Air Quality in Alajuela, Costa Rica
Rain
21.1°C · 91.2% humidity
21.1°
Feels 21.1°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Alajuela's air quality — share it
AQI Forecast
27
3pm
25
25
25
6pm
34
54
54
9pm
54
54
54
12am
34
27
34
3am
34
34
27
6am
34
25
25
9am
25
25
25
12pm
25
25
Air Quality Index Trend
43h · 1 stnAlajuela's air quality is influenced by vehicle emissions, industrial activity, and seasonal agricultural burning. Pollution patterns vary with dry and wet seasons.
91.2%
Humidity
7.6 km/h
Wind NNW
1010.5 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.88 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Alajuela?
Temperature & Precipitation
PM2.5 Trend
43h · 1 stationPM2.55.88 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
Station readings (1 station within 25 km)
5.88
Median
5.88
Average
5.88
Low
5.88
High
PM2.5 µg/m³ · Model: 9.75 · Bias: +3.9
What is the 7-day forecast for Alajuela?
05-30
29.4° 18.4°
6.62 mm
05-31
26.6° 18.0°
6.0 mm
06-01
23.8° 19.5°
4.56 mm
06-02
25.4° 18.6°
33.69 mm
06-03
21.4° 18.1°
5.75 mm
06-04
25.3° 18.6°
7.81 mm
06-05
25.0° 19.0°
25.12 mm
Both models agree
Avg diff: 1.0°C
Where are air quality stations near Alajuela?
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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 2026-05-30T00:07 UTC.