 | 9 | 1.4 |
| Dec | 43° / 35° | 9.3 | 19.2 | 6.1 | 8.2 | 0.4 |
Cloud cover in August
The sky is clear or mostly clear about 48% of the time in August.
Beyond those clear spells, partly cloudy skies cover about 16% of August, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to cloud over as the month goes on.
| 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 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 72 | 72 | 71 | 71 | 70 | 68 | 68 | 67 | 67 | 66 | 65 | 64 | 64 | 64 | 64 | 64 | 64 | 63 | 64 | 63 | 62 | 62 | 62 | 61 | 61 | 61 | 60 | 60 | 60 | 60 | 60 |
| Cloudier (%) | 28 | 28 | 29 | 29 | 30 | 32 | 32 | 33 | 33 | 34 | 35 | 36 | 36 | 36 | 36 | 36 | 36 | 37 | 36 | 37 | 38 | 38 | 38 | 39 | 39 | 39 | 40 | 40 | 40 | 40 | 40 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 72 | 28 |
| 2 | 72 | 28 |
| 3 | 71 | 29 |
| 4 | 71 | 29 |
| 5 | 70 | 30 |
| 6 | 68 | 32 |
| 7 | 68 | 32 |
| 8 | 67 | 33 |
| 9 | 67 | 33 |
| 10 | 66 | 34 |
| 11 | 65 | 35 |
| 12 | 64 | 36 |
| 13 | 64 | 36 |
| 14 | 64 | 36 |
| 15 | 64 | 36 |
| 16 | 64 | 36 |
| 17 | 64 | 36 |
| 18 | 63 | 37 |
| 19 | 64 | 36 |
| 20 | 63 | 37 |
| 21 | 62 | 38 |
| 22 | 62 | 38 |
| 23 | 62 | 38 |
| 24 | 61 | 39 |
| 25 | 61 | 39 |
| 26 | 61 | 39 |
| 27 | 60 | 40 |
| 28 | 60 | 40 |
| 29 | 60 | 40 |
| 30 | 60 | 40 |
| 31 | 60 | 40 |
Chance of precipitation in August
Arlington gets around 1.6 in of rain over 5.5 wet days in August. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 17% and peaks near 25% on the wettest days. The odds climb toward the end of the month.
| 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 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 12 | 12 | 12 | 13 | 13 | 13 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 17 | 17 | 18 | 18 | 19 | 20 | 21 | 21 | 22 | 23 | 23 | 24 | 25 | 25 |
| Rain chance (%) | |
|---|---|
| 1 | 12 |
| 2 | 12 |
| 3 | 12 |
| 4 | 13 |
| 5 | 13 |
| 6 | 13 |
| 7 | 14 |
| 8 | 14 |
| 9 | 15 |
| 10 | 15 |
| 11 | 15 |
| 12 | 15 |
| 13 | 15 |
| 14 | 15 |
| 15 | 16 |
| 16 | 16 |
| 17 | 16 |
| 18 | 17 |
| 19 | 17 |
| 20 | 18 |
| 21 | 18 |
| 22 | 19 |
| 23 | 20 |
| 24 | 21 |
| 25 | 21 |
| 26 | 22 |
| 27 | 23 |
| 28 | 23 |
| 29 | 24 |
| 30 | 25 |
| 31 | 25 |
Humidity in August
Most of August feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, August lands in the dry band about 65% 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 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 63 | 63 | 63 | 62 | 62 | 61 | 60 | 60 | 59 | 59 | 59 | 59 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 67 | 68 | 70 | 71 | 72 | 73 | 73 | 74 | 75 | 76 |
| Comfortable (%) | 34 | 34 | 35 | 36 | 36 | 37 | 38 | 38 | 39 | 39 | 39 | 39 | 39 | 38 | 37 | 36 | 35 | 34 | 33 | 32 | 31 | 31 | 30 | 29 | 28 | 27 | 26 | 26 | 25 | 25 | 24 |
| Humid (%) | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| 1 | 63 | 34 | 3 |
| 2 | 63 | 34 | 3 |
| 3 | 63 | 35 | 2 |
| 4 | 62 | 36 | 2 |
| 5 | 62 | 36 | 2 |
| 6 | 61 | 37 | 2 |
| 7 | 60 | 38 | 2 |
| 8 | 60 | 38 | 2 |
| 9 | 59 | 39 | 2 |
| 10 | 59 | 39 | 2 |
| 11 | 59 | 39 | 2 |
| 12 | 59 | 39 | 2 |
| 13 | 59 | 39 | 2 |
| 14 | 60 | 38 | 2 |
| 15 | 61 | 37 | 2 |
| 16 | 62 | 36 | 2 |
| 17 | 63 | 35 | 2 |
| 18 | 64 | 34 | 2 |
| 19 | 65 | 33 | 2 |
| 20 | 66 | 32 | 2 |
| 21 | 67 | 31 | 2 |
| 22 | 67 | 31 | 2 |
| 23 | 68 | 30 | 2 |
| 24 | 70 | 29 | 1 |
| 25 | 71 | 28 | 1 |
| 26 | 72 | 27 | 1 |
| 27 | 73 | 26 | 1 |
| 28 | 73 | 26 | 1 |
| 29 | 74 | 25 | 1 |
| 30 | 75 | 25 | 0 |
| 31 | 76 | 24 | 0 |
Wind in August
Winds average 4 mph in August.
Across August, 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 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 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 | 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 |
| 29 | 4 | calm |
| 30 | 4 | calm |
| 31 | 4 | calm |
Sunrise & sunset in August
Daylight runs from about 14 h 54 min at the start of August to 13 h 18 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 96 minutes over August. Sunrise moves from 4:48 AM to 5:30 AM, and sunset from 7:41 PM to 6:47 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 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 14.9 | 14.8 | 14.8 | 14.7 | 14.7 | 14.6 | 14.6 | 14.5 | 14.5 | 14.4 | 14.4 | 14.3 | 14.3 | 14.2 | 14.2 | 14.1 | 14.1 | 14.0 | 14.0 | 13.9 | 13.9 | 13.8 | 13.8 | 13.7 | 13.6 | 13.6 | 13.5 | 13.5 | 13.4 | 13.4 | 13.3 |
| Sunrise (AM) | 4:48 | 4:49 | 4:51 | 4:52 | 4:53 | 4:55 | 4:56 | 4:57 | 4:59 | 5:00 | 5:02 | 5:03 | 5:04 | 5:06 | 5:07 | 5:09 | 5:10 | 5:11 | 5:13 | 5:14 | 5:16 | 5:17 | 5:18 | 5:20 | 5:21 | 5:23 | 5:24 | 5:25 | 5:27 | 5:28 | 5:30 |
| Sunset (PM) | 7:41 | 7:40 | 7:38 | 7:37 | 7:35 | 7:34 | 7:32 | 7:30 | 7:29 | 7:27 | 7:25 | 7:24 | 7:22 | 7:20 | 7:18 | 7:17 | 7:15 | 7:13 | 7:11 | 7:09 | 7:07 | 7:05 | 7:03 | 7:02 | 7:00 | 6:58 | 6:56 | 6:54 | 6:51 | 6:49 | 6:47 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.9 | 4:48 | 7:41 |
| 2 | 14.8 | 4:49 | 7:40 |
| 3 | 14.8 | 4:51 | 7:38 |
| 4 | 14.7 | 4:52 | 7:37 |
| 5 | 14.7 | 4:53 | 7:35 |
| 6 | 14.6 | 4:55 | 7:34 |
| 7 | 14.6 | 4:56 | 7:32 |
| 8 | 14.5 | 4:57 | 7:30 |
| 9 | 14.5 | 4:59 | 7:29 |
| 10 | 14.4 | 5:00 | 7:27 |
| 11 | 14.4 | 5:02 | 7:25 |
| 12 | 14.3 | 5:03 | 7:24 |
| 13 | 14.3 | 5:04 | 7:22 |
| 14 | 14.2 | 5:06 | 7:20 |
| 15 | 14.2 | 5:07 | 7:18 |
| 16 | 14.1 | 5:09 | 7:17 |
| 17 | 14.1 | 5:10 | 7:15 |
| 18 | 14.0 | 5:11 | 7:13 |
| 19 | 14.0 | 5:13 | 7:11 |
| 20 | 13.9 | 5:14 | 7:09 |
| 21 | 13.9 | 5:16 | 7:07 |
| 22 | 13.8 | 5:17 | 7:05 |
| 23 | 13.8 | 5:18 | 7:03 |
| 24 | 13.7 | 5:20 | 7:02 |
| 25 | 13.6 | 5:21 | 7:00 |
| 26 | 13.6 | 5:23 | 6:58 |
| 27 | 13.5 | 5:24 | 6:56 |
| 28 | 13.5 | 5:25 | 6:54 |
| 29 | 13.4 | 5:27 | 6:51 |
| 30 | 13.4 | 5:28 | 6:49 |
| 31 | 13.3 | 5:30 | 6:47 |
Solar energy in August
Average shortwave solar energy reaching the ground each day in August, about 5.37 kWh/m².
For context, solar energy here swings from a low near 0.83 kWh/m² to a high of 6.16 kWh/m² in July across the year — August's 5.37 kWh/m² sits near the top of that range.
| 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 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.1 | 6.0 | 6.0 | 5.9 | 5.9 | 5.8 | 5.8 | 5.8 | 5.7 | 5.7 | 5.6 | 5.6 | 5.5 | 5.5 | 5.4 | 5.4 | 5.3 | 5.3 | 5.3 | 5.2 | 5.2 | 5.1 | 5.1 | 5.0 | 5.0 | 4.9 | 4.9 | 4.8 | 4.8 | 4.8 | 4.7 |
| Level | Intense | Intense | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.1 | Intense |
| 2 | 6.0 | Intense |
| 3 | 6.0 | Bright |
| 4 | 5.9 | Bright |
| 5 | 5.9 | Bright |
| 6 | 5.8 | Bright |
| 7 | 5.8 | Bright |
| 8 | 5.8 | Bright |
| 9 | 5.7 | Bright |
| 10 | 5.7 | Bright |
| 11 | 5.6 | Bright |
| 12 | 5.6 | Bright |
| 13 | 5.5 | Bright |
| 14 | 5.5 | Bright |
| 15 | 5.4 | Bright |
| 16 | 5.4 | Bright |
| 17 | 5.3 | Bright |
| 18 | 5.3 | Bright |
| 19 | 5.3 | Bright |
| 20 | 5.2 | Bright |
| 21 | 5.2 | Bright |
| 22 | 5.1 | Bright |
| 23 | 5.1 | Bright |
| 24 | 5.0 | Bright |
| 25 | 5.0 | Bright |
| 26 | 4.9 | Bright |
| 27 | 4.9 | Bright |
| 28 | 4.8 | Bright |
| 29 | 4.8 | Bright |
| 30 | 4.8 | Bright |
| 31 | 4.7 | Bright |
Hazard calendar for Arlington
None of Arlington's seasonal hazards are active in August. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Arlington's rainy season runs October–April, when most of the year's rain falls.
Is August a good time to visit Arlington?
Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
August is one of the better times to visit Arlington for general sightseeing.
What to pack for Arlington in August
From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In August, Arlington sees daytime highs around 73°F and nights near 55°F. Worth packing: light clothes and sun protection. About 6 days see rain.
Sea temperature near Arlington in August
The nearest coast averages about 53°F in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 35 mi away) is warmest in August at about 53°F and coldest in February near 46°F.
The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 46 | 46 | 47 | 48 | 50 | 52 | 53 | 53 | 53 | 50 | 49 | 47 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 46 | Bracing |
| Feb | 46 | Bracing |
| Mar | 47 | Bracing |
| Apr | 48 | Bracing |
| May | 50 | Bracing |
| Jun | 52 | Bracing |
| Jul | 53 | Bracing |
| Aug | 53 | Bracing |
| Sep | 53 | Bracing |
| Oct | 50 | Bracing |
| Nov | 49 | Bracing |
| Dec | 47 | Bracing |
UV index in Arlington in August
Clear-sky midday UV in August peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Arlington peaks around July 17 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 18 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 1 | 4 | 5 | 7 | 6 | 8 | 6 | 4 | 3 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | High | High | Very high | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 1 | Low |
| Mar | 4 | Moderate |
| Apr | 5 | Moderate |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 8 | Very high |
| Aug | 6 | High |
| Sep | 4 | Moderate |
| Oct | 3 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Air quality in Arlington in August
Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.
Air quality in Arlington is worst in August — around 20 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (December, 6 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) | 8 | 10 | 12 | 12 | 13 | 11 | 10 | 20 | 18 | 11 | 7 | 6 |
| Level | Good | Good | Moderate | Good | Moderate | Good | Good | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 10 | Good |
| Mar | 12 | Moderate |
| Apr | 12 | Good |
| May | 13 | Moderate |
| Jun | 11 | Good |
| Jul | 10 | Good |
| Aug | 20 | Moderate |
| Sep | 18 | Moderate |
| Oct | 11 | Good |
| Nov | 7 | Good |
| Dec | 6 | Good |
Where is Arlington?
Arlington sits at 48.2°N, 122.1°W, 115 ft above sea level, in United States. The nearest listed city is Marysville, 11 mi away.
Topography around Arlington
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Arlington.
Within 2 miles, the terrain around Arlington has only modest variations in elevation — a maximum elevation change of 479 ft around an average of 157 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,297 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 10,755 ft.
The land around Arlington is covered by trees (51%) and grassland (32%) within 2 miles, trees (76%) within 10 miles, and trees (66%) and water (21%) 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 Arlington (48.1987°, -122.1251°, elevation 115 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).