Today
Sun, Jun 21
Thunderstorm
30°26°
- Rain chance
- 83%
- Precip
- 2.5 mm
- Max wind
- 17 km/h
Saipan weather forecast
Saipan, Northern Mariana Islands · Saipan time · 15.21°, 145.75°
Current conditions · 11:45 PM local
Current conditions in Saipan
27°C
Mainly clear
Feels like 31°C
- Humidity
- 79%
- Wind
- 8 km/h E
- Gusts
- 13 km/h
- UV index
- 0
- Visibility
- 15.3 km
Right now
Right now in Saipan, it's mainly clear with the temperature at 27 °C. It feels warmer than it reads, more like 31 °C. Wind is from the E at 8 km/h. Humidity stands at 80% with sea-level pressure near 1011 hPa.
At a glance
Today
30° / 26°Thunderstorm · rain likely (83%)
Tomorrow
30° / 25°Thunderstorm · rain likely (86%)
Upcoming · to Saturday
30° / 24°Highs 30°, lows 24°. The most active day looks like Wednesday, when rain chances peak at 96%.
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Next 3 days
Expect thunderstorm today, between 26 °C and 30 °C. Rain chance peaks at 83% with around 2.5 mm possible. Tomorrow brings thunderstorm with a high of 30 °C and a low of 24 °C. Rain chance peaks at 86% with around 5.5 mm possible. Tuesday brings thunderstorm with slight hail with a high of 28 °C and a low of 24 °C. Rain chance peaks at 88% with around 13.8 mm possible. Gusts may reach 53 km/h from the NW.
Tomorrow
Mon, Jun 22
Thunderstorm
30°25°
- Rain chance
- 86%
- Precip
- 5.5 mm
- Max wind
- 18 km/h
Tuesday
Tue, Jun 23
Thunderstorm with slight hail
28°24°
- Rain chance
- 88%
- Precip
- 13.8 mm
- Max wind
- 23 km/h
Next 48 hours
- 12 AM27°7%12 km/h
- 1 AM27°6%12 km/h
- 2 AM26°6%13 km/h
- 3 AM26°9%11 km/h
- 4 AM26°14%11 km/h
- 5 AM26°25%11 km/h
- 6 AM26°39%13 km/h
- 7 AM27°51%15 km/h
- 8 AM28°58%17 km/h
- 9 AM28°63%17 km/h
- 10 AM30°67%15 km/h
- 11 AM30°75%12 km/h
- 12 PM30°83%11 km/h
- 1 PM30°82%12 km/h
- 2 PM30°65%12 km/h
- 3 PM30°40%12 km/h
- 4 PM30°20%12 km/h
- 5 PM29°11%10 km/h
- 6 PM28°7%10 km/h
- 7 PM27°6%10 km/h
- 8 PM27°6%10 km/h
- 9 PM27°9%9 km/h
- 10 PM27°14%7 km/h
- 11 PM27°21%7 km/h
- 12 AM27°30%8 km/h
- 1 AM25°37%13 km/h
- 2 AM25°41%5 km/h
- 3 AM25°42%5 km/h
- 4 AM25°41%6 km/h
- 5 AM25°35%5 km/h
- 6 AM25°27%1 km/h
- 7 AM26°24%5 km/h
- 8 AM28°29%3 km/h
- 9 AM28°40%2 km/h
- 10 AM29°51%2 km/h
- 11 AM29°64%11 km/h
- 12 PM29°78%10 km/h
- 1 PM29°86%5 km/h
- 2 PM30°84%8 km/h
- 3 PM29°76%10 km/h
- 4 PM28°71%12 km/h
- 5 PM28°72%13 km/h
- 6 PM26°75%18 km/h
- 7 PM25°75%14 km/h
- 8 PM26°69%11 km/h
- 9 PM25°59%13 km/h
- 10 PM25°53%9 km/h
- 11 PM26°53%7 km/h
In depth
Saipan starts the period under mainly clear, with the mercury at 27 °C and a feels-like of 31 °C. Today's forecast calls for thunderstorm, topping out near 30 °C before falling back to 26 °C overnight. Winds blow mainly from the ESE around 17 km/h, with gusts up to 40 km/h. Daytime highs hold fairly steady this week, staying within 28 to 30 °C. Rain is in the picture on today, tomorrow, Tuesday and beyond, with roughly 46 mm expected in total across the week. Tomorrow brings thunderstorm with a high of 30 °C and a 86% chance of precipitation. The UV index reaches 9 today, so sun protection is sensible during the middle of the day. Sunrise comes at 05:47 and sunset at 18:49, giving 13 hours of daylight. Current humidity sits at 80% with pressure near 1011 hPa. Looking further out, Thursday shows thunderstorm with a high around 30 °C, while Saturday ends the week at 30 °C. Forecast details are refreshed throughout the day as new model runs arrive, so check back for the latest figures.
Air quality
18
Good
US AQI · European AQI 9
Air quality in Saipan is currently good, with a US AQI of 18 (European AQI 9). The dominant pollutant right now is ozone. Air quality is healthy; no precautions needed. Fine particulate matter (PM2.5) measures 4.6 µg/m³.
Pollutants
- PM2.5
- 4.6 µg/m³
- PM10
- 7.9 µg/m³
- Ozone (O₃)
- 22 µg/m³
- NO₂
- 0.2 µg/m³
- SO₂
- 0.2 µg/m³
- CO
- 91 µg/m³
- Dust
- 0 µg/m³
Sun & UV
- Sunrise
- 5:47 AM
- Sunset
- 6:49 PM
- Daylight
- 13h 02m
- Max UV
- 9.05 Very high
Wind
- Wind
- 8 km/h
- Gusts
- 13 km/h
- Direction
- E (82°)
Farming weather
Soil temperatures today read surface 25.7 °C, 6 cm 26.9 °C, 18 cm 28.8 °C, 54 cm 27.8 °C. Soil moisture sits at 0-1 cm at 0.28 m³/m³, 3-9 cm at 0.28 m³/m³, 27-81 cm at 0.29 m³/m³. For wheat, the root-zone reading is within the ideal 0.2-0.35 m³/m³ band. Forecast rain (46 mm) roughly covers crop water demand (ET0 34 mm), so irrigation can likely be paused. A suitable spraying window opens around 15:00 on 2026-06-21, with winds at or below 15 km/h and no rain expected. Projected growing degree days over the next week: wheat 159, maize 121.
- Topsoil moisture
- 0.294 m³/m³
- Soil temp
- 26°C
- ET₀ today
- 5.49 mm
- Spray window
- ~5:00
- Rain (next 7d)
- 45.8 mm
- Wind
- 8 km/h
- Humidity
- 79%
Advisory summary
No weather alert thresholds are crossed for Saipan in the current forecast (derived from forecast data, not official warnings). Conditions may still change — check back for updates.
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All data for Saipan
| Variable | Value |
|---|---|
| City | Saipan, Saipan, Northern Mariana Islands |
| Coordinates | 15.21233, 145.7545 |
| Elevation | 5 m |
| Timezone | Pacific/Saipan |
| Population | 48,220 |
| Observed at (local) | 11:45 PM |
| Temperature (2 m) | 27°C |
| Apparent temperature | 31°C |
| Relative humidity (2 m) | 79% |
| Dew point (2 m) | 23°C |
| Precipitation (last hour) | 0 mm |
| Rain | 0 mm |
| Showers | 0 mm |
| Snowfall | 0 cm |
| Weather code (WMO) | 1 |
| Cloud cover | 20% |
| Surface pressure | 988 hPa |
| Sea-level pressure | 1011 hPa |
| Wind speed (10 m) | 8 km/h |
| Wind gusts (10 m) | 13 km/h |
| Wind direction (10 m) | 82° (E) |
| Visibility | 15.3 km |
| UV index | 0 |
| Day / night | Night |
| Today max / min | 30°C / 26°C |
| Today feels-like max / min | 36°C / 29°C |
| Today precipitation sum | 2.5 mm |
| Today rain sum | 1.4 mm |
| Today snowfall sum | 0 cm |
| Today max precip probability | 83% |
| Today max wind / gusts | 17 km/h / 40 km/h |
| Dominant wind direction | 108° (ESE) |
| Sunrise / sunset | 5:47 AM / 6:49 PM |
| Daylight duration | 13h 02m |
| Sunshine duration | 12h 03m |
| Max UV index | 9.05 |
| Reference evapotranspiration (ET₀) | 5.49 mm |
| Topsoil moisture (0–1 cm) | 0.294 m³/m³ |
| Surface soil temperature | 26°C |
| US AQI | 18 |
| European AQI | 9 |
| PM2.5 | 4.6 µg/m³ |
| PM10 | 7.9 µg/m³ |
| Ozone (O₃) | 22 µg/m³ |
| Nitrogen dioxide (NO₂) | 0.2 µg/m³ |
| Sulphur dioxide (SO₂) | 0.2 µg/m³ |
| Carbon monoxide (CO) | 91 µg/m³ |
| Dust | 0 µg/m³ |
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<iframe src="https://weathertomorrow.cloud/embed/city/mp/saipan/saipan" width="320" height="180" frameborder="0" title="Saipan weather" loading="lazy"></iframe>Frequently asked questions
Will it rain in Saipan tomorrow?
Rain is likely in Saipan tomorrow — the chance of precipitation reaches 86%, with around 5.5 mm expected.
What is the temperature in Saipan today?
Today Saipan sees thunderstorm with a high of 30 °C and a low of 26 °C.
How hot will it be in Saipan tomorrow?
Tomorrow's high in Saipan is forecast at 30 °C with thunderstorm.
Is it windy in Saipan today?
No, not especially; gusts only reach up to 40 km/h today.
What is the UV index in Saipan today?
The UV index peaks at 9 today, which is very high.
What time is sunrise and sunset in Saipan today?
The sun rises at 05:47 and sets at 18:49 local time.
Is the air quality in Saipan good today?
Air quality is good right now, with a US AQI reading of 18.