Bolton weather in March
In March, Bolton sees average daytime highs of 4°C and overnight lows near -5°C, with 55 mm of precipitation across 10 wet days and about 11.6 hours of daylight. It is the 9th-warmest and 11th-wettest month of the year here.
Highs climb over the month, from about 1°C in the first days to 7°C by the end. The sky is clear or mostly clear about 23% of the time in March, and the air most often feels dry.
Daylight stretches from about 10 h 54 min at the start of March to 12 h 24 min by month's end. Set against the rest of the year, March is Bolton's 8th-clearest and 1st-windiest month. For the whole year in context, see Bolton's year-round climate.
- Daytime high
- 4°
- 9th warmest
- Overnight low
- -5°
- 4th coldest
- Precipitation
- 55 mm
- 10 wet days
- Daylight
- 11 h 36 min
- 6:40 AM – 6:17 PM
- Cloud cover
- 67%
- 8th clearest
- Wind
- 13 km/h
- 1st windiest
- Solar energy
- 3.92 kWh/m²
- Travel score
- 0.3
- out of 10
Bolton is town in Caledon, Ontario, Canada.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in March
Highs climb over the month, from about 1°C in the first days to 7°C by the end.
A typical March day in Bolton reaches about 4°C in the afternoon and slips back to -5°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between -3°C and 13°C. Set against its neighbours, March runs about 5°C warmer than February and about 7°C cooler than April.
| 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 (°C) | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 8 | 8 | 8 |
| Avg low (°C) | -9 | -8 | -8 | -8 | -8 | -8 | -7 | -7 | -7 | -7 | -6 | -6 | -6 | -6 | -5 | -5 | -5 | -5 | -4 | -4 | -4 | -4 | -3 | -3 | -3 | -3 | -2 | -2 | -2 | -2 | -1 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 1 | -9 |
| 2 | 1 | -8 |
| 3 | 1 | -8 |
| 4 | 1 | -8 |
| 5 | 2 | -8 |
| 6 | 2 | -8 |
| 7 | 2 | -7 |
| 8 | 2 | -7 |
| 9 | 3 | -7 |
| 10 | 3 | -7 |
| 11 | 3 | -6 |
| 12 | 3 | -6 |
| 13 | 4 | -6 |
| 14 | 4 | -6 |
| 15 | 4 | -5 |
| 16 | 4 | -5 |
| 17 | 5 | -5 |
| 18 | 5 | -5 |
| 19 | 5 | -4 |
| 20 | 5 | -4 |
| 21 | 6 | -4 |
| 22 | 6 | -4 |
| 23 | 6 | -3 |
| 24 | 6 | -3 |
| 25 | 7 | -3 |
| 26 | 7 | -3 |
| 27 | 7 | -2 |
| 28 | 7 | -2 |
| 29 | 8 | -2 |
| 30 | 8 | -2 |
| 31 | 8 | -1 |
How March really feels in Bolton
Once humidity and wind are folded in, March averages 0 days that feel above 32°C and 31 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in March is cold — wind chill drags the overnight "feels like" below the raw low.
Bolton weather by month
How March compares with the rest of the year at a glance. March is the 9th-warmest and 11th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | -2° / -10° | 56 | 9.6 | 8.7 | 9.1 | 0.0 |
| Feb | -1° / -10° | 47 | 7.9 | 7.2 | 10.2 | 0.0 |
| Mar | 4° / -5° | 55 | 10 | 5.6 | 11.6 | 0.3 |
| Apr | 12° / 1° | 76 | 11 | 2.6 | 13.2 | 2.8 |
| May | 18° / 7° | 81 | 11.3 | 0 | 14.5 | 5.6 |
| Jun | 23° / 12° | 88 | 11.5 | 0 | 15.2 | 6.5 |
| Jul | 26° / 15° | 83 | 11 | 0 | 14.9 | 6.6 |
| Aug | 25° / 14° | 79 | 9.7 | 0 | 13.8 | 6.9 |
| Sep | 21° / 10° | 72 | 9.5 | 0 | 12.3 | 6.5 |
| Oct | 13° / 4° | 73 | 11 | 0.4 | 10.8 | 3.6 |
| Nov | 6° / -1° | 67 | 10.2 | 3.5 | 9.5 | 0.7 |
| Dec | 1° / -6° | 57 | 10.2 | 8 | 8.8 | 0.0 |
Cloud cover in March
The sky is clear or mostly clear about 23% of the time in March.
Beyond those clear spells, partly cloudy skies cover about 11% of March, with mostly cloudy or overcast conditions the remaining 66%.
| 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 (%) | 29 | 29 | 30 | 30 | 30 | 31 | 32 | 32 | 33 | 33 | 33 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 37 | 37 | 37 | 37 | 37 | 37 | 36 | 36 | 36 | 36 | 35 | 35 | 35 |
| Cloudier (%) | 71 | 71 | 70 | 70 | 70 | 69 | 68 | 68 | 67 | 67 | 67 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 63 | 63 | 63 | 63 | 63 | 63 | 64 | 64 | 64 | 64 | 65 | 65 | 65 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 29 | 71 |
| 2 | 29 | 71 |
| 3 | 30 | 70 |
| 4 | 30 | 70 |
| 5 | 30 | 70 |
| 6 | 31 | 69 |
| 7 | 32 | 68 |
| 8 | 32 | 68 |
| 9 | 33 | 67 |
| 10 | 33 | 67 |
| 11 | 33 | 67 |
| 12 | 35 | 65 |
| 13 | 35 | 65 |
| 14 | 35 | 65 |
| 15 | 35 | 65 |
| 16 | 35 | 65 |
| 17 | 35 | 65 |
| 18 | 35 | 65 |
| 19 | 37 | 63 |
| 20 | 37 | 63 |
| 21 | 37 | 63 |
| 22 | 37 | 63 |
| 23 | 37 | 63 |
| 24 | 37 | 63 |
| 25 | 36 | 64 |
| 26 | 36 | 64 |
| 27 | 36 | 64 |
| 28 | 36 | 64 |
| 29 | 35 | 65 |
| 30 | 35 | 65 |
| 31 | 35 | 65 |
Chance of precipitation in March
Bolton gets around 55 mm of rain and snow over 10 wet days in March. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 32% and peaks near 35% on the wettest days, and about 6 days bring 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 34 | 34 | 34 | 34 | 34 | 34 | 33 | 33 | 33 | 32 | 32 | 31 | 31 | 31 | 31 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 31 | 32 | 32 | 33 | 33 | 34 | 35 | 35 | 35 |
| Snow chance (%) | 26 | 26 | 25 | 25 | 24 | 24 | 23 | 22 | 22 | 21 | 21 | 20 | 20 | 19 | 19 | 18 | 18 | 17 | 17 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 34 | 26 |
| 2 | 34 | 26 |
| 3 | 34 | 25 |
| 4 | 34 | 25 |
| 5 | 34 | 24 |
| 6 | 34 | 24 |
| 7 | 33 | 23 |
| 8 | 33 | 22 |
| 9 | 33 | 22 |
| 10 | 32 | 21 |
| 11 | 32 | 21 |
| 12 | 31 | 20 |
| 13 | 31 | 20 |
| 14 | 31 | 19 |
| 15 | 31 | 19 |
| 16 | 30 | 18 |
| 17 | 30 | 18 |
| 18 | 30 | 17 |
| 19 | 30 | 17 |
| 20 | 30 | 16 |
| 21 | 30 | 16 |
| 22 | 31 | 15 |
| 23 | 31 | 15 |
| 24 | 32 | 15 |
| 25 | 32 | 14 |
| 26 | 33 | 14 |
| 27 | 33 | 14 |
| 28 | 34 | 14 |
| 29 | 35 | 14 |
| 30 | 35 | 14 |
| 31 | 35 | 14 |
Humidity in March
Most of March feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, March lands in the dry band about 100% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Dry (%) | |
|---|---|
| 1 | 100 |
| 2 | 100 |
| 3 | 100 |
| 4 | 100 |
| 5 | 100 |
| 6 | 100 |
| 7 | 100 |
| 8 | 100 |
| 9 | 100 |
| 10 | 100 |
| 11 | 100 |
| 12 | 100 |
| 13 | 100 |
| 14 | 100 |
| 15 | 100 |
| 16 | 100 |
| 17 | 100 |
| 18 | 100 |
| 19 | 100 |
| 20 | 100 |
| 21 | 100 |
| 22 | 100 |
| 23 | 100 |
| 24 | 100 |
| 25 | 100 |
| 26 | 100 |
| 27 | 100 |
| 28 | 100 |
| 29 | 100 |
| 30 | 100 |
| 31 | 100 |
Wind in March
Winds average 13 km/h in March, the windiest month of the year.
Across March, daily wind ranges from about 13 km/h on the calmest days to 14 km/h 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 (km/h) | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
| 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 | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 13 | light breeze |
| 2 | 13 | light breeze |
| 3 | 13 | light breeze |
| 4 | 13 | light breeze |
| 5 | 14 | light breeze |
| 6 | 14 | light breeze |
| 7 | 14 | light breeze |
| 8 | 14 | light breeze |
| 9 | 14 | light breeze |
| 10 | 14 | light breeze |
| 11 | 14 | light breeze |
| 12 | 14 | light breeze |
| 13 | 14 | light breeze |
| 14 | 14 | light breeze |
| 15 | 13 | light breeze |
| 16 | 13 | light breeze |
| 17 | 13 | light breeze |
| 18 | 13 | light breeze |
| 19 | 13 | light breeze |
| 20 | 13 | light breeze |
| 21 | 13 | light breeze |
| 22 | 13 | light breeze |
| 23 | 13 | light breeze |
| 24 | 13 | light breeze |
| 25 | 13 | light breeze |
| 26 | 13 | light breeze |
| 27 | 13 | light breeze |
| 28 | 13 | light breeze |
| 29 | 13 | light breeze |
| 30 | 13 | light breeze |
| 31 | 13 | light breeze |
Sunrise & sunset in March
Daylight runs from about 10 h 54 min at the start of March to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 90 minutes over March. Sunrise moves from 7:06 AM to 6:12 AM, and sunset from 5:58 PM to 6:36 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) | 10.9 | 10.9 | 11.0 | 11.0 | 11.1 | 11.1 | 11.2 | 11.2 | 11.3 | 11.3 | 11.4 | 11.4 | 11.5 | 11.5 | 11.6 | 11.6 | 11.7 | 11.7 | 11.8 | 11.8 | 11.9 | 11.9 | 12.0 | 12.0 | 12.1 | 12.1 | 12.2 | 12.2 | 12.3 | 12.3 | 12.4 |
| Sunrise (AM) | 7:06 | 7:05 | 7:03 | 7:01 | 6:59 | 6:58 | 6:56 | 6:54 | 6:52 | 6:51 | 6:49 | 6:47 | 6:45 | 6:44 | 6:42 | 6:40 | 6:38 | 6:36 | 6:34 | 6:32 | 6:31 | 6:29 | 6:27 | 6:25 | 6:23 | 6:21 | 6:19 | 6:18 | 6:16 | 6:14 | 6:12 |
| Sunset (PM) | 5:58 | 5:59 | 6:01 | 6:02 | 6:03 | 6:05 | 6:06 | 6:07 | 6:08 | 6:10 | 6:11 | 6:12 | 6:14 | 6:15 | 6:16 | 6:17 | 6:19 | 6:20 | 6:21 | 6:22 | 6:24 | 6:25 | 6:26 | 6:27 | 6:29 | 6:30 | 6:31 | 6:32 | 6:33 | 6:35 | 6:36 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 10.9 | 7:06 | 5:58 |
| 2 | 10.9 | 7:05 | 5:59 |
| 3 | 11.0 | 7:03 | 6:01 |
| 4 | 11.0 | 7:01 | 6:02 |
| 5 | 11.1 | 6:59 | 6:03 |
| 6 | 11.1 | 6:58 | 6:05 |
| 7 | 11.2 | 6:56 | 6:06 |
| 8 | 11.2 | 6:54 | 6:07 |
| 9 | 11.3 | 6:52 | 6:08 |
| 10 | 11.3 | 6:51 | 6:10 |
| 11 | 11.4 | 6:49 | 6:11 |
| 12 | 11.4 | 6:47 | 6:12 |
| 13 | 11.5 | 6:45 | 6:14 |
| 14 | 11.5 | 6:44 | 6:15 |
| 15 | 11.6 | 6:42 | 6:16 |
| 16 | 11.6 | 6:40 | 6:17 |
| 17 | 11.7 | 6:38 | 6:19 |
| 18 | 11.7 | 6:36 | 6:20 |
| 19 | 11.8 | 6:34 | 6:21 |
| 20 | 11.8 | 6:32 | 6:22 |
| 21 | 11.9 | 6:31 | 6:24 |
| 22 | 11.9 | 6:29 | 6:25 |
| 23 | 12.0 | 6:27 | 6:26 |
| 24 | 12.0 | 6:25 | 6:27 |
| 25 | 12.1 | 6:23 | 6:29 |
| 26 | 12.1 | 6:21 | 6:30 |
| 27 | 12.2 | 6:19 | 6:31 |
| 28 | 12.2 | 6:18 | 6:32 |
| 29 | 12.3 | 6:16 | 6:33 |
| 30 | 12.3 | 6:14 | 6:35 |
| 31 | 12.4 | 6:12 | 6:36 |
Solar energy in March
Average shortwave solar energy reaching the ground each day in March, about 3.92 kWh/m².
For context, solar energy here swings from a low near 1.27 kWh/m² to a high of 6.31 kWh/m² in June across the year — March's 3.92 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) | 3.2 | 3.3 | 3.3 | 3.4 | 3.4 | 3.5 | 3.5 | 3.6 | 3.6 | 3.7 | 3.7 | 3.8 | 3.8 | 3.9 | 3.9 | 4.0 | 4.0 | 4.0 | 4.1 | 4.1 | 4.2 | 4.2 | 4.2 | 4.2 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.4 | 4.4 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 3.2 | Moderate |
| 2 | 3.3 | Moderate |
| 3 | 3.3 | Moderate |
| 4 | 3.4 | Moderate |
| 5 | 3.4 | Moderate |
| 6 | 3.5 | Moderate |
| 7 | 3.5 | Moderate |
| 8 | 3.6 | Moderate |
| 9 | 3.6 | Moderate |
| 10 | 3.7 | Moderate |
| 11 | 3.7 | Moderate |
| 12 | 3.8 | Moderate |
| 13 | 3.8 | Moderate |
| 14 | 3.9 | Moderate |
| 15 | 3.9 | Moderate |
| 16 | 4.0 | Moderate |
| 17 | 4.0 | Bright |
| 18 | 4.0 | Bright |
| 19 | 4.1 | Bright |
| 20 | 4.1 | Bright |
| 21 | 4.2 | Bright |
| 22 | 4.2 | Bright |
| 23 | 4.2 | Bright |
| 24 | 4.2 | Bright |
| 25 | 4.3 | Bright |
| 26 | 4.3 | Bright |
| 27 | 4.3 | Bright |
| 28 | 4.3 | Bright |
| 29 | 4.3 | Bright |
| 30 | 4.4 | Bright |
| 31 | 4.4 | Bright |
Is March a good time to visit Bolton?
Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
March is a weaker month for outdoor sightseeing in Bolton.
What to pack for Bolton in March
From March's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In March, Bolton sees daytime highs around 4°C and nights near -5°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 10 days see rain.
Sea temperature near Bolton in March
The nearest coast averages about 3°C in March — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 41 km away) is warmest in August at about 21°C and coldest in February near 3°C.
It's comfortable for a long swim from Jul 20 to Sep 2 — about 1.5 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 4 | 3 | 3 | 4 | 7 | 15 | 20 | 21 | 19 | 13 | 8 | 5 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Cool | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 4 | Bracing |
| Feb | 3 | Bracing |
| Mar | 3 | Bracing |
| Apr | 4 | Bracing |
| May | 7 | Bracing |
| Jun | 15 | Bracing |
| Jul | 20 | Cool |
| Aug | 21 | Refreshing |
| Sep | 19 | Cool |
| Oct | 13 | Bracing |
| Nov | 8 | Bracing |
| Dec | 5 | Bracing |
UV index in Bolton in March
Clear-sky midday UV in March peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Bolton peaks around June 22 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 1 (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) | 1 | 2 | 4 | 5 | 6 | 8 | 8 | 6 | 5 | 3 | 2 | 1 |
| Level | Low | Low | Moderate | High | High | Very high | Very high | High | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 4 | Moderate |
| Apr | 5 | High |
| May | 6 | High |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 6 | High |
| Sep | 5 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Air quality in Bolton in March
Average fine-particle pollution (PM2.5) through the year — so you can see where March falls, not just the annual average.
Air quality in Bolton is worst in May — around 19 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (November, 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) | 11 | 14 | 16 | 17 | 19 | 18 | 18 | 16 | 14 | 10 | 9 | 9 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 14 | Moderate |
| Mar | 16 | Moderate |
| Apr | 17 | Moderate |
| May | 19 | Moderate |
| Jun | 18 | Moderate |
| Jul | 18 | Moderate |
| Aug | 16 | Moderate |
| Sep | 14 | Moderate |
| Oct | 10 | Good |
| Nov | 9 | Good |
| Dec | 9 | Good |
Where is Bolton?
Bolton sits at 43.9°N, 79.7°W, 221 m above sea level, in Canada. The nearest listed city is Mount Olive-Silverstone-Jamestown, 19 km away.
Topography around Bolton
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Bolton.
Within 3 km, the terrain around Bolton has only modest variations in elevation — a maximum elevation change of 83 m around an average of 249 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 323 m; within 80 km, significant variations in elevation — a maximum elevation change of 473 m.
The land around Bolton is covered by trees (37%) and artificial surfaces (29%) within 3 km, trees (35%), cropland (27%) and grassland (25%) within 16 km, and trees (30%), cropland (29%) and water (21%) within 80 km.
Canada travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 83% of US
- price level, 2025
- GDP per capita
- $55,698
- 2025
- Happiness
- 6.7 / 10
- World Happiness, 2025
- Safe drinking water
- 97%
- of population, 2024
- Homicide rate
- 2
- per 100k, 2023
- Road deaths
- 5.3
- 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 Bolton (43.8795°, -79.7379°, elevation 221 m), 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).