Today
Sun, Jun 21
Thunderstorm
93°79°
- Rain chance
- 26%
- Precip
- 0 in
- Max wind
- 17 mph
Harlingen air quality
Texas, United States · Chicago time · 26.19°, -97.70°
Current conditions · 8:15 PM local
Current conditions in Harlingen
87°F
Thunderstorm
Feels like 94°F
- Humidity
- 94%
- Wind
- 13 mph SSE
- Gusts
- 24 mph
- UV index
- 0
- Visibility
- 8 mi
Air quality
40
Good
US AQI · European AQI 19
Air quality in Harlingen is currently good, with a US AQI of 40 (European AQI 19). The dominant pollutant right now is ozone. Air quality is healthy; no precautions needed. Fine particulate matter (PM2.5) measures 8 µg/m³.
Pollutants
- PM2.5
- 8 µg/m³
- PM10
- 11.3 µg/m³
- Ozone (O₃)
- 47 µg/m³
- NO₂
- 2 µg/m³
- SO₂
- 0.8 µg/m³
- CO
- 119 µg/m³
- Dust
- 0 µg/m³
AQI computed from the CAMS air quality model via Open-Meteo. Bands follow the US EPA scale.
Right now
Conditions in Harlingen at the moment: thunderstorm, 30 °C. It feels warmer than it reads, more like 34 °C. Wind is from the SSE at 21 km/h, gusting to 39 km/h. Humidity stands at 74% with sea-level pressure near 1008 hPa.
At a glance
Today
93° / 79°Thunderstorm · extreme UV
Tomorrow
96° / 81°Thunderstorm · extreme UV
Upcoming · to Saturday
96° / 76°A steady stretch: highs near 96°, lows around 76°, and no day above a 6% rain chance through Saturday.
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Next 3 days
Expect thunderstorm today, between 26 °C and 34 °C. Gusts may reach 45 km/h from the SSE. Tomorrow brings thunderstorm with a high of 35 °C and a low of 27 °C. Gusts may reach 55 km/h from the SSE. Tuesday looks like thunderstorm; temperatures run from 26 °C up to 36 °C. Gusts may reach 43 km/h from the SE.
Tomorrow
Mon, Jun 22
Thunderstorm
96°81°
- Rain chance
- 0%
- Precip
- 0 in
- Max wind
- 20 mph
Tuesday
Tue, Jun 23
Thunderstorm
96°79°
- Rain chance
- 6%
- Precip
- 0 in
- Max wind
- 18 mph
Next 48 hours
- 12 AM81°26%2 mph
- 1 AM81°26%3 mph
- 2 AM80°22%0 mph
- 3 AM79°20%4 mph
- 4 AM80°20%2 mph
- 5 AM81°17%3 mph
- 6 AM81°13%5 mph
- 7 AM81°11%3 mph
- 8 AM82°12%5 mph
- 9 AM83°9%9 mph
- 10 AM83°10%8 mph
- 11 AM86°4%13 mph
- 12 PM88°1%13 mph
- 1 PM90°1%15 mph
- 2 PM91°1%14 mph
- 3 PM93°0%15 mph
- 4 PM93°0%16 mph
- 5 PM93°0%17 mph
- 6 PM91°0%16 mph
- 7 PM90°0%14 mph
- 8 PM87°0%13 mph
- 9 PM85°0%12 mph
- 10 PM83°0%12 mph
- 11 PM83°0%12 mph
- 12 AM82°0%12 mph
- 1 AM82°0%13 mph
- 2 AM82°0%13 mph
- 3 AM81°0%12 mph
- 4 AM81°0%12 mph
- 5 AM81°0%12 mph
- 6 AM81°0%12 mph
- 7 AM81°0%12 mph
- 8 AM83°0%16 mph
- 9 AM86°0%18 mph
- 10 AM89°0%18 mph
- 11 AM91°0%18 mph
- 12 PM93°0%19 mph
- 1 PM94°0%20 mph
- 2 PM95°0%19 mph
- 3 PM96°0%18 mph
- 4 PM95°0%18 mph
- 5 PM94°0%17 mph
- 6 PM92°0%17 mph
- 7 PM90°0%16 mph
- 8 PM87°0%15 mph
- 9 PM85°0%13 mph
- 10 PM83°0%12 mph
- 11 PM83°0%11 mph
In depth
Harlingen starts the period under thunderstorm, with the mercury at 30 °C and a feels-like of 34 °C. Today's forecast calls for thunderstorm, topping out near 34 °C before falling back to 26 °C overnight. Winds blow mainly from the SSE around 27 km/h, with gusts up to 45 km/h. Daytime highs hold fairly steady this week, staying within 34 to 36 °C. No meaningful rain shows up in the seven-day outlook, so dry conditions should dominate. Tomorrow brings thunderstorm with a high of 35 °C and a 0% chance of precipitation. The UV index reaches 8 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 06:39 and sunset at 20:25, giving 13.8 hours of daylight. Current humidity sits at 74% with pressure near 1008 hPa. Looking further out, Thursday shows thunderstorm with a high around 35 °C, while Saturday ends the week at 35 °C.
Sun & UV
- Sunrise
- 6:39 AM
- Sunset
- 8:25 PM
- Daylight
- 13h 47m
- Max UV
- 8.1 Very high
Wind
- Wind
- 13 mph
- Gusts
- 24 mph
- Direction
- SSE (158°)
Farming weather
Soil temperatures today read surface 27 °C, 6 cm 28.4 °C, 18 cm 29.6 °C, 54 cm 28.6 °C. Soil moisture sits at 0-1 cm at 0.21 m³/m³, 3-9 cm at 0.21 m³/m³, 27-81 cm at 0.18 m³/m³. For maize, the root-zone reading is within the ideal 0.2-0.35 m³/m³ band. Reference evapotranspiration totals 52 mm against only 0 mm of expected rain — a 52 mm deficit, so irrigation will be needed this week. A suitable spraying window opens around 07:00 on 2026-06-21, with winds at or below 15 km/h and no rain expected. Heat stress is likely for maize with highs reaching 36 °C (threshold 35 °C). Heat stress is likely for wheat with highs reaching 36 °C (threshold 32 °C). Projected growing degree days over the next week: maize 144, wheat 182.
- Topsoil moisture
- 0.265 m³/m³
- Soil temp
- 80°F
- ET₀ today
- 4.56 mm
- Spray window
- ~5:00
- Rain (next 7d)
- 0 in
- Wind
- 13 mph
- Humidity
- 94%
Advisory summary
No weather alert thresholds are crossed for Harlingen 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 Harlingen
| Variable | Value |
|---|---|
| City | Harlingen, Texas, United States |
| Coordinates | 26.19063, -97.6961 |
| Elevation | 12 m |
| Timezone | America/Chicago |
| Population | 65,774 |
| Observed at (local) | 8:15 PM |
| Temperature (2 m) | 87°F |
| Apparent temperature | 94°F |
| Relative humidity (2 m) | 94% |
| Dew point (2 m) | 79°F |
| Precipitation (last hour) | 0 in |
| Rain | 0 in |
| Showers | 0 in |
| Snowfall | 0 in |
| Weather code (WMO) | 95 |
| Cloud cover | 100% |
| Surface pressure | 29.7 inHg |
| Sea-level pressure | 29.8 inHg |
| Wind speed (10 m) | 13 mph |
| Wind gusts (10 m) | 24 mph |
| Wind direction (10 m) | 158° (SSE) |
| Visibility | 8 mi |
| UV index | 0 |
| Day / night | Day |
| Today max / min | 93°F / 79°F |
| Today feels-like max / min | 101°F / 90°F |
| Today precipitation sum | 0 in |
| Today rain sum | 0 in |
| Today snowfall sum | 0 in |
| Today max precip probability | 26% |
| Today max wind / gusts | 17 mph / 28 mph |
| Dominant wind direction | 160° (SSE) |
| Sunrise / sunset | 6:39 AM / 8:25 PM |
| Daylight duration | 13h 47m |
| Sunshine duration | 6h 54m |
| Max UV index | 8.1 |
| Reference evapotranspiration (ET₀) | 4.56 mm |
| Topsoil moisture (0–1 cm) | 0.265 m³/m³ |
| Surface soil temperature | 80°F |
| US AQI | 40 |
| European AQI | 19 |
| PM2.5 | 8 µg/m³ |
| PM10 | 11.3 µg/m³ |
| Ozone (O₃) | 47 µg/m³ |
| Nitrogen dioxide (NO₂) | 2 µg/m³ |
| Sulphur dioxide (SO₂) | 0.8 µg/m³ |
| Carbon monoxide (CO) | 119 µg/m³ |
| Dust | 0 µg/m³ |
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<iframe src="https://weathertomorrow.cloud/embed/city/us/texas/harlingen" width="320" height="180" frameborder="0" title="Harlingen weather" loading="lazy"></iframe>Frequently asked questions
Will it rain in Harlingen tomorrow?
Rain is unlikely in Harlingen tomorrow; the precipitation chance stays around 0%.
What is the temperature in Harlingen today?
Today Harlingen sees thunderstorm with a high of 34 °C and a low of 26 °C.
How hot will it be in Harlingen tomorrow?
Tomorrow's high in Harlingen is forecast at 35 °C with thunderstorm.
Is it windy in Harlingen today?
Yes, yes — gusts up to 45 km/h today.
What is the UV index in Harlingen today?
The UV index peaks at 8 today, which is very high.
What time is sunrise and sunset in Harlingen today?
The sun rises at 06:39 and sets at 20:25 local time.
Is the air quality in Harlingen good today?
Air quality is good right now, with a US AQI reading of 40.