Riverside weather in August
In August, Riverside sees average daytime highs of 82°F and overnight lows near 65°F, with 2.9 in of rain across 9.5 wet days and about 13.6 hours of daylight. It is the 2nd-warmest and 9th-wettest month of the year here.
Day-to-day highs hold fairly steady near 82°F through the month. The sky is clear or mostly clear about 36% of the time in August, and the air most often feels muggy.
Daylight stretches from about 14 h 06 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is Riverside's 2nd-clearest and 12th-windiest month. For the whole year in context, see Riverside's year-round climate.
- Daytime high
- 82°
- 2nd warmest
- Overnight low
- 65°
- 11th coldest
- Rainfall
- 2.9 in
- 9.5 wet days
- Daylight
- 13 h 36 min
- 5:53 AM – 7:28 PM
- Cloud cover
- 54%
- 2nd clearest
- Wind
- 6 mph
- 12th windiest
- Solar energy
- 5.6 kWh/m²
- Travel score
- 6.3
- out of 10
Riverside is city in Ohio, United States.
- Density
- 988/km²
- people per km²
- Founded
- 1995
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in August
Day-to-day highs hold fairly steady near 82°F through the month.
A typical August day in Riverside reaches about 82°F in the afternoon and slips back to 65°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 75°F and 89°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) | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 81 | 81 | 81 |
| Avg low (°F) | 66 | 66 | 66 | 66 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 63 | 63 | 63 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 83 | 66 |
| 2 | 83 | 66 |
| 3 | 83 | 66 |
| 4 | 83 | 66 |
| 5 | 83 | 65 |
| 6 | 83 | 65 |
| 7 | 83 | 65 |
| 8 | 83 | 65 |
| 9 | 83 | 65 |
| 10 | 83 | 65 |
| 11 | 82 | 65 |
| 12 | 82 | 65 |
| 13 | 82 | 65 |
| 14 | 82 | 65 |
| 15 | 82 | 65 |
| 16 | 82 | 65 |
| 17 | 82 | 65 |
| 18 | 82 | 65 |
| 19 | 82 | 65 |
| 20 | 82 | 64 |
| 21 | 82 | 64 |
| 22 | 82 | 64 |
| 23 | 82 | 64 |
| 24 | 82 | 64 |
| 25 | 82 | 64 |
| 26 | 82 | 64 |
| 27 | 82 | 64 |
| 28 | 82 | 64 |
| 29 | 81 | 63 |
| 30 | 81 | 63 |
| 31 | 81 | 63 |
How August really feels in Riverside
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.
Riverside weather by month
How August compares with the rest of the year at a glance. August is the 2nd-warmest and 9th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 37° / 23° | 3.2 | 10.2 | 4.8 | 9.5 | 0.0 |
| Feb | 40° / 25° | 2.7 | 9.3 | 4.2 | 10.4 | 0.2 |
| Mar | 50° / 33° | 3.8 | 11.3 | 2.3 | 11.7 | 2.2 |
| Apr | 63° / 44° | 4.4 | 12.3 | 0.5 | 13 | 5.1 |
| May | 72° / 54° | 4.3 | 12.7 | 0 | 14.2 | 6.2 |
| Jun | 80° / 63° | 3.8 | 11.7 | 0 | 14.8 | 6.1 |
| Jul | 83° / 66° | 3.2 | 10.7 | 0 | 14.5 | 5.7 |
| Aug | 82° / 65° | 2.9 | 9.5 | 0 | 13.6 | 6.3 |
| Sep | 76° / 57° | 2.5 | 7.8 | 0 | 12.3 | 7.2 |
| Oct | 64° / 46° | 2.8 | 8.5 | 0.2 | 10.9 | 5.9 |
| Nov | 51° / 36° | 3.1 | 8.9 | 1 | 9.8 | 2.6 |
| Dec | 41° / 28° | 3.4 | 9.9 | 3.1 | 9.2 | 0.2 |
Cloud cover in August
The sky is clear or mostly clear about 36% of the time in August.
Beyond those clear spells, partly cloudy skies cover about 20% of August, with mostly cloudy or overcast conditions the remaining 44%.
| 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 (%) | 55 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 55 | 55 | 56 | 56 | 57 | 57 | 58 | 58 | 57 | 58 | 58 | 57 | 58 | 58 | 58 | 58 | 58 | 58 | 59 |
| Cloudier (%) | 45 | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 45 | 45 | 44 | 44 | 43 | 43 | 42 | 42 | 43 | 42 | 42 | 43 | 42 | 42 | 42 | 42 | 42 | 42 | 41 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 55 | 45 |
| 2 | 54 | 46 |
| 3 | 54 | 46 |
| 4 | 54 | 46 |
| 5 | 54 | 46 |
| 6 | 54 | 46 |
| 7 | 54 | 46 |
| 8 | 54 | 46 |
| 9 | 54 | 46 |
| 10 | 54 | 46 |
| 11 | 54 | 46 |
| 12 | 54 | 46 |
| 13 | 55 | 45 |
| 14 | 55 | 45 |
| 15 | 56 | 44 |
| 16 | 56 | 44 |
| 17 | 57 | 43 |
| 18 | 57 | 43 |
| 19 | 58 | 42 |
| 20 | 58 | 42 |
| 21 | 57 | 43 |
| 22 | 58 | 42 |
| 23 | 58 | 42 |
| 24 | 57 | 43 |
| 25 | 58 | 42 |
| 26 | 58 | 42 |
| 27 | 58 | 42 |
| 28 | 58 | 42 |
| 29 | 58 | 42 |
| 30 | 58 | 42 |
| 31 | 59 | 41 |
Chance of precipitation in August
Riverside gets around 2.9 in of rain over 9.5 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 31% and peaks near 33% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 33 | 33 | 33 | 33 | 33 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 31 | 31 | 31 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 28 | 28 | 28 | 27 | 27 |
| Rain chance (%) | |
|---|---|
| 1 | 33 |
| 2 | 33 |
| 3 | 33 |
| 4 | 33 |
| 5 | 33 |
| 6 | 32 |
| 7 | 32 |
| 8 | 32 |
| 9 | 32 |
| 10 | 32 |
| 11 | 32 |
| 12 | 32 |
| 13 | 32 |
| 14 | 32 |
| 15 | 32 |
| 16 | 31 |
| 17 | 31 |
| 18 | 31 |
| 19 | 30 |
| 20 | 30 |
| 21 | 30 |
| 22 | 30 |
| 23 | 30 |
| 24 | 30 |
| 25 | 29 |
| 26 | 29 |
| 27 | 28 |
| 28 | 28 |
| 29 | 28 |
| 30 | 27 |
| 31 | 27 |
Humidity in August
Most of August feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, August lands in the muggy band about 27% of days. Sticky, muggy-or-worse air turns up on roughly 38% of them.
| 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 (%) | 9 | 9 | 9 | 10 | 10 | 10 | 11 | 11 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 16 | 17 | 18 | 18 | 19 | 20 |
| Comfortable (%) | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 23 | 23 |
| Humid (%) | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 23 |
| Muggy (%) | 29 | 28 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 27 | 27 | 26 |
| Oppressive (%) | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 9 | 23 | 27 | 29 | 13 |
| 2 | 9 | 23 | 27 | 28 | 13 |
| 3 | 9 | 23 | 27 | 27 | 13 |
| 4 | 10 | 23 | 27 | 27 | 13 |
| 5 | 10 | 24 | 27 | 26 | 13 |
| 6 | 10 | 24 | 27 | 26 | 12 |
| 7 | 11 | 24 | 27 | 26 | 12 |
| 8 | 11 | 24 | 27 | 25 | 12 |
| 9 | 12 | 24 | 26 | 25 | 12 |
| 10 | 12 | 24 | 26 | 25 | 12 |
| 11 | 12 | 25 | 25 | 25 | 12 |
| 12 | 13 | 25 | 25 | 25 | 12 |
| 13 | 13 | 25 | 24 | 26 | 12 |
| 14 | 13 | 25 | 24 | 26 | 12 |
| 15 | 13 | 25 | 24 | 27 | 11 |
| 16 | 13 | 25 | 24 | 27 | 11 |
| 17 | 13 | 25 | 24 | 27 | 10 |
| 18 | 13 | 25 | 24 | 28 | 10 |
| 19 | 14 | 25 | 24 | 28 | 10 |
| 20 | 14 | 24 | 24 | 28 | 10 |
| 21 | 14 | 24 | 24 | 29 | 10 |
| 22 | 14 | 24 | 24 | 29 | 10 |
| 23 | 14 | 23 | 24 | 29 | 9 |
| 24 | 15 | 23 | 24 | 29 | 9 |
| 25 | 15 | 23 | 24 | 29 | 9 |
| 26 | 16 | 22 | 24 | 29 | 9 |
| 27 | 17 | 22 | 24 | 28 | 9 |
| 28 | 18 | 22 | 24 | 28 | 9 |
| 29 | 18 | 22 | 24 | 27 | 8 |
| 30 | 19 | 23 | 23 | 27 | 8 |
| 31 | 20 | 23 | 23 | 26 | 8 |
Wind in August
Winds average 6 mph in August, the calmest month.
Across August, daily wind ranges from about 5 mph on the calmest days to 6 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 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| 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 | 6 | calm |
| 16 | 6 | calm |
| 17 | 6 | calm |
| 18 | 6 | calm |
| 19 | 6 | calm |
| 20 | 6 | calm |
| 21 | 6 | calm |
| 22 | 6 | calm |
| 23 | 6 | calm |
| 24 | 6 | calm |
| 25 | 6 | calm |
| 26 | 6 | calm |
| 27 | 6 | calm |
| 28 | 6 | calm |
| 29 | 6 | calm |
| 30 | 6 | calm |
| 31 | 6 | calm |
Sunrise & sunset in August
Daylight runs from about 14 h 06 min at the start of August to 13 hours by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 66 minutes over August. Sunrise moves from 5:39 AM to 6:08 AM, and sunset from 7:46 PM to 7:05 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) | 14.1 | 14.1 | 14.1 | 14.0 | 14.0 | 14.0 | 13.9 | 13.9 | 13.8 | 13.8 | 13.8 | 13.7 | 13.7 | 13.7 | 13.6 | 13.6 | 13.5 | 13.5 | 13.5 | 13.4 | 13.4 | 13.3 | 13.3 | 13.3 | 13.2 | 13.2 | 13.1 | 13.1 | 13.0 | 13.0 | 13.0 |
| Sunrise (AM) | 5:39 | 5:40 | 5:41 | 5:42 | 5:43 | 5:44 | 5:45 | 5:45 | 5:46 | 5:47 | 5:48 | 5:49 | 5:50 | 5:51 | 5:52 | 5:53 | 5:54 | 5:55 | 5:56 | 5:57 | 5:58 | 5:59 | 6:00 | 6:01 | 6:02 | 6:03 | 6:04 | 6:05 | 6:06 | 6:07 | 6:08 |
| Sunset (PM) | 7:46 | 7:45 | 7:44 | 7:43 | 7:42 | 7:41 | 7:40 | 7:38 | 7:37 | 7:36 | 7:35 | 7:33 | 7:32 | 7:31 | 7:29 | 7:28 | 7:27 | 7:25 | 7:24 | 7:22 | 7:21 | 7:19 | 7:18 | 7:16 | 7:15 | 7:13 | 7:12 | 7:10 | 7:09 | 7:07 | 7:05 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.1 | 5:39 | 7:46 |
| 2 | 14.1 | 5:40 | 7:45 |
| 3 | 14.1 | 5:41 | 7:44 |
| 4 | 14.0 | 5:42 | 7:43 |
| 5 | 14.0 | 5:43 | 7:42 |
| 6 | 14.0 | 5:44 | 7:41 |
| 7 | 13.9 | 5:45 | 7:40 |
| 8 | 13.9 | 5:45 | 7:38 |
| 9 | 13.8 | 5:46 | 7:37 |
| 10 | 13.8 | 5:47 | 7:36 |
| 11 | 13.8 | 5:48 | 7:35 |
| 12 | 13.7 | 5:49 | 7:33 |
| 13 | 13.7 | 5:50 | 7:32 |
| 14 | 13.7 | 5:51 | 7:31 |
| 15 | 13.6 | 5:52 | 7:29 |
| 16 | 13.6 | 5:53 | 7:28 |
| 17 | 13.5 | 5:54 | 7:27 |
| 18 | 13.5 | 5:55 | 7:25 |
| 19 | 13.5 | 5:56 | 7:24 |
| 20 | 13.4 | 5:57 | 7:22 |
| 21 | 13.4 | 5:58 | 7:21 |
| 22 | 13.3 | 5:59 | 7:19 |
| 23 | 13.3 | 6:00 | 7:18 |
| 24 | 13.3 | 6:01 | 7:16 |
| 25 | 13.2 | 6:02 | 7:15 |
| 26 | 13.2 | 6:03 | 7:13 |
| 27 | 13.1 | 6:04 | 7:12 |
| 28 | 13.1 | 6:05 | 7:10 |
| 29 | 13.0 | 6:06 | 7:09 |
| 30 | 13.0 | 6:07 | 7:07 |
| 31 | 13.0 | 6:08 | 7:05 |
Solar energy in August
Average shortwave solar energy reaching the ground each day in August, about 5.6 kWh/m².
For context, solar energy here swings from a low near 1.63 kWh/m² to a high of 6.22 kWh/m² in June across the year — August's 5.6 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) | 5.9 | 5.9 | 5.9 | 5.9 | 5.8 | 5.8 | 5.8 | 5.8 | 5.8 | 5.7 | 5.7 | 5.7 | 5.7 | 5.6 | 5.6 | 5.6 | 5.6 | 5.5 | 5.5 | 5.5 | 5.5 | 5.4 | 5.4 | 5.4 | 5.3 | 5.3 | 5.3 | 5.2 | 5.2 | 5.2 | 5.1 |
| Level | 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 | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.9 | Bright |
| 2 | 5.9 | Bright |
| 3 | 5.9 | Bright |
| 4 | 5.9 | Bright |
| 5 | 5.8 | Bright |
| 6 | 5.8 | Bright |
| 7 | 5.8 | Bright |
| 8 | 5.8 | Bright |
| 9 | 5.8 | Bright |
| 10 | 5.7 | Bright |
| 11 | 5.7 | Bright |
| 12 | 5.7 | Bright |
| 13 | 5.7 | Bright |
| 14 | 5.6 | Bright |
| 15 | 5.6 | Bright |
| 16 | 5.6 | Bright |
| 17 | 5.6 | Bright |
| 18 | 5.5 | Bright |
| 19 | 5.5 | Bright |
| 20 | 5.5 | Bright |
| 21 | 5.5 | Bright |
| 22 | 5.4 | Bright |
| 23 | 5.4 | Bright |
| 24 | 5.4 | Bright |
| 25 | 5.3 | Bright |
| 26 | 5.3 | Bright |
| 27 | 5.3 | Bright |
| 28 | 5.2 | Bright |
| 29 | 5.2 | Bright |
| 30 | 5.2 | Bright |
| 31 | 5.1 | Bright |
Is August a good time to visit Riverside?
Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
August is a reasonable time to visit Riverside for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Riverside in August
From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In August, Riverside sees daytime highs around 82°F and nights near 65°F. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.
UV index in Riverside in August
Clear-sky midday UV in August peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Riverside peaks around June 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (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 | 3 | 5 | 6 | 8 | 10 | 9 | 8 | 6 | 3 | 3 | 2 |
| Level | Low | Moderate | Moderate | High | Very high | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 10 | Very high |
| Jul | 9 | Very high |
| Aug | 8 | Very high |
| Sep | 6 | High |
| Oct | 3 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Air quality in Riverside 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 Riverside is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 8 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) | 10 | 12 | 12 | 12 | 15 | 17 | 17 | 15 | 12 | 8 | 8 | 9 |
| Level | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 12 | Good |
| Mar | 12 | Good |
| Apr | 12 | Moderate |
| May | 15 | Moderate |
| Jun | 17 | Moderate |
| Jul | 17 | Moderate |
| Aug | 15 | Moderate |
| Sep | 12 | Good |
| Oct | 8 | Good |
| Nov | 8 | Good |
| Dec | 9 | Good |
Where is Riverside?
Riverside sits at 39.8°N, 84.1°W, 781 ft above sea level, in United States. The nearest listed city is Dayton, 3.7 mi away.
Topography around Riverside
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Riverside.
Within 2 miles, the terrain around Riverside has only modest variations in elevation — a maximum elevation change of 233 ft around an average of 807 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 420 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,083 ft.
The land around Riverside is covered by trees (32%), grassland (31%) and artificial surfaces (30%) within 2 miles, trees (42%) and grassland (26%) within 10 miles, and cropland (60%) and trees (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 Riverside (39.7798°, -84.1241°, elevation 781 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).