San Tan Valley weather in September
In September, San Tan Valley sees average daytime highs of 97°F and overnight lows near 74°F, with 1.0 in of rain across 3.2 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.
Highs ease over the month, from about 100°F in the first days to 94°F by the end. The sky is clear or mostly clear about 80% of the time in September, and the air most often feels dry.
Daylight stretches from about 12 h 42 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is San Tan Valley's 4th-clearest and 10th-windiest month. For the whole year in context, see San Tan Valley's year-round climate.
- Daytime high
- 97°
- 4th warmest
- Overnight low
- 74°
- 10th coldest
- Rainfall
- 1.0 in
- 3.2 wet days
- Daylight
- 12 h 12 min
- 6:14 AM – 6:26 PM
- Cloud cover
- 23%
- 4th clearest
- Wind
- 5 mph
- 10th windiest
- Solar energy
- 6.08 kWh/m²
- Travel score
- 2.5
- out of 10
San Tan Valley is unincorporated community in Pinal County, Arizona, United States of America.
- Founded
- 2009
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Highs ease over the month, from about 100°F in the first days to 94°F by the end.
A typical September day in San Tan Valley reaches about 97°F in the afternoon and slips back to 74°F overnight — a 23°F spread between the day's warmth and the night's chill. On most days the high lands between 89°F and 104°F. Set against its neighbours, September runs about 5°F cooler than August and about 10°F warmer than October.
| 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) | 100 | 100 | 100 | 99 | 99 | 99 | 99 | 98 | 98 | 98 | 98 | 98 | 98 | 97 | 97 | 97 | 97 | 96 | 96 | 96 | 96 | 96 | 96 | 95 | 95 | 95 | 94 | 94 | 94 | 93 |
| Avg low (°F) | 78 | 78 | 78 | 77 | 77 | 77 | 76 | 76 | 76 | 76 | 75 | 75 | 75 | 74 | 74 | 74 | 74 | 73 | 73 | 73 | 72 | 72 | 72 | 71 | 71 | 71 | 70 | 70 | 69 | 69 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 100 | 78 |
| 2 | 100 | 78 |
| 3 | 100 | 78 |
| 4 | 99 | 77 |
| 5 | 99 | 77 |
| 6 | 99 | 77 |
| 7 | 99 | 76 |
| 8 | 98 | 76 |
| 9 | 98 | 76 |
| 10 | 98 | 76 |
| 11 | 98 | 75 |
| 12 | 98 | 75 |
| 13 | 98 | 75 |
| 14 | 97 | 74 |
| 15 | 97 | 74 |
| 16 | 97 | 74 |
| 17 | 97 | 74 |
| 18 | 96 | 73 |
| 19 | 96 | 73 |
| 20 | 96 | 73 |
| 21 | 96 | 72 |
| 22 | 96 | 72 |
| 23 | 96 | 72 |
| 24 | 95 | 71 |
| 25 | 95 | 71 |
| 26 | 95 | 71 |
| 27 | 94 | 70 |
| 28 | 94 | 70 |
| 29 | 94 | 69 |
| 30 | 93 | 69 |
How September really feels in San Tan Valley
Once humidity and wind are folded in, September averages 30 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
San Tan Valley weather by month
How September compares with the rest of the year at a glance. September is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 65° / 43° | 1.5 | 4.2 | 10.1 | 7.2 |
| Feb | 69° / 46° | 1.6 | 4.4 | 10.8 | 7.5 |
| Mar | 75° / 50° | 1.1 | 3 | 11.7 | 8.4 |
| Apr | 83° / 56° | 0.3 | 1.4 | 12.8 | 7.5 |
| May | 92° / 65° | 0.2 | 0.7 | 13.7 | 4.4 |
| Jun | 101° / 74° | 0.1 | 0.6 | 14.2 | 1.0 |
| Jul | 103° / 81° | 0.8 | 3.8 | 14 | 0.3 |
| Aug | 101° / 80° | 1.1 | 4.9 | 13.2 | 0.8 |
| Sep | 97° / 74° | 1.0 | 3.2 | 12.2 | 2.5 |
| Oct | 87° / 62° | 0.7 | 2.4 | 11.2 | 6.3 |
| Nov | 74° / 51° | 0.7 | 2.5 | 10.3 | 8.5 |
| Dec | 65° / 43° | 1.3 | 4.3 | 9.8 | 7.0 |
Cloud cover in September
The sky is clear or mostly clear about 80% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 9% of September, with mostly cloudy or overcast conditions the remaining 11%. 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 (%) | 85 | 85 | 85 | 86 | 86 | 86 | 87 | 88 | 88 | 88 | 89 | 89 | 89 | 90 | 90 | 90 | 90 | 91 | 91 | 91 | 91 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 89 | 89 |
| Cloudier (%) | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 85 | 15 |
| 2 | 85 | 15 |
| 3 | 85 | 15 |
| 4 | 86 | 14 |
| 5 | 86 | 14 |
| 6 | 86 | 14 |
| 7 | 87 | 13 |
| 8 | 88 | 12 |
| 9 | 88 | 12 |
| 10 | 88 | 12 |
| 11 | 89 | 11 |
| 12 | 89 | 11 |
| 13 | 89 | 11 |
| 14 | 90 | 10 |
| 15 | 90 | 10 |
| 16 | 90 | 10 |
| 17 | 90 | 10 |
| 18 | 91 | 9 |
| 19 | 91 | 9 |
| 20 | 91 | 9 |
| 21 | 91 | 9 |
| 22 | 90 | 10 |
| 23 | 90 | 10 |
| 24 | 90 | 10 |
| 25 | 90 | 10 |
| 26 | 90 | 10 |
| 27 | 90 | 10 |
| 28 | 90 | 10 |
| 29 | 89 | 11 |
| 30 | 89 | 11 |
Chance of precipitation in September
San Tan Valley gets around 1.0 in of rain over 3.2 wet days in September. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 11% and peaks near 16% on the wettest days. The odds ease 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 12 | 12 | 11 | 11 | 10 | 9 | 9 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Rain chance (%) | |
|---|---|
| 1 | 16 |
| 2 | 16 |
| 3 | 16 |
| 4 | 16 |
| 5 | 16 |
| 6 | 15 |
| 7 | 15 |
| 8 | 15 |
| 9 | 14 |
| 10 | 14 |
| 11 | 14 |
| 12 | 13 |
| 13 | 13 |
| 14 | 12 |
| 15 | 12 |
| 16 | 11 |
| 17 | 11 |
| 18 | 10 |
| 19 | 9 |
| 20 | 9 |
| 21 | 8 |
| 22 | 8 |
| 23 | 7 |
| 24 | 7 |
| 25 | 7 |
| 26 | 7 |
| 27 | 7 |
| 28 | 7 |
| 29 | 7 |
| 30 | 7 |
Humidity in September
Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the dry band about 61% of days. Sticky, muggy-or-worse air turns up on roughly 8% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 38 | 39 | 40 | 41 | 43 | 44 | 46 | 47 | 49 | 50 | 52 | 55 | 56 | 58 | 61 | 62 | 64 | 66 | 69 | 71 | 72 | 74 | 76 | 76 | 79 | 80 | 81 | 82 | 83 | 83 |
| Comfortable (%) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 11 | 10 | 9 | 9 | 9 | 9 | 9 |
| Humid (%) | 21 | 20 | 20 | 20 | 19 | 19 | 18 | 18 | 17 | 17 | 16 | 15 | 15 | 14 | 13 | 13 | 12 | 11 | 10 | 9 | 9 | 8 | 7 | 7 | 6 | 6 | 5 | 5 | 5 | 5 |
| Muggy (%) | 15 | 14 | 13 | 12 | 12 | 11 | 10 | 9 | 9 | 8 | 8 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 3 | 3 | 3 |
| Oppressive (%) | 2 | 2 | 1 | 1 | 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 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 38 | 25 | 21 | 15 | 2 |
| 2 | 39 | 25 | 20 | 14 | 2 |
| 3 | 40 | 25 | 20 | 13 | 1 |
| 4 | 41 | 25 | 20 | 12 | 1 |
| 5 | 43 | 25 | 19 | 12 | 1 |
| 6 | 44 | 25 | 19 | 11 | 1 |
| 7 | 46 | 25 | 18 | 10 | 1 |
| 8 | 47 | 25 | 18 | 9 | 1 |
| 9 | 49 | 24 | 17 | 9 | 1 |
| 10 | 50 | 24 | 17 | 8 | 1 |
| 11 | 52 | 23 | 16 | 8 | 1 |
| 12 | 55 | 22 | 15 | 7 | 1 |
| 13 | 56 | 21 | 15 | 7 | 1 |
| 14 | 58 | 20 | 14 | 7 | 1 |
| 15 | 61 | 19 | 13 | 6 | 1 |
| 16 | 62 | 18 | 13 | 6 | 1 |
| 17 | 64 | 17 | 12 | 6 | 1 |
| 18 | 66 | 16 | 11 | 6 | 1 |
| 19 | 69 | 15 | 10 | 5 | 1 |
| 20 | 71 | 14 | 9 | 5 | 1 |
| 21 | 72 | 13 | 9 | 5 | 1 |
| 22 | 74 | 12 | 8 | 5 | 1 |
| 23 | 76 | 11 | 7 | 5 | 1 |
| 24 | 76 | 11 | 7 | 5 | 1 |
| 25 | 79 | 10 | 6 | 4 | 1 |
| 26 | 80 | 9 | 6 | 4 | 1 |
| 27 | 81 | 9 | 5 | 4 | 1 |
| 28 | 82 | 9 | 5 | 3 | 1 |
| 29 | 83 | 9 | 5 | 3 | 0 |
| 30 | 83 | 9 | 5 | 3 | 0 |
Wind in September
Winds average 5 mph in September.
Across September, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
Sunrise & sunset in September
Daylight runs from about 12 h 42 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 60 minutes over September. Sunrise moves from 6:04 AM to 6:24 AM, and sunset from 6:47 PM to 6:07 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) | 12.7 | 12.7 | 12.7 | 12.6 | 12.6 | 12.6 | 12.5 | 12.5 | 12.4 | 12.4 | 12.4 | 12.3 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12.0 | 12.0 | 12.0 | 11.9 | 11.9 | 11.9 | 11.8 | 11.8 | 11.7 | 11.7 |
| Sunrise (AM) | 6:04 | 6:05 | 6:06 | 6:06 | 6:07 | 6:08 | 6:08 | 6:09 | 6:10 | 6:10 | 6:11 | 6:12 | 6:12 | 6:13 | 6:14 | 6:14 | 6:15 | 6:16 | 6:16 | 6:17 | 6:18 | 6:18 | 6:19 | 6:20 | 6:21 | 6:21 | 6:22 | 6:23 | 6:23 | 6:24 |
| Sunset (PM) | 6:47 | 6:46 | 6:45 | 6:43 | 6:42 | 6:41 | 6:39 | 6:38 | 6:36 | 6:35 | 6:34 | 6:32 | 6:31 | 6:29 | 6:28 | 6:26 | 6:25 | 6:24 | 6:22 | 6:21 | 6:19 | 6:18 | 6:17 | 6:15 | 6:14 | 6:12 | 6:11 | 6:10 | 6:08 | 6:07 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.7 | 6:04 | 6:47 |
| 2 | 12.7 | 6:05 | 6:46 |
| 3 | 12.7 | 6:06 | 6:45 |
| 4 | 12.6 | 6:06 | 6:43 |
| 5 | 12.6 | 6:07 | 6:42 |
| 6 | 12.6 | 6:08 | 6:41 |
| 7 | 12.5 | 6:08 | 6:39 |
| 8 | 12.5 | 6:09 | 6:38 |
| 9 | 12.4 | 6:10 | 6:36 |
| 10 | 12.4 | 6:10 | 6:35 |
| 11 | 12.4 | 6:11 | 6:34 |
| 12 | 12.3 | 6:12 | 6:32 |
| 13 | 12.3 | 6:12 | 6:31 |
| 14 | 12.3 | 6:13 | 6:29 |
| 15 | 12.2 | 6:14 | 6:28 |
| 16 | 12.2 | 6:14 | 6:26 |
| 17 | 12.2 | 6:15 | 6:25 |
| 18 | 12.1 | 6:16 | 6:24 |
| 19 | 12.1 | 6:16 | 6:22 |
| 20 | 12.1 | 6:17 | 6:21 |
| 21 | 12.0 | 6:18 | 6:19 |
| 22 | 12.0 | 6:18 | 6:18 |
| 23 | 12.0 | 6:19 | 6:17 |
| 24 | 11.9 | 6:20 | 6:15 |
| 25 | 11.9 | 6:21 | 6:14 |
| 26 | 11.9 | 6:21 | 6:12 |
| 27 | 11.8 | 6:22 | 6:11 |
| 28 | 11.8 | 6:23 | 6:10 |
| 29 | 11.7 | 6:23 | 6:08 |
| 30 | 11.7 | 6:24 | 6:07 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 6.08 kWh/m².
For context, solar energy here swings from a low near 3.19 kWh/m² to a high of 8.45 kWh/m² in June across the year — September's 6.08 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.4 | 6.4 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.1 | 6.1 | 6.1 | 6.1 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 5.9 | 5.9 | 5.9 | 5.8 | 5.8 | 5.8 | 5.8 | 5.7 | 5.7 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.4 | Intense |
| 2 | 6.4 | Intense |
| 3 | 6.3 | Intense |
| 4 | 6.3 | Intense |
| 5 | 6.3 | Intense |
| 6 | 6.3 | Intense |
| 7 | 6.3 | Intense |
| 8 | 6.2 | Intense |
| 9 | 6.2 | Intense |
| 10 | 6.2 | Intense |
| 11 | 6.2 | Intense |
| 12 | 6.2 | Intense |
| 13 | 6.1 | Intense |
| 14 | 6.1 | Intense |
| 15 | 6.1 | Intense |
| 16 | 6.1 | Intense |
| 17 | 6.0 | Intense |
| 18 | 6.0 | Intense |
| 19 | 6.0 | Intense |
| 20 | 6.0 | Bright |
| 21 | 6.0 | Bright |
| 22 | 5.9 | Bright |
| 23 | 5.9 | Bright |
| 24 | 5.9 | Bright |
| 25 | 5.8 | Bright |
| 26 | 5.8 | Bright |
| 27 | 5.8 | Bright |
| 28 | 5.8 | Bright |
| 29 | 5.7 | Bright |
| 30 | 5.7 | Bright |
Is September a good time to visit San Tan Valley?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is a weaker month for outdoor sightseeing in San Tan Valley.
What to pack for San Tan Valley in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, San Tan Valley sees daytime highs around 97°F and nights near 74°F. Pack light clothes and sun protection. About 3 days see rain.
UV index in San Tan Valley in September
Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in San Tan Valley peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 4 | 5 | 5 | 7 | 9 | 11 | 11 | 11 | 9 | 6 | 4 | 3 |
| Level | Moderate | Moderate | Moderate | Very high | Very high | Extreme | Extreme | Extreme | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 5 | Moderate |
| Mar | 5 | Moderate |
| Apr | 7 | Very high |
| May | 9 | Very high |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 11 | Extreme |
| Sep | 9 | Very high |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 3 | Moderate |
Air quality in San Tan Valley in September
Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.
Air quality in San Tan Valley is worst in June — around 28 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 12 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 | 14 | 14 | 14 | 28 | 14 | 13 | 13 | 12 | 13 | 13 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 13 | Moderate |
| Feb | 13 | Moderate |
| Mar | 14 | Moderate |
| Apr | 14 | Moderate |
| May | 14 | Moderate |
| Jun | 28 | Moderate |
| Jul | 14 | Moderate |
| Aug | 13 | Moderate |
| Sep | 13 | Moderate |
| Oct | 12 | Moderate |
| Nov | 13 | Moderate |
| Dec | 13 | Moderate |
Where is San Tan Valley?
San Tan Valley sits at 33.2°N, 111.5°W, 1,516 ft above sea level, in United States. The nearest listed city is Queen Creek, 7.5 mi away.
Topography around San Tan Valley
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of San Tan Valley.
Within 2 miles, the terrain around San Tan Valley has only modest variations in elevation — a maximum elevation change of 92 ft around an average of 1,516 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,066 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 7,251 ft.
The land around San Tan Valley is covered by cropland (40%) and bare terrain (25%) within 2 miles, bare terrain (28%), grassland (27%) and shrubs (25%) within 10 miles, and shrubs (58%) 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 San Tan Valley (33.1911°, -111.528°, elevation 1,516 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).