Orinda weather in October
In October, Orinda sees average daytime highs of 75°F and overnight lows near 52°F, with 0.9 in of rain across 3 wet days and about 11 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.
Highs ease over the month, from about 78°F in the first days to 71°F by the end. The sky is clear or mostly clear about 67% of the time in October, and the air most often feels dry.
Daylight stretches from about 11 h 36 min at the start of October to 10 h 24 min by month's end. Set against the rest of the year, October is Orinda's 5th-clearest and 10th-windiest month. For the whole year in context, see Orinda's year-round climate.
- Daytime high
- 75°
- 5th warmest
- Overnight low
- 52°
- 8th coldest
- Rainfall
- 0.9 in
- 3 wet days
- Daylight
- 11 hours
- 6:24 AM – 5:24 PM
- Cloud cover
- 29%
- 5th clearest
- Wind
- 5 mph
- 10th windiest
- Solar energy
- 4.2 kWh/m²
- Travel score
- 8.5
- out of 10
Orinda is city in Contra Costa County, California, United States.
- Density
- 586/km²
- people per km²
- Founded
- 1985
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in October
Highs ease over the month, from about 78°F in the first days to 71°F by the end.
A typical October day in Orinda reaches about 75°F in the afternoon and slips back to 52°F overnight — a 23°F spread between the day's warmth and the night's chill. On most days the high lands between 66°F and 86°F. Set against its neighbours, October runs about 5°F cooler than September and about 11°F warmer than November.
| 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) | 79 | 79 | 78 | 78 | 78 | 78 | 78 | 78 | 77 | 77 | 77 | 77 | 76 | 76 | 76 | 76 | 75 | 75 | 75 | 74 | 74 | 74 | 73 | 73 | 73 | 72 | 72 | 71 | 71 | 71 | 70 |
| Avg low (°F) | 54 | 54 | 54 | 54 | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 52 | 52 | 52 | 52 | 52 | 52 | 51 | 51 | 51 | 51 | 51 | 51 | 50 | 50 | 50 | 50 | 49 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 79 | 54 |
| 2 | 79 | 54 |
| 3 | 78 | 54 |
| 4 | 78 | 54 |
| 5 | 78 | 53 |
| 6 | 78 | 53 |
| 7 | 78 | 53 |
| 8 | 78 | 53 |
| 9 | 77 | 53 |
| 10 | 77 | 53 |
| 11 | 77 | 53 |
| 12 | 77 | 53 |
| 13 | 76 | 53 |
| 14 | 76 | 53 |
| 15 | 76 | 52 |
| 16 | 76 | 52 |
| 17 | 75 | 52 |
| 18 | 75 | 52 |
| 19 | 75 | 52 |
| 20 | 74 | 52 |
| 21 | 74 | 51 |
| 22 | 74 | 51 |
| 23 | 73 | 51 |
| 24 | 73 | 51 |
| 25 | 73 | 51 |
| 26 | 72 | 51 |
| 27 | 72 | 50 |
| 28 | 71 | 50 |
| 29 | 71 | 50 |
| 30 | 71 | 50 |
| 31 | 70 | 49 |
Orinda weather by month
How October compares with the rest of the year at a glance. October is the 5th-warmest and 7th-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 | 10 | 6.5 |
| Dec | 57° / 42° | 3.7 | 9.3 | 9.4 | 4.3 |
Cloud cover in October
The sky is clear or mostly clear about 67% of the time in October.
Beyond those clear spells, partly cloudy skies cover about 11% of October, with mostly cloudy or overcast conditions the remaining 22%. 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 (%) | 86 | 85 | 85 | 84 | 84 | 83 | 83 | 82 | 81 | 80 | 80 | 80 | 80 | 78 | 78 | 78 | 77 | 77 | 77 | 77 | 76 | 76 | 76 | 75 | 75 | 75 | 73 | 73 | 72 | 72 | 71 |
| Cloudier (%) | 14 | 15 | 15 | 16 | 16 | 17 | 17 | 18 | 19 | 20 | 20 | 20 | 20 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 25 | 25 | 25 | 27 | 27 | 28 | 28 | 29 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 86 | 14 |
| 2 | 85 | 15 |
| 3 | 85 | 15 |
| 4 | 84 | 16 |
| 5 | 84 | 16 |
| 6 | 83 | 17 |
| 7 | 83 | 17 |
| 8 | 82 | 18 |
| 9 | 81 | 19 |
| 10 | 80 | 20 |
| 11 | 80 | 20 |
| 12 | 80 | 20 |
| 13 | 80 | 20 |
| 14 | 78 | 22 |
| 15 | 78 | 22 |
| 16 | 78 | 22 |
| 17 | 77 | 23 |
| 18 | 77 | 23 |
| 19 | 77 | 23 |
| 20 | 77 | 23 |
| 21 | 76 | 24 |
| 22 | 76 | 24 |
| 23 | 76 | 24 |
| 24 | 75 | 25 |
| 25 | 75 | 25 |
| 26 | 75 | 25 |
| 27 | 73 | 27 |
| 28 | 73 | 27 |
| 29 | 72 | 28 |
| 30 | 72 | 28 |
| 31 | 71 | 29 |
Chance of precipitation in October
Orinda gets around 0.9 in of rain over 3 wet days in October. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 9% and peaks near 15% 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 (%) | 4 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 9 | 10 | 10 | 11 | 12 | 12 | 13 | 13 | 14 | 14 | 14 | 15 | 15 |
| Rain chance (%) | |
|---|---|
| 1 | 4 |
| 2 | 5 |
| 3 | 5 |
| 4 | 5 |
| 5 | 6 |
| 6 | 6 |
| 7 | 6 |
| 8 | 6 |
| 9 | 7 |
| 10 | 7 |
| 11 | 7 |
| 12 | 7 |
| 13 | 7 |
| 14 | 7 |
| 15 | 8 |
| 16 | 8 |
| 17 | 8 |
| 18 | 9 |
| 19 | 9 |
| 20 | 10 |
| 21 | 10 |
| 22 | 11 |
| 23 | 12 |
| 24 | 12 |
| 25 | 13 |
| 26 | 13 |
| 27 | 14 |
| 28 | 14 |
| 29 | 14 |
| 30 | 15 |
| 31 | 15 |
Humidity in October
Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, October lands in the dry band about 90% 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 (%) | 87 | 88 | 88 | 89 | 89 | 89 | 89 | 89 | 90 | 90 | 90 | 89 | 89 | 89 | 89 | 89 | 89 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 92 | 92 | 92 | 92 | 92 | 92 | 93 |
| Comfortable (%) | 12 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 7 |
| Humid (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| 1 | 87 | 12 | 1 |
| 2 | 88 | 11 | 1 |
| 3 | 88 | 11 | 1 |
| 4 | 89 | 10 | 1 |
| 5 | 89 | 10 | 1 |
| 6 | 89 | 10 | 1 |
| 7 | 89 | 10 | 1 |
| 8 | 89 | 10 | 1 |
| 9 | 90 | 9 | 1 |
| 10 | 90 | 9 | 1 |
| 11 | 90 | 9 | 1 |
| 12 | 89 | 10 | 1 |
| 13 | 89 | 10 | 1 |
| 14 | 89 | 10 | 1 |
| 15 | 89 | 10 | 1 |
| 16 | 89 | 10 | 1 |
| 17 | 89 | 10 | 1 |
| 18 | 90 | 9 | 1 |
| 19 | 90 | 9 | 1 |
| 20 | 90 | 9 | 1 |
| 21 | 90 | 9 | 1 |
| 22 | 90 | 9 | 1 |
| 23 | 90 | 9 | 1 |
| 24 | 90 | 9 | 1 |
| 25 | 92 | 8 | 0 |
| 26 | 92 | 8 | 0 |
| 27 | 92 | 8 | 0 |
| 28 | 92 | 8 | 0 |
| 29 | 92 | 8 | 0 |
| 30 | 92 | 8 | 0 |
| 31 | 93 | 7 | 0 |
Wind in October
Winds average 5 mph in October.
Across October, daily wind ranges from about 5 mph on the calmest days to 5 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) | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 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 | 5 | calm |
| 2 | 5 | calm |
| 3 | 5 | calm |
| 4 | 5 | calm |
| 5 | 5 | calm |
| 6 | 5 | calm |
| 7 | 5 | calm |
| 8 | 5 | calm |
| 9 | 5 | calm |
| 10 | 5 | calm |
| 11 | 5 | calm |
| 12 | 5 | calm |
| 13 | 5 | calm |
| 14 | 5 | calm |
| 15 | 5 | calm |
| 16 | 5 | calm |
| 17 | 5 | calm |
| 18 | 5 | calm |
| 19 | 5 | calm |
| 20 | 5 | calm |
| 21 | 5 | calm |
| 22 | 5 | calm |
| 23 | 5 | calm |
| 24 | 5 | calm |
| 25 | 5 | calm |
| 26 | 5 | calm |
| 27 | 5 | calm |
| 28 | 5 | calm |
| 29 | 5 | calm |
| 30 | 5 | calm |
| 31 | 5 | calm |
Sunrise & sunset in October
Daylight runs from about 11 h 36 min at the start of October to 10 h 24 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 72 minutes over October. Sunrise moves from 6:09 AM to 6:39 AM, and sunset from 5:46 PM to 5:05 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) | 11.6 | 11.6 | 11.5 | 11.5 | 11.4 | 11.4 | 11.4 | 11.3 | 11.3 | 11.2 | 11.2 | 11.2 | 11.1 | 11.1 | 11.0 | 11.0 | 11.0 | 10.9 | 10.9 | 10.8 | 10.8 | 10.8 | 10.7 | 10.7 | 10.7 | 10.6 | 10.6 | 10.5 | 10.5 | 10.5 | 10.4 |
| Sunrise (AM) | 6:09 | 6:10 | 6:11 | 6:12 | 6:13 | 6:14 | 6:15 | 6:16 | 6:17 | 6:18 | 6:19 | 6:20 | 6:21 | 6:22 | 6:23 | 6:24 | 6:25 | 6:26 | 6:27 | 6:28 | 6:29 | 6:30 | 6:31 | 6:32 | 6:33 | 6:34 | 6:35 | 6:36 | 6:37 | 6:38 | 6:39 |
| Sunset (PM) | 5:46 | 5:45 | 5:43 | 5:41 | 5:40 | 5:38 | 5:37 | 5:35 | 5:34 | 5:32 | 5:31 | 5:29 | 5:28 | 5:27 | 5:25 | 5:24 | 5:22 | 5:21 | 5:20 | 5:18 | 5:17 | 5:16 | 5:15 | 5:13 | 5:12 | 5:11 | 5:10 | 5:09 | 5:07 | 5:06 | 5:05 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.6 | 6:09 | 5:46 |
| 2 | 11.6 | 6:10 | 5:45 |
| 3 | 11.5 | 6:11 | 5:43 |
| 4 | 11.5 | 6:12 | 5:41 |
| 5 | 11.4 | 6:13 | 5:40 |
| 6 | 11.4 | 6:14 | 5:38 |
| 7 | 11.4 | 6:15 | 5:37 |
| 8 | 11.3 | 6:16 | 5:35 |
| 9 | 11.3 | 6:17 | 5:34 |
| 10 | 11.2 | 6:18 | 5:32 |
| 11 | 11.2 | 6:19 | 5:31 |
| 12 | 11.2 | 6:20 | 5:29 |
| 13 | 11.1 | 6:21 | 5:28 |
| 14 | 11.1 | 6:22 | 5:27 |
| 15 | 11.0 | 6:23 | 5:25 |
| 16 | 11.0 | 6:24 | 5:24 |
| 17 | 11.0 | 6:25 | 5:22 |
| 18 | 10.9 | 6:26 | 5:21 |
| 19 | 10.9 | 6:27 | 5:20 |
| 20 | 10.8 | 6:28 | 5:18 |
| 21 | 10.8 | 6:29 | 5:17 |
| 22 | 10.8 | 6:30 | 5:16 |
| 23 | 10.7 | 6:31 | 5:15 |
| 24 | 10.7 | 6:32 | 5:13 |
| 25 | 10.7 | 6:33 | 5:12 |
| 26 | 10.6 | 6:34 | 5:11 |
| 27 | 10.6 | 6:35 | 5:10 |
| 28 | 10.5 | 6:36 | 5:09 |
| 29 | 10.5 | 6:37 | 5:07 |
| 30 | 10.5 | 6:38 | 5:06 |
| 31 | 10.4 | 6:39 | 5:05 |
Solar energy in October
Average shortwave solar energy reaching the ground each day in October, about 4.2 kWh/m².
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 — October's 4.2 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 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.0 | 5.0 | 4.9 | 4.9 | 4.8 | 4.8 | 4.7 | 4.7 | 4.6 | 4.5 | 4.5 | 4.4 | 4.4 | 4.3 | 4.3 | 4.2 | 4.2 | 4.1 | 4.0 | 4.0 | 3.9 | 3.9 | 3.8 | 3.8 | 3.7 | 3.7 | 3.6 | 3.6 | 3.5 | 3.5 | 3.4 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.0 | Bright |
| 2 | 5.0 | Bright |
| 3 | 4.9 | Bright |
| 4 | 4.9 | Bright |
| 5 | 4.8 | Bright |
| 6 | 4.8 | Bright |
| 7 | 4.7 | Bright |
| 8 | 4.7 | Bright |
| 9 | 4.6 | Bright |
| 10 | 4.5 | Bright |
| 11 | 4.5 | Bright |
| 12 | 4.4 | Bright |
| 13 | 4.4 | Bright |
| 14 | 4.3 | Bright |
| 15 | 4.3 | Bright |
| 16 | 4.2 | Bright |
| 17 | 4.2 | Bright |
| 18 | 4.1 | Bright |
| 19 | 4.0 | Bright |
| 20 | 4.0 | Moderate |
| 21 | 3.9 | Moderate |
| 22 | 3.9 | Moderate |
| 23 | 3.8 | Moderate |
| 24 | 3.8 | Moderate |
| 25 | 3.7 | Moderate |
| 26 | 3.7 | Moderate |
| 27 | 3.6 | Moderate |
| 28 | 3.6 | Moderate |
| 29 | 3.5 | Moderate |
| 30 | 3.5 | Moderate |
| 31 | 3.4 | Moderate |
Hazard calendar for Orinda
None of Orinda's seasonal hazards are active in October. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Orinda's rainy season runs November–March, when most of the year's rain falls.
Is October a good time to visit Orinda?
Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
October is one of the better times to visit Orinda for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Orinda in October
From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In October, Orinda sees daytime highs around 75°F and nights near 52°F. Worth packing: light clothes. About 3 days see rain.
Sea temperature near Orinda in October
The nearest coast averages about 57°F in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 24 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 Orinda in October
Clear-sky midday UV in October peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Orinda peaks around June 23 at about 10 (very high) — 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 | 4 | 6 | 8 | 10 | 10 | 10 | 6 | 5 | 2 | 2 |
| Level | Moderate | Moderate | Moderate | High | Very high | Very high | Very high | Very high | High | High | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 4 | Moderate |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 10 | Very high |
| Jul | 10 | Very high |
| Aug | 10 | Very high |
| Sep | 6 | High |
| Oct | 5 | High |
| Nov | 2 | Moderate |
| Dec | 2 | Low |
Air quality in Orinda in October
Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.
Air quality in Orinda 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 Orinda?
Orinda sits at 37.9°N, 122.2°W, 495 ft above sea level, in United States. The nearest listed city is Lafayette, 3.1 mi away.
Topography around Orinda
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Orinda.
Within 2 miles, the terrain around Orinda has significant variations in elevation — a maximum elevation change of 1,398 ft around an average of 820 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,031 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,452 ft.
The land around Orinda is covered by trees (73%) within 2 miles, trees (43%), artificial surfaces (28%) and grassland (20%) within 10 miles, and grassland (27%), water (26%) and trees (23%) 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 Orinda (37.8772°, -122.1797°, elevation 495 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).