Vallejo weather in June
In June, Vallejo sees average daytime highs of 79°F and overnight lows near 55°F, with 0.2 in of rain across 0.8 wet days and about 14.6 hours of daylight. It is the 4th-warmest and 9th-wettest month of the year here.
Highs climb over the month, from about 76°F in the first days to 80°F by the end. The sky is clear or mostly clear about 79% of the time in June, and the air most often feels dry.
Daylight stretches from about 14 h 24 min at the start of June to 14 h 36 min by month's end. Set against the rest of the year, June is Vallejo's 4th-clearest and 1st-windiest month. For the whole year in context, see Vallejo's year-round climate.
- Daytime high
- 79°
- 4th warmest
- Overnight low
- 55°
- 9th coldest
- Rainfall
- 0.2 in
- 0.8 wet days
- Daylight
- 14 h 36 min
- 4:50 AM – 7:28 PM
- Cloud cover
- 21%
- 4th clearest
- Wind
- 8 mph
- 1st windiest
- Solar energy
- 7.96 kWh/m²
- Travel score
- 8.9
- out of 10
Vallejo is city in Solano County, California, United States.
- Density
- 948/km²
- people per km²
- Founded
- 1851
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in June
Highs climb over the month, from about 76°F in the first days to 80°F by the end.
A typical June day in Vallejo reaches about 79°F in the afternoon and slips back to 55°F overnight — a 24°F spread between the day's warmth and the night's chill. On most days the high lands between 70°F and 90°F. Set against its neighbours, June runs about 5°F warmer than May and about 2°F cooler than July.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 76 | 76 | 76 | 77 | 77 | 77 | 77 | 78 | 78 | 78 | 78 | 79 | 79 | 79 | 79 | 79 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 |
| Avg low (°F) | 53 | 53 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 55 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 76 | 53 |
| 2 | 76 | 53 |
| 3 | 76 | 54 |
| 4 | 77 | 54 |
| 5 | 77 | 54 |
| 6 | 77 | 54 |
| 7 | 77 | 54 |
| 8 | 78 | 54 |
| 9 | 78 | 54 |
| 10 | 78 | 54 |
| 11 | 78 | 54 |
| 12 | 79 | 55 |
| 13 | 79 | 55 |
| 14 | 79 | 55 |
| 15 | 79 | 55 |
| 16 | 79 | 55 |
| 17 | 80 | 55 |
| 18 | 80 | 55 |
| 19 | 80 | 55 |
| 20 | 80 | 55 |
| 21 | 80 | 55 |
| 22 | 80 | 55 |
| 23 | 80 | 55 |
| 24 | 80 | 55 |
| 25 | 80 | 55 |
| 26 | 80 | 55 |
| 27 | 80 | 55 |
| 28 | 80 | 55 |
| 29 | 80 | 55 |
| 30 | 80 | 55 |
Vallejo weather by month
How June compares with the rest of the year at a glance. June is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 57° / 42° | 4.0 | 9.3 | 9.7 | 4.2 |
| Feb | 61° / 44° | 4.2 | 8.8 | 10.5 | 5.0 |
| Mar | 64° / 46° | 3.1 | 8.7 | 11.7 | 6.1 |
| Apr | 68° / 48° | 1.4 | 4.9 | 13 | 7.3 |
| May | 74° / 52° | 0.7 | 3 | 14 | 8.4 |
| Jun | 79° / 55° | 0.2 | 0.8 | 14.6 | 8.9 |
| Jul | 80° / 56° | 0.0 | 0.1 | 14.4 | 9.0 |
| Aug | 81° / 56° | 0.0 | 0.2 | 13.5 | 8.9 |
| Sep | 81° / 55° | 0.1 | 0.4 | 12.3 | 8.8 |
| Oct | 75° / 52° | 0.9 | 3 | 11 | 8.5 |
| Nov | 65° / 46° | 1.9 | 5.6 | 9.9 | 6.5 |
| Dec | 57° / 42° | 3.7 | 9.3 | 9.4 | 4.3 |
Cloud cover in June
The sky is clear or mostly clear about 79% of the time in June.
Beyond those clear spells, partly cloudy skies cover about 7% of June, with mostly cloudy or overcast conditions the remaining 14%. Skies tend to open up 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 79 | 79 | 79 | 81 | 81 | 81 | 81 | 82 | 83 | 84 | 85 | 85 | 86 | 86 | 88 | 88 | 88 | 89 | 89 | 89 | 90 | 90 | 90 | 90 | 90 | 90 | 91 | 91 | 91 | 92 |
| Cloudier (%) | 21 | 21 | 21 | 19 | 19 | 19 | 19 | 18 | 17 | 16 | 15 | 15 | 14 | 14 | 12 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 8 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 79 | 21 |
| 2 | 79 | 21 |
| 3 | 79 | 21 |
| 4 | 81 | 19 |
| 5 | 81 | 19 |
| 6 | 81 | 19 |
| 7 | 81 | 19 |
| 8 | 82 | 18 |
| 9 | 83 | 17 |
| 10 | 84 | 16 |
| 11 | 85 | 15 |
| 12 | 85 | 15 |
| 13 | 86 | 14 |
| 14 | 86 | 14 |
| 15 | 88 | 12 |
| 16 | 88 | 12 |
| 17 | 88 | 12 |
| 18 | 89 | 11 |
| 19 | 89 | 11 |
| 20 | 89 | 11 |
| 21 | 90 | 10 |
| 22 | 90 | 10 |
| 23 | 90 | 10 |
| 24 | 90 | 10 |
| 25 | 90 | 10 |
| 26 | 90 | 10 |
| 27 | 91 | 9 |
| 28 | 91 | 9 |
| 29 | 91 | 9 |
| 30 | 92 | 8 |
Chance of precipitation in June
Vallejo gets around 0.2 in of rain over 0.8 wet days in June. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 3% and peaks near 6% on the wettest days.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 6 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Rain chance (%) | |
|---|---|
| 1 | 6 |
| 2 | 5 |
| 3 | 5 |
| 4 | 5 |
| 5 | 5 |
| 6 | 5 |
| 7 | 4 |
| 8 | 4 |
| 9 | 4 |
| 10 | 4 |
| 11 | 3 |
| 12 | 3 |
| 13 | 3 |
| 14 | 3 |
| 15 | 2 |
| 16 | 2 |
| 17 | 2 |
| 18 | 2 |
| 19 | 2 |
| 20 | 2 |
| 21 | 1 |
| 22 | 1 |
| 23 | 1 |
| 24 | 1 |
| 25 | 1 |
| 26 | 1 |
| 27 | 1 |
| 28 | 1 |
| 29 | 1 |
| 30 | 1 |
Humidity in June
Most of June feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, June lands in the dry band about 92% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 94 | 94 | 94 | 94 | 94 | 94 | 94 | 95 | 95 | 95 | 95 | 95 | 94 | 94 | 94 | 94 | 94 | 93 | 93 | 92 | 90 | 90 | 89 | 88 | 87 | 87 | 86 | 85 | 85 | 85 |
| Comfortable (%) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 8 | 9 | 9 | 10 | 11 | 12 | 12 | 13 | 14 | 14 | 14 |
| Humid (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| 1 | 94 | 6 | 0 |
| 2 | 94 | 6 | 0 |
| 3 | 94 | 6 | 0 |
| 4 | 94 | 6 | 0 |
| 5 | 94 | 6 | 0 |
| 6 | 94 | 6 | 0 |
| 7 | 94 | 6 | 0 |
| 8 | 95 | 5 | 0 |
| 9 | 95 | 5 | 0 |
| 10 | 95 | 5 | 0 |
| 11 | 95 | 5 | 0 |
| 12 | 95 | 5 | 0 |
| 13 | 94 | 6 | 0 |
| 14 | 94 | 6 | 0 |
| 15 | 94 | 6 | 0 |
| 16 | 94 | 6 | 0 |
| 17 | 94 | 6 | 0 |
| 18 | 93 | 7 | 0 |
| 19 | 93 | 7 | 0 |
| 20 | 92 | 8 | 0 |
| 21 | 90 | 9 | 1 |
| 22 | 90 | 9 | 1 |
| 23 | 89 | 10 | 1 |
| 24 | 88 | 11 | 1 |
| 25 | 87 | 12 | 1 |
| 26 | 87 | 12 | 1 |
| 27 | 86 | 13 | 1 |
| 28 | 85 | 14 | 1 |
| 29 | 85 | 14 | 1 |
| 30 | 85 | 14 | 1 |
Wind in June
Winds average 8 mph in June, the windiest month of the year.
Across June, daily wind ranges from about 8 mph on the calmest days to 8 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 8 | light breeze |
| 2 | 8 | light breeze |
| 3 | 8 | light breeze |
| 4 | 8 | light breeze |
| 5 | 8 | light breeze |
| 6 | 8 | light breeze |
| 7 | 8 | light breeze |
| 8 | 8 | light breeze |
| 9 | 8 | light breeze |
| 10 | 8 | light breeze |
| 11 | 8 | light breeze |
| 12 | 8 | light breeze |
| 13 | 8 | light breeze |
| 14 | 8 | light breeze |
| 15 | 8 | light breeze |
| 16 | 8 | light breeze |
| 17 | 8 | light breeze |
| 18 | 8 | light breeze |
| 19 | 8 | light breeze |
| 20 | 8 | light breeze |
| 21 | 8 | light breeze |
| 22 | 8 | light breeze |
| 23 | 8 | light breeze |
| 24 | 8 | light breeze |
| 25 | 8 | light breeze |
| 26 | 8 | light breeze |
| 27 | 8 | light breeze |
| 28 | 8 | light breeze |
| 29 | 8 | light breeze |
| 30 | 8 | light breeze |
Sunrise & sunset in June
Daylight runs from about 14 h 24 min at the start of June to 14 h 36 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 12 minutes over June. Sunrise moves from 4:53 AM to 4:53 AM, and sunset from 7:20 PM to 7:31 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 14.4 | 14.5 | 14.5 | 14.5 | 14.5 | 14.5 | 14.5 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.7 | 14.7 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 |
| Sunrise (AM) | 4:53 | 4:53 | 4:52 | 4:52 | 4:52 | 4:52 | 4:51 | 4:51 | 4:51 | 4:51 | 4:51 | 4:50 | 4:50 | 4:50 | 4:50 | 4:50 | 4:50 | 4:50 | 4:51 | 4:51 | 4:51 | 4:51 | 4:51 | 4:51 | 4:52 | 4:52 | 4:52 | 4:53 | 4:53 | 4:53 |
| Sunset (PM) | 7:20 | 7:21 | 7:21 | 7:22 | 7:23 | 7:23 | 7:24 | 7:24 | 7:25 | 7:25 | 7:26 | 7:26 | 7:27 | 7:27 | 7:28 | 7:28 | 7:29 | 7:29 | 7:29 | 7:30 | 7:30 | 7:30 | 7:30 | 7:30 | 7:31 | 7:31 | 7:31 | 7:31 | 7:31 | 7:31 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.4 | 4:53 | 7:20 |
| 2 | 14.5 | 4:53 | 7:21 |
| 3 | 14.5 | 4:52 | 7:21 |
| 4 | 14.5 | 4:52 | 7:22 |
| 5 | 14.5 | 4:52 | 7:23 |
| 6 | 14.5 | 4:52 | 7:23 |
| 7 | 14.5 | 4:51 | 7:24 |
| 8 | 14.6 | 4:51 | 7:24 |
| 9 | 14.6 | 4:51 | 7:25 |
| 10 | 14.6 | 4:51 | 7:25 |
| 11 | 14.6 | 4:51 | 7:26 |
| 12 | 14.6 | 4:50 | 7:26 |
| 13 | 14.6 | 4:50 | 7:27 |
| 14 | 14.6 | 4:50 | 7:27 |
| 15 | 14.6 | 4:50 | 7:28 |
| 16 | 14.6 | 4:50 | 7:28 |
| 17 | 14.6 | 4:50 | 7:29 |
| 18 | 14.6 | 4:50 | 7:29 |
| 19 | 14.6 | 4:51 | 7:29 |
| 20 | 14.6 | 4:51 | 7:30 |
| 21 | 14.6 | 4:51 | 7:30 |
| 22 | 14.7 | 4:51 | 7:30 |
| 23 | 14.7 | 4:51 | 7:30 |
| 24 | 14.6 | 4:51 | 7:30 |
| 25 | 14.6 | 4:52 | 7:31 |
| 26 | 14.6 | 4:52 | 7:31 |
| 27 | 14.6 | 4:52 | 7:31 |
| 28 | 14.6 | 4:53 | 7:31 |
| 29 | 14.6 | 4:53 | 7:31 |
| 30 | 14.6 | 4:53 | 7:31 |
Solar energy in June
Average shortwave solar energy reaching the ground each day in June, about 7.96 kWh/m² — the sunniest month for solar.
For context, solar energy here swings from a low near 2.13 kWh/m² to a high of 7.96 kWh/m² in June across the year — June's 7.96 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 7.6 | 7.6 | 7.7 | 7.7 | 7.7 | 7.8 | 7.8 | 7.8 | 7.9 | 7.9 | 7.9 | 8.0 | 8.0 | 8.0 | 8.0 | 8.0 | 8.1 | 8.1 | 8.1 | 8.1 | 8.1 | 8.1 | 8.1 | 8.1 | 8.1 | 8.1 | 8.1 | 8.1 | 8.1 | 8.1 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 7.6 | Intense |
| 2 | 7.6 | Intense |
| 3 | 7.7 | Intense |
| 4 | 7.7 | Intense |
| 5 | 7.7 | Intense |
| 6 | 7.8 | Intense |
| 7 | 7.8 | Intense |
| 8 | 7.8 | Intense |
| 9 | 7.9 | Intense |
| 10 | 7.9 | Intense |
| 11 | 7.9 | Intense |
| 12 | 8.0 | Intense |
| 13 | 8.0 | Intense |
| 14 | 8.0 | Intense |
| 15 | 8.0 | Intense |
| 16 | 8.0 | Intense |
| 17 | 8.1 | Intense |
| 18 | 8.1 | Intense |
| 19 | 8.1 | Intense |
| 20 | 8.1 | Intense |
| 21 | 8.1 | Intense |
| 22 | 8.1 | Intense |
| 23 | 8.1 | Intense |
| 24 | 8.1 | Intense |
| 25 | 8.1 | Intense |
| 26 | 8.1 | Intense |
| 27 | 8.1 | Intense |
| 28 | 8.1 | Intense |
| 29 | 8.1 | Intense |
| 30 | 8.1 | Intense |
Hazard calendar for Vallejo
None of Vallejo's seasonal hazards are active in June. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Vallejo's rainy season runs November–March, when most of the year's rain falls.
Is June a good time to visit Vallejo?
Our two travel scores rate June for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
June is one of the better times to visit Vallejo for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Vallejo in June
From June's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In June, Vallejo sees daytime highs around 79°F and nights near 55°F. Pack sun protection. Worth having: light clothes.
Sea temperature near Vallejo in June
The nearest coast averages about 54°F in June — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 25 mi away) is warmest in September at about 58°F and coldest in April near 53°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) | 53 | 53 | 54 | 53 | 53 | 54 | 56 | 58 | 58 | 57 | 55 | 54 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 53 | Bracing |
| Feb | 53 | Bracing |
| Mar | 54 | Bracing |
| Apr | 53 | Bracing |
| May | 53 | Bracing |
| Jun | 54 | Bracing |
| Jul | 56 | Bracing |
| Aug | 58 | Bracing |
| Sep | 58 | Bracing |
| Oct | 57 | Bracing |
| Nov | 55 | Bracing |
| Dec | 54 | Bracing |
UV index in Vallejo in June
Clear-sky midday UV in June peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Vallejo peaks around July 11 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 4 | 5 | 6 | 8 | 10 | 10 | 10 | 6 | 5 | 2 | 2 |
| Level | Moderate | Moderate | Moderate | High | Very high | Extreme | Extreme | Very high | High | High | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 4 | Moderate |
| Mar | 5 | Moderate |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 10 | Extreme |
| Jul | 10 | Extreme |
| Aug | 10 | Very high |
| Sep | 6 | High |
| Oct | 5 | High |
| Nov | 2 | Moderate |
| Dec | 2 | Low |
Air quality in Vallejo in June
Average fine-particle pollution (PM2.5) through the year — so you can see where June falls, not just the annual average.
Air quality in Vallejo is worst in September — around 29 µg/m³ PM2.5 (moderate), about 4.2× the cleanest month (June, 7 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) | 13 | 13 | 13 | 10 | 8 | 7 | 10 | 25 | 29 | 27 | 16 | 12 |
| Level | Moderate | Moderate | Moderate | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 13 | Moderate |
| Feb | 13 | Moderate |
| Mar | 13 | Moderate |
| Apr | 10 | Good |
| May | 8 | Good |
| Jun | 7 | Good |
| Jul | 10 | Good |
| Aug | 25 | Moderate |
| Sep | 29 | Moderate |
| Oct | 27 | Moderate |
| Nov | 16 | Moderate |
| Dec | 12 | Good |
Where is Vallejo?
Vallejo sits at 38.1°N, 122.3°W, 69 ft above sea level, in United States. The nearest listed city is American Canyon, 5.0 mi away.
Topography around Vallejo
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Vallejo.
Within 2 miles, the terrain around Vallejo has only modest variations in elevation — a maximum elevation change of 312 ft around an average of 39 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,473 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,459 ft.
The land around Vallejo is covered by artificial surfaces (51%) within 2 miles, water (34%) and grassland (33%) within 10 miles, and grassland (29%), trees (24%) and water (24%) 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 Vallejo (38.1041°, -122.2566°, elevation 69 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).