Today
Sun, Jun 21
Thunderstorm with heavy hail
37°25°
- Rain chance
- 78%
- Precip
- 9.7 mm
- Max wind
- 15 km/h
Yucatán, Mexico · Merida time · 20.97°, -89.62°
Extreme heat today: feels-like temperatures up to 41 °C.
Extreme heat today: feels-like temperatures up to 41 °C.
Derived advisory — not an official warning
Current conditions · 6:45 AM local
27°C
Clear sky
Feels like 29°C
Conditions in Mérida at the moment: clear sky, 26 °C. It feels warmer than it reads, more like 31 °C. Wind is from the SE at 10 km/h. Humidity stands at 82% with sea-level pressure near 1014 hPa.
Thunderstorm with heavy hail · rain likely (78%)
Overcast · extreme UV
Highs 36°, lows 24°. The most active day looks like Friday, when rain chances peak at 84%.
Expect thunderstorm with heavy hail today, between 25 °C and 37 °C. Rain chance peaks at 78% with around 9.7 mm possible. Tomorrow brings overcast with a high of 36 °C and a low of 25 °C. Gusts may reach 40 km/h from the ESE. Tuesday brings thunderstorm with a high of 36 °C and a low of 25 °C. Rain chance peaks at 37% with around 0.2 mm possible.
Today
Sun, Jun 21
Thunderstorm with heavy hail
37°25°
Tomorrow
Mon, Jun 22
Overcast
36°25°
Tuesday
Tue, Jun 23
Thunderstorm
36°25°
Mérida starts the period under clear sky, with the mercury at 26 °C and a feels-like of 31 °C. Today's forecast calls for thunderstorm with heavy hail, topping out near 37 °C before falling back to 25 °C overnight. Winds blow mainly from the ESE around 15 km/h, with gusts up to 38 km/h. Highs ease downward through the week, ranging 34 to 37 °C. Rain is in the picture on today, Thursday, Friday and beyond, with roughly 17 mm expected in total across the week. Tomorrow brings overcast with a high of 36 °C and a 2% chance of precipitation. The UV index reaches 9 today, so sun protection is sensible during the middle of the day. With the apparent temperature pushing into heat-stress territory, limit strenuous outdoor activity in the afternoon and stay hydrated. Sunrise comes at 05:18 and sunset at 18:42, giving 13.4 hours of daylight. Current humidity sits at 82% with pressure near 1014 hPa. Looking further out, Thursday shows thunderstorm with a high around 34 °C, while Saturday ends the week at 34 °C.
37
Good
US AQI · European AQI 18
Air quality in Mérida is currently good, with a US AQI of 37 (European AQI 18). The dominant pollutant right now is ozone. Air quality is healthy; no precautions needed. Fine particulate matter (PM2.5) measures 7.5 µg/m³.
Soil temperatures today read surface 25.1 °C, 6 cm 27.6 °C, 18 cm 29.9 °C, 54 cm 29.6 °C. Soil moisture sits at 0-1 cm at 0.23 m³/m³, 3-9 cm at 0.21 m³/m³, 27-81 cm at 0.3 m³/m³. For wheat, the root-zone reading is within the ideal 0.2-0.35 m³/m³ band. Reference evapotranspiration totals 40 mm against only 17 mm of expected rain — a 23 mm deficit, so irrigation will be needed this week. A suitable spraying window opens around 06:00 on 2026-06-21, with winds at or below 15 km/h and no rain expected. Heat stress is likely for wheat with highs reaching 37 °C (threshold 32 °C). Heat stress is likely for maize with highs reaching 37 °C (threshold 35 °C). Projected growing degree days over the next week: wheat 177, maize 139.
Weather alerts for Mérida (derived from forecast data, not official warnings): Extreme heat today: feels-like temperatures up to 41 °C.
| Variable | Value |
|---|---|
| City | Mérida, Yucatán, Mexico |
| Coordinates | 20.967, -89.62318 |
| Elevation | 10 m |
| Timezone | America/Merida |
| Population | 1,201,000 |
| Observed at (local) | 6:45 AM |
| Temperature (2 m) | 27°C |
| Apparent temperature | 29°C |
| Relative humidity (2 m) | 70% |
| Dew point (2 m) | 21°C |
| Precipitation (last hour) | 0 mm |
| Rain | 0 mm |
| Showers | 0 mm |
| Snowfall | 0 cm |
| Weather code (WMO) | 0 |
| Cloud cover | 5% |
| Surface pressure | 1012 hPa |
| Sea-level pressure | 1014 hPa |
| Wind speed (10 m) | 10 km/h |
| Wind gusts (10 m) | 24 km/h |
| Wind direction (10 m) | 126° (SE) |
| Visibility | 37.3 km |
| UV index | 0 |
| Day / night | Day |
| Today max / min | 37°C / 25°C |
| Today feels-like max / min | 41°C / 29°C |
| Today precipitation sum | 9.7 mm |
| Today rain sum | 1.3 mm |
| Today snowfall sum | 0 cm |
| Today max precip probability | 78% |
| Today max wind / gusts | 15 km/h / 38 km/h |
| Dominant wind direction | 120° (ESE) |
| Sunrise / sunset | 5:18 AM / 6:42 PM |
| Daylight duration | 13h 24m |
| Sunshine duration | 10h 28m |
| Max UV index | 8.85 |
| Reference evapotranspiration (ET₀) | 5.82 mm |
| Topsoil moisture (0–1 cm) | 0.151 m³/m³ |
| Surface soil temperature | 26°C |
| US AQI | 37 |
| European AQI | 18 |
| PM2.5 | 7.5 µg/m³ |
| PM10 | 11.5 µg/m³ |
| Ozone (O₃) | 34 µg/m³ |
| Nitrogen dioxide (NO₂) | 1.6 µg/m³ |
| Sulphur dioxide (SO₂) | 1.4 µg/m³ |
| Carbon monoxide (CO) | 115 µg/m³ |
| Dust | 2 µg/m³ |
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<iframe src="https://weathertomorrow.cloud/embed/city/mx/yucatan/merida" width="320" height="180" frameborder="0" title="Mérida weather" loading="lazy"></iframe>Rain is unlikely in Mérida tomorrow; the precipitation chance stays around 2%.
Today Mérida sees thunderstorm with heavy hail with a high of 37 °C and a low of 25 °C.
Tomorrow's high in Mérida is forecast at 36 °C with overcast.
No, not especially; gusts only reach up to 38 km/h today.
The UV index peaks at 9 today, which is very high.
The sun rises at 05:18 and sets at 18:42 local time.
Air quality is good right now, with a US AQI reading of 37.