Ankeny weather in September
In September, Ankeny sees average daytime highs of 75°F and overnight lows near 55°F, with 3.6 in of rain across 8.3 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.
Highs ease over the month, from about 80°F in the first days to 70°F by the end. The sky is clear or mostly clear about 47% of the time in September, and the air most often feels dry.
Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Ankeny's 1st-clearest and 9th-windiest month. For the whole year in context, see Ankeny's year-round climate.
- Daytime high
- 75°
- 4th warmest
- Overnight low
- 55°
- 9th coldest
- Rainfall
- 3.6 in
- 8.3 wet days
- Daylight
- 12 h 18 min
- 6:00 AM – 6:17 PM
- Cloud cover
- 46%
- 1st clearest
- Wind
- 9 mph
- 9th windiest
- Solar energy
- 4.62 kWh/m²
- Travel score
- 7.2
- out of 10
Ankeny is city in Polk County, Iowa, United States.
- Density
- 746/km²
- people per km²
- Founded
- 1854
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Highs ease over the month, from about 80°F in the first days to 70°F by the end.
A typical September day in Ankeny reaches about 75°F in the afternoon and slips back to 55°F overnight — a 20°F spread between the day's warmth and the night's chill. On most days the high lands between 64°F and 86°F. Set against its neighbours, September runs about 7°F cooler than August and about 13°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) | 80 | 80 | 80 | 79 | 79 | 79 | 78 | 78 | 78 | 77 | 77 | 76 | 76 | 76 | 75 | 75 | 74 | 74 | 74 | 73 | 73 | 73 | 72 | 72 | 72 | 71 | 71 | 71 | 70 | 70 |
| Avg low (°F) | 60 | 60 | 60 | 59 | 59 | 59 | 58 | 58 | 57 | 57 | 56 | 56 | 56 | 55 | 55 | 55 | 54 | 54 | 53 | 53 | 53 | 52 | 52 | 51 | 51 | 50 | 50 | 50 | 49 | 49 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 80 | 60 |
| 2 | 80 | 60 |
| 3 | 80 | 60 |
| 4 | 79 | 59 |
| 5 | 79 | 59 |
| 6 | 79 | 59 |
| 7 | 78 | 58 |
| 8 | 78 | 58 |
| 9 | 78 | 57 |
| 10 | 77 | 57 |
| 11 | 77 | 56 |
| 12 | 76 | 56 |
| 13 | 76 | 56 |
| 14 | 76 | 55 |
| 15 | 75 | 55 |
| 16 | 75 | 55 |
| 17 | 74 | 54 |
| 18 | 74 | 54 |
| 19 | 74 | 53 |
| 20 | 73 | 53 |
| 21 | 73 | 53 |
| 22 | 73 | 52 |
| 23 | 72 | 52 |
| 24 | 72 | 51 |
| 25 | 72 | 51 |
| 26 | 71 | 50 |
| 27 | 71 | 50 |
| 28 | 71 | 50 |
| 29 | 70 | 49 |
| 30 | 70 | 49 |
How September really feels in Ankeny
Once humidity and wind are folded in, September 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.
September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Ankeny 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 | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 29° / 13° | 1.2 | 6.3 | 4.9 | 9.3 | 0.0 |
| Feb | 34° / 17° | 1.5 | 6.5 | 4.7 | 10.3 | 0.0 |
| Mar | 47° / 29° | 2.6 | 8.8 | 2.8 | 11.7 | 1.7 |
| Apr | 61° / 40° | 4.4 | 11.2 | 0.9 | 13.1 | 4.7 |
| May | 71° / 52° | 5.5 | 13.7 | 0.1 | 14.3 | 6.0 |
| Jun | 80° / 62° | 5.0 | 11.9 | 0 | 15 | 6.2 |
| Jul | 84° / 66° | 3.8 | 9.5 | 0 | 14.7 | 5.8 |
| Aug | 82° / 63° | 4.0 | 9.5 | 0 | 13.7 | 6.6 |
| Sep | 75° / 55° | 3.6 | 8.3 | 0 | 12.3 | 7.2 |
| Oct | 62° / 42° | 2.9 | 8.1 | 0.4 | 10.9 | 5.6 |
| Nov | 47° / 30° | 2.1 | 6.7 | 1.3 | 9.6 | 1.8 |
| Dec | 34° / 19° | 1.6 | 5.9 | 4.1 | 9 | 0.0 |
Cloud cover in September
The sky is clear or mostly clear about 47% of the time in September, the clearest month of the year.
Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 39%.
| 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 (%) | 67 | 67 | 67 | 67 | 66 | 65 | 65 | 64 | 63 | 62 | 62 | 61 | 60 | 60 | 59 | 58 | 57 | 57 | 57 | 58 | 58 | 58 | 59 | 59 | 59 | 59 | 60 | 60 | 61 | 61 |
| Cloudier (%) | 33 | 33 | 33 | 33 | 34 | 35 | 35 | 36 | 37 | 38 | 38 | 39 | 40 | 40 | 41 | 42 | 43 | 43 | 43 | 42 | 42 | 42 | 41 | 41 | 41 | 41 | 40 | 40 | 39 | 39 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 67 | 33 |
| 2 | 67 | 33 |
| 3 | 67 | 33 |
| 4 | 67 | 33 |
| 5 | 66 | 34 |
| 6 | 65 | 35 |
| 7 | 65 | 35 |
| 8 | 64 | 36 |
| 9 | 63 | 37 |
| 10 | 62 | 38 |
| 11 | 62 | 38 |
| 12 | 61 | 39 |
| 13 | 60 | 40 |
| 14 | 60 | 40 |
| 15 | 59 | 41 |
| 16 | 58 | 42 |
| 17 | 57 | 43 |
| 18 | 57 | 43 |
| 19 | 57 | 43 |
| 20 | 58 | 42 |
| 21 | 58 | 42 |
| 22 | 58 | 42 |
| 23 | 59 | 41 |
| 24 | 59 | 41 |
| 25 | 59 | 41 |
| 26 | 59 | 41 |
| 27 | 60 | 40 |
| 28 | 60 | 40 |
| 29 | 61 | 39 |
| 30 | 61 | 39 |
Chance of precipitation in September
Ankeny gets around 3.6 in of rain over 8.3 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 28% and peaks near 31% 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 (%) | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 27 | 28 | 28 | 29 | 30 | 30 | 31 | 31 | 31 | 31 | 31 | 31 | 30 | 30 | 30 | 29 | 29 | 28 | 28 | 27 | 27 | 27 |
| Rain chance (%) | |
|---|---|
| 1 | 25 |
| 2 | 25 |
| 3 | 25 |
| 4 | 25 |
| 5 | 25 |
| 6 | 25 |
| 7 | 26 |
| 8 | 26 |
| 9 | 27 |
| 10 | 28 |
| 11 | 28 |
| 12 | 29 |
| 13 | 30 |
| 14 | 30 |
| 15 | 31 |
| 16 | 31 |
| 17 | 31 |
| 18 | 31 |
| 19 | 31 |
| 20 | 31 |
| 21 | 30 |
| 22 | 30 |
| 23 | 30 |
| 24 | 29 |
| 25 | 29 |
| 26 | 28 |
| 27 | 28 |
| 28 | 27 |
| 29 | 27 |
| 30 | 27 |
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 50% of days. Sticky, muggy-or-worse air turns up on roughly 14% 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 (%) | 22 | 24 | 26 | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 47 | 49 | 50 | 54 | 55 | 57 | 58 | 59 | 62 | 64 | 67 | 69 | 70 | 72 | 74 | 75 | 77 |
| Comfortable (%) | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 22 | 22 | 22 | 21 | 21 | 21 | 20 | 20 | 20 | 19 | 19 | 18 | 18 | 17 | 16 | 16 | 15 | 14 | 14 | 13 |
| Humid (%) | 23 | 23 | 22 | 22 | 22 | 22 | 21 | 21 | 20 | 20 | 19 | 19 | 18 | 18 | 17 | 16 | 15 | 14 | 13 | 13 | 12 | 11 | 10 | 9 | 9 | 8 | 8 | 7 | 7 | 6 |
| Muggy (%) | 24 | 23 | 21 | 19 | 18 | 17 | 16 | 15 | 14 | 14 | 13 | 13 | 12 | 12 | 11 | 11 | 10 | 10 | 9 | 9 | 9 | 8 | 7 | 7 | 6 | 6 | 5 | 5 | 4 | 4 |
| Oppressive (%) | 8 | 8 | 7 | 7 | 6 | 5 | 5 | 4 | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 22 | 23 | 23 | 24 | 8 |
| 2 | 24 | 23 | 23 | 23 | 8 |
| 3 | 26 | 24 | 22 | 21 | 7 |
| 4 | 28 | 24 | 22 | 19 | 7 |
| 5 | 30 | 24 | 22 | 18 | 6 |
| 6 | 32 | 24 | 22 | 17 | 5 |
| 7 | 34 | 24 | 21 | 16 | 5 |
| 8 | 36 | 23 | 21 | 15 | 4 |
| 9 | 38 | 23 | 20 | 14 | 4 |
| 10 | 40 | 23 | 20 | 14 | 4 |
| 11 | 42 | 22 | 19 | 13 | 3 |
| 12 | 44 | 22 | 19 | 13 | 3 |
| 13 | 46 | 22 | 18 | 12 | 2 |
| 14 | 47 | 21 | 18 | 12 | 2 |
| 15 | 49 | 21 | 17 | 11 | 2 |
| 16 | 50 | 21 | 16 | 11 | 2 |
| 17 | 54 | 20 | 15 | 10 | 1 |
| 18 | 55 | 20 | 14 | 10 | 1 |
| 19 | 57 | 20 | 13 | 9 | 1 |
| 20 | 58 | 19 | 13 | 9 | 1 |
| 21 | 59 | 19 | 12 | 9 | 1 |
| 22 | 62 | 18 | 11 | 8 | 1 |
| 23 | 64 | 18 | 10 | 7 | 1 |
| 24 | 67 | 17 | 9 | 7 | 0 |
| 25 | 69 | 16 | 9 | 6 | 0 |
| 26 | 70 | 16 | 8 | 6 | 0 |
| 27 | 72 | 15 | 8 | 5 | 0 |
| 28 | 74 | 14 | 7 | 5 | 0 |
| 29 | 75 | 14 | 7 | 4 | 0 |
| 30 | 77 | 13 | 6 | 4 | 0 |
Wind in September
Winds average 9 mph in September.
Across September, daily wind ranges from about 8 mph on the calmest days to 9 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 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| 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 | 9 | light breeze |
| 15 | 9 | light breeze |
| 16 | 9 | light breeze |
| 17 | 9 | light breeze |
| 18 | 9 | light breeze |
| 19 | 9 | light breeze |
| 20 | 9 | light breeze |
| 21 | 9 | light breeze |
| 22 | 9 | light breeze |
| 23 | 9 | light breeze |
| 24 | 9 | light breeze |
| 25 | 9 | light breeze |
| 26 | 9 | light breeze |
| 27 | 9 | light breeze |
| 28 | 9 | light breeze |
| 29 | 9 | light breeze |
| 30 | 9 | light breeze |
Sunrise & sunset in September
Daylight runs from about 13 hours at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 84 minutes over September. Sunrise moves from 5:45 AM to 6:16 AM, and sunset from 6:44 PM to 5:52 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) | 13.0 | 12.9 | 12.9 | 12.8 | 12.8 | 12.8 | 12.7 | 12.7 | 12.6 | 12.6 | 12.5 | 12.5 | 12.4 | 12.4 | 12.3 | 12.3 | 12.2 | 12.2 | 12.1 | 12.1 | 12.0 | 12.0 | 11.9 | 11.9 | 11.8 | 11.8 | 11.7 | 11.7 | 11.7 | 11.6 |
| Sunrise (AM) | 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 | 6:02 | 6:03 | 6:04 | 6:05 | 6:06 | 6:07 | 6:08 | 6:09 | 6:10 | 6:11 | 6:12 | 6:13 | 6:14 | 6:16 |
| Sunset (PM) | 6:44 | 6:42 | 6:40 | 6:38 | 6:37 | 6:35 | 6:33 | 6:31 | 6:30 | 6:28 | 6:26 | 6:24 | 6:22 | 6:21 | 6:19 | 6:17 | 6:15 | 6:13 | 6:12 | 6:10 | 6:08 | 6:06 | 6:04 | 6:03 | 6:01 | 5:59 | 5:57 | 5:55 | 5:54 | 5:52 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.0 | 5:45 | 6:44 |
| 2 | 12.9 | 5:46 | 6:42 |
| 3 | 12.9 | 5:47 | 6:40 |
| 4 | 12.8 | 5:48 | 6:38 |
| 5 | 12.8 | 5:49 | 6:37 |
| 6 | 12.8 | 5:50 | 6:35 |
| 7 | 12.7 | 5:51 | 6:33 |
| 8 | 12.7 | 5:52 | 6:31 |
| 9 | 12.6 | 5:53 | 6:30 |
| 10 | 12.6 | 5:54 | 6:28 |
| 11 | 12.5 | 5:55 | 6:26 |
| 12 | 12.5 | 5:56 | 6:24 |
| 13 | 12.4 | 5:57 | 6:22 |
| 14 | 12.4 | 5:58 | 6:21 |
| 15 | 12.3 | 5:59 | 6:19 |
| 16 | 12.3 | 6:00 | 6:17 |
| 17 | 12.2 | 6:02 | 6:15 |
| 18 | 12.2 | 6:03 | 6:13 |
| 19 | 12.1 | 6:04 | 6:12 |
| 20 | 12.1 | 6:05 | 6:10 |
| 21 | 12.0 | 6:06 | 6:08 |
| 22 | 12.0 | 6:07 | 6:06 |
| 23 | 11.9 | 6:08 | 6:04 |
| 24 | 11.9 | 6:09 | 6:03 |
| 25 | 11.8 | 6:10 | 6:01 |
| 26 | 11.8 | 6:11 | 5:59 |
| 27 | 11.7 | 6:12 | 5:57 |
| 28 | 11.7 | 6:13 | 5:55 |
| 29 | 11.7 | 6:14 | 5:54 |
| 30 | 11.6 | 6:16 | 5:52 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 4.62 kWh/m².
For context, solar energy here swings from a low near 1.79 kWh/m² to a high of 6.46 kWh/m² in July across the year — September's 4.62 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) | 5.2 | 5.2 | 5.2 | 5.1 | 5.1 | 5.0 | 5.0 | 5.0 | 4.9 | 4.8 | 4.8 | 4.7 | 4.7 | 4.6 | 4.6 | 4.5 | 4.5 | 4.4 | 4.4 | 4.3 | 4.3 | 4.3 | 4.2 | 4.2 | 4.2 | 4.1 | 4.1 | 4.0 | 4.0 | 4.0 |
| 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 | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.2 | Bright |
| 2 | 5.2 | Bright |
| 3 | 5.2 | Bright |
| 4 | 5.1 | Bright |
| 5 | 5.1 | Bright |
| 6 | 5.0 | Bright |
| 7 | 5.0 | Bright |
| 8 | 5.0 | Bright |
| 9 | 4.9 | Bright |
| 10 | 4.8 | Bright |
| 11 | 4.8 | Bright |
| 12 | 4.7 | Bright |
| 13 | 4.7 | Bright |
| 14 | 4.6 | Bright |
| 15 | 4.6 | Bright |
| 16 | 4.5 | Bright |
| 17 | 4.5 | Bright |
| 18 | 4.4 | Bright |
| 19 | 4.4 | Bright |
| 20 | 4.3 | Bright |
| 21 | 4.3 | Bright |
| 22 | 4.3 | Bright |
| 23 | 4.2 | Bright |
| 24 | 4.2 | Bright |
| 25 | 4.2 | Bright |
| 26 | 4.1 | Bright |
| 27 | 4.1 | Bright |
| 28 | 4.0 | Bright |
| 29 | 4.0 | Moderate |
| 30 | 4.0 | Moderate |
Is September a good time to visit Ankeny?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is one of the better times to visit Ankeny for general sightseeing.
What to pack for Ankeny in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Ankeny sees daytime highs around 75°F and nights near 55°F. Worth packing: light clothes, rain gear and sun protection. About 8 days see rain.
UV index in Ankeny in September
Clear-sky midday UV in September 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 Ankeny peaks around June 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 | 4 | 6 | 7 | 9 | 9 | 7 | 6 | 4 | 3 | 2 |
| Level | Low | Moderate | Moderate | High | High | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 7 | High |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 7 | Very high |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Air quality in Ankeny 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 Ankeny is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 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 | 15 | 14 | 11 | 11 | 12 | 16 | 14 | 12 | 7 | 9 | 10 |
| Level | Moderate | Moderate | Moderate | Good | Good | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 13 | Moderate |
| Feb | 15 | Moderate |
| Mar | 14 | Moderate |
| Apr | 11 | Good |
| May | 11 | Good |
| Jun | 12 | Moderate |
| Jul | 16 | Moderate |
| Aug | 14 | Moderate |
| Sep | 12 | Good |
| Oct | 7 | Good |
| Nov | 9 | Good |
| Dec | 10 | Good |
Where is Ankeny?
Ankeny sits at 41.7°N, 93.6°W, 991 ft above sea level, in United States. The nearest listed city is Johnston, 6.2 mi away.
Topography around Ankeny
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Ankeny.
Within 2 miles, the terrain around Ankeny has only modest variations in elevation — a maximum elevation change of 135 ft around an average of 955 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 272 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 719 ft.
The land around Ankeny is covered by artificial surfaces (41%), grassland (28%) and trees (24%) within 2 miles, cropland (44%) and trees (21%) within 10 miles, and cropland (67%) 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 Ankeny (41.7297°, -93.6058°, elevation 991 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).