Columbia weather in September
In September, Columbia sees average daytime highs of 79°F and overnight lows near 59°F, with 3.4 in of rain across 7.7 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 83°F in the first days to 74°F by the end. The sky is clear or mostly clear about 49% of the time in September, and the air most often feels dry.
Daylight stretches from about 12 h 54 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Columbia's 1st-clearest and 10th-windiest month. For the whole year in context, see Columbia's year-round climate.
- Daytime high
- 79°
- 4th warmest
- Overnight low
- 59°
- 9th coldest
- Rainfall
- 3.4 in
- 7.7 wet days
- Daylight
- 12 h 12 min
- 5:56 AM – 6:11 PM
- Cloud cover
- 45%
- 1st clearest
- Wind
- 6 mph
- 10th windiest
- Solar energy
- 4.82 kWh/m²
- Travel score
- 7.1
- out of 10
Columbia is city in and county seat of Boone County, Missouri, United States.
- Density
- 765/km²
- people per km²
- Founded
- 1821
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Highs ease over the month, from about 83°F in the first days to 74°F by the end.
A typical September day in Columbia reaches about 79°F in the afternoon and slips back to 59°F overnight — a 20°F spread between the day's warmth and the night's chill. On most days the high lands between 68°F and 89°F. Set against its neighbours, September runs about 7°F cooler than August and about 12°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) | 84 | 84 | 83 | 83 | 83 | 82 | 82 | 82 | 81 | 81 | 80 | 80 | 80 | 79 | 79 | 78 | 78 | 78 | 77 | 77 | 77 | 76 | 76 | 76 | 75 | 75 | 75 | 74 | 74 | 74 |
| Avg low (°F) | 65 | 64 | 64 | 64 | 63 | 63 | 62 | 62 | 62 | 61 | 61 | 60 | 60 | 59 | 59 | 59 | 58 | 58 | 57 | 57 | 56 | 56 | 56 | 55 | 55 | 55 | 54 | 54 | 53 | 53 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 84 | 65 |
| 2 | 84 | 64 |
| 3 | 83 | 64 |
| 4 | 83 | 64 |
| 5 | 83 | 63 |
| 6 | 82 | 63 |
| 7 | 82 | 62 |
| 8 | 82 | 62 |
| 9 | 81 | 62 |
| 10 | 81 | 61 |
| 11 | 80 | 61 |
| 12 | 80 | 60 |
| 13 | 80 | 60 |
| 14 | 79 | 59 |
| 15 | 79 | 59 |
| 16 | 78 | 59 |
| 17 | 78 | 58 |
| 18 | 78 | 58 |
| 19 | 77 | 57 |
| 20 | 77 | 57 |
| 21 | 77 | 56 |
| 22 | 76 | 56 |
| 23 | 76 | 56 |
| 24 | 76 | 55 |
| 25 | 75 | 55 |
| 26 | 75 | 55 |
| 27 | 75 | 54 |
| 28 | 74 | 54 |
| 29 | 74 | 53 |
| 30 | 74 | 53 |
How September really feels in Columbia
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.
Columbia 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 | 38° / 23° | 2.2 | 7.2 | 3.7 | 9.6 | 0.0 |
| Feb | 44° / 27° | 2.3 | 6.9 | 2.9 | 10.5 | 0.7 |
| Mar | 55° / 36° | 3.4 | 10.7 | 1.6 | 11.7 | 3.4 |
| Apr | 65° / 46° | 5.1 | 11.6 | 0.3 | 13 | 5.6 |
| May | 74° / 56° | 5.3 | 13.3 | 0 | 14.1 | 6.2 |
| Jun | 83° / 66° | 4.4 | 11.9 | 0 | 14.7 | 5.4 |
| Jul | 88° / 69° | 3.7 | 9.5 | 0 | 14.5 | 4.7 |
| Aug | 86° / 67° | 3.0 | 8.9 | 0 | 13.5 | 5.2 |
| Sep | 79° / 59° | 3.4 | 7.7 | 0 | 12.3 | 7.1 |
| Oct | 67° / 47° | 3.3 | 8.8 | 0.1 | 11 | 6.4 |
| Nov | 53° / 36° | 3.1 | 7.8 | 1.1 | 9.9 | 3.3 |
| Dec | 42° / 27° | 2.3 | 6.9 | 2.3 | 9.3 | 0.4 |
Cloud cover in September
The sky is clear or mostly clear about 49% 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 38%.
| 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 (%) | 62 | 63 | 63 | 63 | 64 | 63 | 63 | 64 | 64 | 63 | 63 | 62 | 61 | 61 | 60 | 60 | 60 | 60 | 60 | 60 | 61 | 61 | 62 | 62 | 63 | 64 | 65 | 65 | 65 | 65 |
| Cloudier (%) | 38 | 37 | 37 | 37 | 36 | 37 | 37 | 36 | 36 | 37 | 37 | 38 | 39 | 39 | 40 | 40 | 40 | 40 | 40 | 40 | 39 | 39 | 38 | 38 | 37 | 36 | 35 | 35 | 35 | 35 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 62 | 38 |
| 2 | 63 | 37 |
| 3 | 63 | 37 |
| 4 | 63 | 37 |
| 5 | 64 | 36 |
| 6 | 63 | 37 |
| 7 | 63 | 37 |
| 8 | 64 | 36 |
| 9 | 64 | 36 |
| 10 | 63 | 37 |
| 11 | 63 | 37 |
| 12 | 62 | 38 |
| 13 | 61 | 39 |
| 14 | 61 | 39 |
| 15 | 60 | 40 |
| 16 | 60 | 40 |
| 17 | 60 | 40 |
| 18 | 60 | 40 |
| 19 | 60 | 40 |
| 20 | 60 | 40 |
| 21 | 61 | 39 |
| 22 | 61 | 39 |
| 23 | 62 | 38 |
| 24 | 62 | 38 |
| 25 | 63 | 37 |
| 26 | 64 | 36 |
| 27 | 65 | 35 |
| 28 | 65 | 35 |
| 29 | 65 | 35 |
| 30 | 65 | 35 |
Chance of precipitation in September
Columbia gets around 3.4 in of rain over 7.7 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 27% and peaks near 29% 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 | 26 | 26 | 26 | 26 | 27 | 27 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 27 | 26 | 26 | 25 | 25 | 24 | 24 | 24 | 24 |
| Rain chance (%) | |
|---|---|
| 1 | 25 |
| 2 | 25 |
| 3 | 25 |
| 4 | 25 |
| 5 | 26 |
| 6 | 26 |
| 7 | 26 |
| 8 | 26 |
| 9 | 27 |
| 10 | 27 |
| 11 | 28 |
| 12 | 28 |
| 13 | 28 |
| 14 | 29 |
| 15 | 29 |
| 16 | 29 |
| 17 | 29 |
| 18 | 29 |
| 19 | 28 |
| 20 | 28 |
| 21 | 28 |
| 22 | 27 |
| 23 | 26 |
| 24 | 26 |
| 25 | 25 |
| 26 | 25 |
| 27 | 24 |
| 28 | 24 |
| 29 | 24 |
| 30 | 24 |
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 38% of days. Sticky, muggy-or-worse air turns up on roughly 23% 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 (%) | 13 | 15 | 16 | 18 | 19 | 21 | 23 | 25 | 27 | 28 | 30 | 32 | 33 | 35 | 37 | 38 | 40 | 42 | 44 | 45 | 47 | 49 | 51 | 53 | 54 | 58 | 58 | 60 | 62 | 63 |
| Comfortable (%) | 17 | 18 | 19 | 19 | 20 | 21 | 22 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 22 | 22 | 21 | 20 | 20 | 19 | 19 | 18 | 18 | 17 |
| Humid (%) | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 22 | 21 | 21 | 20 | 19 | 19 | 18 | 17 | 17 | 16 | 16 | 15 | 15 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 11 |
| Muggy (%) | 32 | 31 | 30 | 29 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 21 | 20 | 20 | 19 | 19 | 18 | 18 | 17 | 16 | 15 | 15 | 14 | 13 | 12 | 11 | 11 | 10 | 9 | 9 |
| Oppressive (%) | 13 | 12 | 11 | 10 | 9 | 9 | 8 | 7 | 6 | 6 | 5 | 4 | 4 | 3 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 13 | 17 | 24 | 32 | 13 |
| 2 | 15 | 18 | 24 | 31 | 12 |
| 3 | 16 | 19 | 24 | 30 | 11 |
| 4 | 18 | 19 | 24 | 29 | 10 |
| 5 | 19 | 20 | 24 | 27 | 9 |
| 6 | 21 | 21 | 23 | 26 | 9 |
| 7 | 23 | 22 | 23 | 25 | 8 |
| 8 | 25 | 23 | 22 | 24 | 7 |
| 9 | 27 | 23 | 21 | 23 | 6 |
| 10 | 28 | 23 | 21 | 22 | 6 |
| 11 | 30 | 24 | 20 | 21 | 5 |
| 12 | 32 | 24 | 19 | 21 | 4 |
| 13 | 33 | 24 | 19 | 20 | 4 |
| 14 | 35 | 24 | 18 | 20 | 3 |
| 15 | 37 | 24 | 17 | 19 | 3 |
| 16 | 38 | 24 | 17 | 19 | 3 |
| 17 | 40 | 23 | 16 | 18 | 2 |
| 18 | 42 | 23 | 16 | 18 | 2 |
| 19 | 44 | 23 | 15 | 17 | 2 |
| 20 | 45 | 23 | 15 | 16 | 1 |
| 21 | 47 | 22 | 14 | 15 | 1 |
| 22 | 49 | 22 | 14 | 15 | 1 |
| 23 | 51 | 21 | 13 | 14 | 1 |
| 24 | 53 | 20 | 13 | 13 | 1 |
| 25 | 54 | 20 | 13 | 12 | 1 |
| 26 | 58 | 19 | 12 | 11 | 0 |
| 27 | 58 | 19 | 12 | 11 | 0 |
| 28 | 60 | 18 | 12 | 10 | 0 |
| 29 | 62 | 18 | 11 | 9 | 0 |
| 30 | 63 | 17 | 11 | 9 | 0 |
Wind in September
Winds average 6 mph in September.
Across September, daily wind ranges from about 6 mph on the calmest days to 7 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) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| 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 | 6 | calm |
| 2 | 6 | calm |
| 3 | 6 | calm |
| 4 | 6 | calm |
| 5 | 6 | calm |
| 6 | 6 | calm |
| 7 | 6 | calm |
| 8 | 6 | calm |
| 9 | 6 | calm |
| 10 | 6 | calm |
| 11 | 6 | calm |
| 12 | 6 | calm |
| 13 | 6 | calm |
| 14 | 6 | 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 | 7 | calm |
| 24 | 7 | calm |
| 25 | 7 | calm |
| 26 | 7 | calm |
| 27 | 7 | calm |
| 28 | 7 | calm |
| 29 | 7 | calm |
| 30 | 7 | calm |
Sunrise & sunset in September
Daylight runs from about 12 h 54 min 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 78 minutes over September. Sunrise moves from 5:42 AM to 6:09 AM, and sunset from 6:36 PM to 5:48 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) | 12.9 | 12.8 | 12.8 | 12.8 | 12.7 | 12.7 | 12.6 | 12.6 | 12.6 | 12.5 | 12.5 | 12.4 | 12.4 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.0 | 12.0 | 11.9 | 11.9 | 11.9 | 11.8 | 11.8 | 11.7 | 11.7 | 11.6 |
| Sunrise (AM) | 5:42 | 5:43 | 5:44 | 5:45 | 5:46 | 5:47 | 5:48 | 5:49 | 5:50 | 5:51 | 5:52 | 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 | 6:07 | 6:08 | 6:09 |
| Sunset (PM) | 6:36 | 6:34 | 6:33 | 6:31 | 6:29 | 6:28 | 6:26 | 6:24 | 6:23 | 6:21 | 6:19 | 6:18 | 6:16 | 6:14 | 6:13 | 6:11 | 6:09 | 6:08 | 6:06 | 6:04 | 6:03 | 6:01 | 5:59 | 5:58 | 5:56 | 5:54 | 5:53 | 5:51 | 5:50 | 5:48 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.9 | 5:42 | 6:36 |
| 2 | 12.8 | 5:43 | 6:34 |
| 3 | 12.8 | 5:44 | 6:33 |
| 4 | 12.8 | 5:45 | 6:31 |
| 5 | 12.7 | 5:46 | 6:29 |
| 6 | 12.7 | 5:47 | 6:28 |
| 7 | 12.6 | 5:48 | 6:26 |
| 8 | 12.6 | 5:49 | 6:24 |
| 9 | 12.6 | 5:50 | 6:23 |
| 10 | 12.5 | 5:51 | 6:21 |
| 11 | 12.5 | 5:52 | 6:19 |
| 12 | 12.4 | 5:52 | 6:18 |
| 13 | 12.4 | 5:53 | 6:16 |
| 14 | 12.3 | 5:54 | 6:14 |
| 15 | 12.3 | 5:55 | 6:13 |
| 16 | 12.2 | 5:56 | 6:11 |
| 17 | 12.2 | 5:57 | 6:09 |
| 18 | 12.2 | 5:58 | 6:08 |
| 19 | 12.1 | 5:59 | 6:06 |
| 20 | 12.1 | 6:00 | 6:04 |
| 21 | 12.0 | 6:01 | 6:03 |
| 22 | 12.0 | 6:02 | 6:01 |
| 23 | 11.9 | 6:03 | 5:59 |
| 24 | 11.9 | 6:04 | 5:58 |
| 25 | 11.9 | 6:05 | 5:56 |
| 26 | 11.8 | 6:06 | 5:54 |
| 27 | 11.8 | 6:07 | 5:53 |
| 28 | 11.7 | 6:07 | 5:51 |
| 29 | 11.7 | 6:08 | 5:50 |
| 30 | 11.6 | 6:09 | 5:48 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 4.82 kWh/m².
For context, solar energy here swings from a low near 1.94 kWh/m² to a high of 6.44 kWh/m² in July across the year — September's 4.82 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) | 5.3 | 5.3 | 5.3 | 5.2 | 5.2 | 5.2 | 5.1 | 5.1 | 5.0 | 5.0 | 5.0 | 4.9 | 4.9 | 4.8 | 4.8 | 4.7 | 4.7 | 4.7 | 4.6 | 4.6 | 4.6 | 4.5 | 4.5 | 4.5 | 4.4 | 4.4 | 4.4 | 4.3 | 4.3 | 4.3 |
| 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 |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.3 | Bright |
| 2 | 5.3 | Bright |
| 3 | 5.3 | Bright |
| 4 | 5.2 | Bright |
| 5 | 5.2 | Bright |
| 6 | 5.2 | Bright |
| 7 | 5.1 | Bright |
| 8 | 5.1 | Bright |
| 9 | 5.0 | Bright |
| 10 | 5.0 | Bright |
| 11 | 5.0 | Bright |
| 12 | 4.9 | Bright |
| 13 | 4.9 | Bright |
| 14 | 4.8 | Bright |
| 15 | 4.8 | Bright |
| 16 | 4.7 | Bright |
| 17 | 4.7 | Bright |
| 18 | 4.7 | Bright |
| 19 | 4.6 | Bright |
| 20 | 4.6 | Bright |
| 21 | 4.6 | Bright |
| 22 | 4.5 | Bright |
| 23 | 4.5 | Bright |
| 24 | 4.5 | Bright |
| 25 | 4.4 | Bright |
| 26 | 4.4 | Bright |
| 27 | 4.4 | Bright |
| 28 | 4.3 | Bright |
| 29 | 4.3 | Bright |
| 30 | 4.3 | Bright |
Is September a good time to visit Columbia?
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 Columbia for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Columbia in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Columbia sees daytime highs around 79°F and nights near 59°F. Worth packing: light clothes and sun protection. About 8 days see rain.
UV index in Columbia in September
Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Columbia peaks around June 21 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 7 | 7 | 10 | 9 | 8 | 7 | 4 | 3 | 2 |
| Level | Moderate | Moderate | Moderate | High | Very high | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 7 | High |
| May | 7 | Very high |
| Jun | 10 | Very high |
| Jul | 9 | Very high |
| Aug | 8 | Very high |
| Sep | 7 | High |
| Oct | 4 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Air quality in Columbia 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 Columbia is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (November, 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) | 9 | 11 | 12 | 10 | 13 | 14 | 17 | 14 | 11 | 7 | 7 | 8 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 11 | Good |
| Mar | 12 | Good |
| Apr | 10 | Good |
| May | 13 | Moderate |
| Jun | 14 | Moderate |
| Jul | 17 | Moderate |
| Aug | 14 | Moderate |
| Sep | 11 | Good |
| Oct | 7 | Good |
| Nov | 7 | Good |
| Dec | 8 | Good |
Where is Columbia?
Columbia sits at 39.0°N, 92.3°W, 705 ft above sea level, in United States. The nearest listed city is Jefferson City, 27 mi away.
Topography around Columbia
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Columbia.
Within 2 miles, the terrain around Columbia has only modest variations in elevation — a maximum elevation change of 220 ft around an average of 728 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 387 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 640 ft.
The land around Columbia is covered by trees (47%) and artificial surfaces (35%) within 2 miles, trees (52%) and grassland (30%) within 10 miles, and trees (41%), cropland (32%) and grassland (25%) 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 Columbia (38.9517°, -92.3341°, elevation 705 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).