Air Quality in Alajuela, CR

Cloudy
20.6°C · 78.3% humidity
20.6°
Feels 20.6°
27
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
27 7pm
27
27
27 10pm
27
27
27 1am
27
39
39 4am
27
27
27 7am
27
27
14 10am
14
27
27 1pm
27
27
14 4pm
14
14
Station readings
27
27
CAMS model adj +2
25
25
25
25
25
25
25
25
37
37
25
25
25
25
25
12
12
25
25
25
25
12
12
12
AD 728×90

PM2.5 Trend (24h)

22h · 1 station
78.3%
Humidity
36.6 km/h
Wind NE
1009.8 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Alajuela?

Temperature & Precipitation

PM2.56.46 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (1 station within 25 km)
6.46
Median
6.46
Average
6.46
Low
6.46
High
PM2.5 µg/m³ · Model: 4.4 · Bias: -2.1

What is the 7-day forecast for Alajuela?

04-09
29.6° 17.7°
0.38 mm
04-10
24.1° 19.1°
0.38 mm
04-11
23.0° 19.2°
1.44 mm
04-12
22.4° 18.2°
6.94 mm
04-13
28.7° 18.0°
7.19 mm
04-14
32.0° 17.0°
0.25 mm
04-15
31.5° 16.1°
0.88 mm
Both models agree Avg diff: 1.5°C

Where are air quality stations near Alajuela?

27
NASA GSFC Rutgers Calib. N13
20.7 km PM2.5: 6.5 µg/m³

What cities are near Alajuela?

27 Mercedes Norte 27 San Francisco 27 Heredia 27 San Pablo 27 San Rafael 27 Colima 27 San Juan 27 San José 27 San Felipe 27 Calle Blancos

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T22:17 UTC.