Fairfield weather in April
In April, Fairfield sees average daytime highs of 65°F and overnight lows near 46°F, with 4.6 in of precipitation across 12.2 wet days and about 13 hours of daylight. It is the 7th-warmest and 1st-wettest month of the year here.
Highs climb over the month, from about 60°F in the first days to 68°F by the end. The sky is clear or mostly clear about 24% of the time in April, and the air most often feels dry.
Daylight stretches from about 12 h 24 min at the start of April to 13 h 36 min by month's end. Set against the rest of the year, April is Fairfield's 7th-clearest and 1st-windiest month. For the whole year in context, see Fairfield's year-round climate.
- Daytime high
- 65°
- 7th warmest
- Overnight low
- 46°
- 6th coldest
- Precipitation
- 4.6 in
- 12.2 wet days
- Daylight
- 13 hours
- 6:08 AM – 7:09 PM
- Cloud cover
- 64%
- 7th clearest
- Wind
- 8 mph
- 1st windiest
- Solar energy
- 5.09 kWh/m²
- Travel score
- 5.4
- out of 10
Fairfield is city on border of Butler and Hamilton Counties in Ohio, United States.
- Density
- 784/km²
- people per km²
- Founded
- 1787
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in April
Highs climb over the month, from about 60°F in the first days to 68°F by the end.
A typical April day in Fairfield reaches about 65°F in the afternoon and slips back to 46°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 51°F and 78°F. Set against its neighbours, April runs about 12°F warmer than March and about 9°F cooler than May.
| 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) | 60 | 60 | 60 | 61 | 61 | 62 | 62 | 63 | 63 | 64 | 64 | 64 | 65 | 65 | 65 | 65 | 66 | 66 | 66 | 66 | 67 | 67 | 67 | 67 | 67 | 68 | 68 | 68 | 69 | 69 |
| Avg low (°F) | 41 | 42 | 42 | 42 | 43 | 43 | 43 | 44 | 44 | 44 | 45 | 45 | 46 | 46 | 46 | 47 | 47 | 47 | 47 | 48 | 48 | 48 | 49 | 49 | 49 | 49 | 50 | 50 | 50 | 51 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 60 | 41 |
| 2 | 60 | 42 |
| 3 | 60 | 42 |
| 4 | 61 | 42 |
| 5 | 61 | 43 |
| 6 | 62 | 43 |
| 7 | 62 | 43 |
| 8 | 63 | 44 |
| 9 | 63 | 44 |
| 10 | 64 | 44 |
| 11 | 64 | 45 |
| 12 | 64 | 45 |
| 13 | 65 | 46 |
| 14 | 65 | 46 |
| 15 | 65 | 46 |
| 16 | 65 | 47 |
| 17 | 66 | 47 |
| 18 | 66 | 47 |
| 19 | 66 | 47 |
| 20 | 66 | 48 |
| 21 | 67 | 48 |
| 22 | 67 | 48 |
| 23 | 67 | 49 |
| 24 | 67 | 49 |
| 25 | 67 | 49 |
| 26 | 68 | 49 |
| 27 | 68 | 50 |
| 28 | 68 | 50 |
| 29 | 69 | 50 |
| 30 | 69 | 51 |
How April really feels in Fairfield
Once humidity and wind are folded in, April 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.
April sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Fairfield weather by month
How April compares with the rest of the year at a glance. April is the 7th-warmest and 1st-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 39° / 25° | 3.3 | 10.1 | 4.2 | 9.5 | 0.0 |
| Feb | 43° / 27° | 2.9 | 9 | 3.8 | 10.5 | 0.5 |
| Mar | 53° / 35° | 4.1 | 11 | 1.8 | 11.7 | 2.8 |
| Apr | 65° / 46° | 4.6 | 12.2 | 0.4 | 13 | 5.4 |
| May | 74° / 56° | 4.6 | 13 | 0 | 14.1 | 6.2 |
| Jun | 82° / 65° | 4.2 | 12.1 | 0 | 14.7 | 5.8 |
| Jul | 85° / 68° | 3.5 | 11.3 | 0 | 14.5 | 5.2 |
| Aug | 84° / 67° | 3.0 | 9.9 | 0 | 13.5 | 5.7 |
| Sep | 78° / 59° | 2.7 | 7.9 | 0 | 12.3 | 7.2 |
| Oct | 66° / 47° | 3.0 | 8.2 | 0.1 | 11 | 6.2 |
| Nov | 53° / 37° | 3.3 | 8.9 | 0.8 | 9.8 | 3.1 |
| Dec | 43° / 30° | 3.7 | 10.2 | 2.8 | 9.3 | 0.4 |
Cloud cover in April
The sky is clear or mostly clear about 24% of the time in April.
Beyond those clear spells, partly cloudy skies cover about 14% of April, with mostly cloudy or overcast conditions the remaining 61%.
| 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 (%) | 37 | 37 | 37 | 39 | 39 | 39 | 39 | 39 | 41 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 39 | 39 | 39 | 38 | 37 | 38 | 38 | 37 | 37 | 37 | 37 | 38 | 37 |
| Cloudier (%) | 63 | 63 | 63 | 61 | 61 | 61 | 61 | 61 | 59 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 61 | 61 | 61 | 62 | 63 | 62 | 62 | 63 | 63 | 63 | 63 | 62 | 63 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 37 | 63 |
| 2 | 37 | 63 |
| 3 | 37 | 63 |
| 4 | 39 | 61 |
| 5 | 39 | 61 |
| 6 | 39 | 61 |
| 7 | 39 | 61 |
| 8 | 39 | 61 |
| 9 | 41 | 59 |
| 10 | 40 | 60 |
| 11 | 40 | 60 |
| 12 | 40 | 60 |
| 13 | 40 | 60 |
| 14 | 40 | 60 |
| 15 | 40 | 60 |
| 16 | 40 | 60 |
| 17 | 40 | 60 |
| 18 | 39 | 61 |
| 19 | 39 | 61 |
| 20 | 39 | 61 |
| 21 | 38 | 62 |
| 22 | 37 | 63 |
| 23 | 38 | 62 |
| 24 | 38 | 62 |
| 25 | 37 | 63 |
| 26 | 37 | 63 |
| 27 | 37 | 63 |
| 28 | 37 | 63 |
| 29 | 38 | 62 |
| 30 | 37 | 63 |
Chance of precipitation in April
Fairfield gets around 4.6 in of rain and snow over 12.2 wet days in April, the wettest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 41% and peaks near 44% on the wettest days, and about 0 day brings snow.
| 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 (%) | 40 | 41 | 41 | 40 | 40 | 40 | 40 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 40 | 40 | 40 | 41 | 41 | 42 | 42 | 43 | 43 | 43 | 44 | 44 | 44 | 44 |
| Snow chance (%) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 40 | 2 |
| 2 | 41 | 2 |
| 3 | 41 | 2 |
| 4 | 40 | 2 |
| 5 | 40 | 2 |
| 6 | 40 | 2 |
| 7 | 40 | 2 |
| 8 | 39 | 2 |
| 9 | 39 | 2 |
| 10 | 39 | 2 |
| 11 | 39 | 1 |
| 12 | 39 | 1 |
| 13 | 39 | 1 |
| 14 | 39 | 1 |
| 15 | 39 | 1 |
| 16 | 39 | 1 |
| 17 | 40 | 1 |
| 18 | 40 | 1 |
| 19 | 40 | 1 |
| 20 | 41 | 1 |
| 21 | 41 | 1 |
| 22 | 42 | 1 |
| 23 | 42 | 1 |
| 24 | 43 | 1 |
| 25 | 43 | 1 |
| 26 | 43 | 1 |
| 27 | 44 | 0 |
| 28 | 44 | 0 |
| 29 | 44 | 0 |
| 30 | 44 | 0 |
Humidity in April
Most of April feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, April lands in the dry band about 88% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 95 | 95 | 95 | 94 | 94 | 93 | 92 | 92 | 91 | 91 | 90 | 89 | 89 | 89 | 89 | 88 | 88 | 88 | 88 | 88 | 86 | 86 | 85 | 85 | 84 | 83 | 83 | 81 | 80 | 78 |
| Comfortable (%) | 4 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 11 | 11 | 11 | 12 | 12 | 13 | 14 | 14 |
| Humid (%) | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 7 |
| Muggy (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 95 | 4 | 1 | 0 |
| 2 | 95 | 4 | 1 | 0 |
| 3 | 95 | 4 | 1 | 0 |
| 4 | 94 | 5 | 1 | 0 |
| 5 | 94 | 5 | 1 | 0 |
| 6 | 93 | 5 | 2 | 0 |
| 7 | 92 | 6 | 2 | 0 |
| 8 | 92 | 6 | 2 | 0 |
| 9 | 91 | 7 | 2 | 0 |
| 10 | 91 | 7 | 2 | 0 |
| 11 | 90 | 7 | 3 | 0 |
| 12 | 89 | 8 | 3 | 0 |
| 13 | 89 | 8 | 3 | 0 |
| 14 | 89 | 8 | 3 | 0 |
| 15 | 89 | 8 | 3 | 0 |
| 16 | 88 | 9 | 3 | 0 |
| 17 | 88 | 9 | 3 | 0 |
| 18 | 88 | 9 | 3 | 0 |
| 19 | 88 | 9 | 3 | 0 |
| 20 | 88 | 9 | 3 | 0 |
| 21 | 86 | 10 | 4 | 0 |
| 22 | 86 | 10 | 4 | 0 |
| 23 | 85 | 11 | 4 | 0 |
| 24 | 85 | 11 | 4 | 0 |
| 25 | 84 | 11 | 5 | 0 |
| 26 | 83 | 12 | 5 | 0 |
| 27 | 83 | 12 | 5 | 0 |
| 28 | 81 | 13 | 6 | 0 |
| 29 | 80 | 14 | 6 | 0 |
| 30 | 78 | 14 | 7 | 1 |
Wind in April
Winds average 8 mph in April, the windiest month of the year.
Across April, daily wind ranges from about 7 mph on the calmest days to 8 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 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 |
| 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 | calm |
| 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 | 8 | light breeze |
| 15 | 8 | light breeze |
| 16 | 8 | light breeze |
| 17 | 8 | light breeze |
| 18 | 8 | light breeze |
| 19 | 8 | light breeze |
| 20 | 8 | light breeze |
| 21 | 8 | light breeze |
| 22 | 8 | light breeze |
| 23 | 8 | light breeze |
| 24 | 8 | light breeze |
| 25 | 8 | light breeze |
| 26 | 8 | light breeze |
| 27 | 8 | light breeze |
| 28 | 7 | light breeze |
| 29 | 7 | light breeze |
| 30 | 7 | calm |
Sunrise & sunset in April
Daylight runs from about 12 h 24 min at the start of April to 13 h 36 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 72 minutes over April. Sunrise moves from 6:31 AM to 5:48 AM, and sunset from 6:54 PM to 7:23 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) | 12.4 | 12.4 | 12.5 | 12.5 | 12.6 | 12.6 | 12.6 | 12.7 | 12.7 | 12.8 | 12.8 | 12.9 | 12.9 | 12.9 | 13.0 | 13.0 | 13.1 | 13.1 | 13.2 | 13.2 | 13.2 | 13.3 | 13.3 | 13.4 | 13.4 | 13.4 | 13.5 | 13.5 | 13.6 | 13.6 |
| Sunrise (AM) | 6:31 | 6:30 | 6:28 | 6:26 | 6:25 | 6:23 | 6:22 | 6:20 | 6:18 | 6:17 | 6:15 | 6:14 | 6:12 | 6:11 | 6:09 | 6:08 | 6:06 | 6:05 | 6:03 | 6:02 | 6:00 | 5:59 | 5:57 | 5:56 | 5:54 | 5:53 | 5:52 | 5:50 | 5:49 | 5:48 |
| Sunset (PM) | 6:54 | 6:55 | 6:56 | 6:57 | 6:58 | 6:59 | 7:00 | 7:01 | 7:02 | 7:03 | 7:04 | 7:05 | 7:06 | 7:07 | 7:08 | 7:09 | 7:10 | 7:11 | 7:12 | 7:13 | 7:14 | 7:15 | 7:16 | 7:17 | 7:18 | 7:19 | 7:20 | 7:21 | 7:22 | 7:23 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.4 | 6:31 | 6:54 |
| 2 | 12.4 | 6:30 | 6:55 |
| 3 | 12.5 | 6:28 | 6:56 |
| 4 | 12.5 | 6:26 | 6:57 |
| 5 | 12.6 | 6:25 | 6:58 |
| 6 | 12.6 | 6:23 | 6:59 |
| 7 | 12.6 | 6:22 | 7:00 |
| 8 | 12.7 | 6:20 | 7:01 |
| 9 | 12.7 | 6:18 | 7:02 |
| 10 | 12.8 | 6:17 | 7:03 |
| 11 | 12.8 | 6:15 | 7:04 |
| 12 | 12.9 | 6:14 | 7:05 |
| 13 | 12.9 | 6:12 | 7:06 |
| 14 | 12.9 | 6:11 | 7:07 |
| 15 | 13.0 | 6:09 | 7:08 |
| 16 | 13.0 | 6:08 | 7:09 |
| 17 | 13.1 | 6:06 | 7:10 |
| 18 | 13.1 | 6:05 | 7:11 |
| 19 | 13.2 | 6:03 | 7:12 |
| 20 | 13.2 | 6:02 | 7:13 |
| 21 | 13.2 | 6:00 | 7:14 |
| 22 | 13.3 | 5:59 | 7:15 |
| 23 | 13.3 | 5:57 | 7:16 |
| 24 | 13.4 | 5:56 | 7:17 |
| 25 | 13.4 | 5:54 | 7:18 |
| 26 | 13.4 | 5:53 | 7:19 |
| 27 | 13.5 | 5:52 | 7:20 |
| 28 | 13.5 | 5:50 | 7:21 |
| 29 | 13.6 | 5:49 | 7:22 |
| 30 | 13.6 | 5:48 | 7:23 |
Solar energy in April
Average shortwave solar energy reaching the ground each day in April, about 5.09 kWh/m².
For context, solar energy here swings from a low near 1.68 kWh/m² to a high of 6.17 kWh/m² in June across the year — April's 5.09 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) | 4.6 | 4.7 | 4.7 | 4.8 | 4.8 | 4.8 | 4.9 | 4.9 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.3 | 5.3 | 5.3 |
| 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 | 4.6 | Bright |
| 2 | 4.7 | Bright |
| 3 | 4.7 | Bright |
| 4 | 4.8 | Bright |
| 5 | 4.8 | Bright |
| 6 | 4.8 | Bright |
| 7 | 4.9 | Bright |
| 8 | 4.9 | Bright |
| 9 | 5.0 | Bright |
| 10 | 5.0 | Bright |
| 11 | 5.0 | Bright |
| 12 | 5.0 | Bright |
| 13 | 5.0 | Bright |
| 14 | 5.1 | Bright |
| 15 | 5.1 | Bright |
| 16 | 5.1 | Bright |
| 17 | 5.1 | Bright |
| 18 | 5.1 | Bright |
| 19 | 5.1 | Bright |
| 20 | 5.1 | Bright |
| 21 | 5.2 | Bright |
| 22 | 5.2 | Bright |
| 23 | 5.2 | Bright |
| 24 | 5.2 | Bright |
| 25 | 5.2 | Bright |
| 26 | 5.2 | Bright |
| 27 | 5.2 | Bright |
| 28 | 5.3 | Bright |
| 29 | 5.3 | Bright |
| 30 | 5.3 | Bright |
Is April a good time to visit Fairfield?
Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
April is a reasonable time to visit Fairfield for sightseeing.
What to pack for Fairfield in April
From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In April, Fairfield sees daytime highs around 65°F and nights near 46°F. Worth packing: a warm layer, rain gear and sun protection. About 12 days see rain.
UV index in Fairfield in April
Clear-sky midday UV in April 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 Fairfield peaks around June 21 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 | 9 | 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 | 9 | 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 Fairfield in April
Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.
Air quality in Fairfield is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 9 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 | 11 | 11 | 12 | 15 | 17 | 18 | 16 | 12 | 9 | 9 | 9 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 11 | Good |
| Mar | 11 | Good |
| Apr | 12 | Good |
| May | 15 | Moderate |
| Jun | 17 | Moderate |
| Jul | 18 | Moderate |
| Aug | 16 | Moderate |
| Sep | 12 | Moderate |
| Oct | 9 | Good |
| Nov | 9 | Good |
| Dec | 9 | Good |
Where is Fairfield?
Fairfield sits at 39.3°N, 84.6°W, 591 ft above sea level, in United States. The nearest listed city is Hamilton, 3.7 mi away.
Topography around Fairfield
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Fairfield.
Within 2 miles, the terrain around Fairfield has only modest variations in elevation — a maximum elevation change of 390 ft around an average of 620 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 574 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 876 ft.
The land around Fairfield is covered by trees (41%), grassland (27%) and artificial surfaces (26%) within 2 miles, trees (45%) and grassland (27%) within 10 miles, and trees (43%) and cropland (36%) 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 Fairfield (39.3459°, -84.5605°, elevation 591 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).