Air Quality in Alajuela, Costa Rica
Rain
24.6°C · 75.2% humidity
24.6°
Feels 24.6°
21
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Alajuela's air quality — share it
AQI Forecast
24
9am
24
25
21
12pm
24
24
24
3pm
24
24
25
6pm
34
34
34
9pm
34
54
54
12am
54
54
54
3am
54
54
34
6am
34
27
Air Quality Index Trend
46h · 1 stnAlajuela's air quality is influenced by vehicle emissions, industrial activity, and seasonal agricultural burning. Pollution patterns vary with dry and wet seasons.
75.2%
Humidity
28.4 km/h
Wind WSW
1012.0 hPa
Pressure
6.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.09 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Alajuela?
Temperature & Precipitation
PM2.5 Trend
46h · 1 stationPM2.55.09 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX6.9
High
Station readings (1 station within 25 km)
5.09
Median
5.09
Average
5.09
Low
5.09
High
PM2.5 µg/m³ · Model: 6.0 · Bias: +0.9
What is the 7-day forecast for Alajuela?
06-09
24.6° 18.2°
7.19 mm
06-10
25.4° 18.7°
49.19 mm
06-11
23.7° 18.4°
24.56 mm
06-12
24.5° 17.9°
19.0 mm
06-13
21.4° 18.2°
19.56 mm
06-14
26.5° 18.5°
20.19 mm
06-15
27.7° 17.9°
7.94 mm
Both models agree
Avg diff: 1.1°C
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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 2026-06-09T18:39 UTC.