What is the air quality in Usulután today?

The current Air Quality Index (AQI) in Usulután is 59 (Moderate). PM2.5 concentration is 15.65 µg/m³.

What is the temperature in Usulután right now?

The current temperature in Usulután is 27.0°C (feels like 27.0°C). Humidity is 76.6% and wind speed is 32.9 km/h.

Air Quality in Usulután, El Salvador

Drizzle

27.0°C · 76.6% humidity

27.0°

Feels 27.0°

Moderate

Unusually sensitive people should consider reducing prolonged outdoor exertion.

1 station

Nearby Monitoring Stations

AQI Forecast

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Station readings

Air Quality Index Trend

47h · 1 stn

View full history →

Usulután's air quality is influenced by vehicle emissions, industrial activity, and seasonal agricultural burning. Pollution patterns vary with dry and wet seasons. Current PM2.5 concentration in Usulután is 1.0× the WHO 24-hour guideline of 15 µg/m³.

76.6%

Humidity

32.9 km/h

Wind WSW

1008.8 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

15.65 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Usulután?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station

PM2.515.65 µg/m³ ✓ WHO

Moderate

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (1 station within 25 km)

15.65

Median

15.65

Average

15.65

Low

15.65

High

PM2.5 µg/m³ · Model: 6.5 · Bias: -9.1

What is the 7-day forecast for Usulután?

10-21

27.0° 23.7°

12.5 mm

10-22

28.9° 24.0°

13.56 mm

10-23

28.6° 24.2°

6.5 mm

10-24

28.4° 24.4°

9.88 mm

10-25

28.3° 24.4°

8.69 mm

10-26

27.8° 24.3°

12.5 mm

10-27

29.3° 22.3°

2.87 mm

Both models agree Avg diff: 0.9°C

Where are air quality stations near Usulután?

el-salvador-usulután-2a-calle-poniente

0.5 km 31.1°C 73.5% RH PM2.5: 12.8 µg/m³

What cities are near Usulután?

61 San Rafael Oriente 59 Puerto El Triunfo 59 Santiago de María 69 San Miguel 12 San Vicente 12 Zacatecoluca 69 San Francisco 18 Sensuntepeque 36 La Unión 13 Cojutepeque

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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-21T16:13 UTC.