Costa Rica: Air Quality Today — AQI Index, Smog, Pollen, UV and City Forecasts

Locations

San José

5.7 PM2.5 µg/m³

Good

PM10 6 NO₂ 20 O₃ 26

Current data Wednesday, August 26, 2026 at 7:00 PM

PM2,5 6 (Good)

PM10 6 (Good)

O3 26 (Good)

NO2 20 (Good)

SO2 4 (Good)

CO 434 (Good)

index	2026-08-26	2026-08-25	2026-08-24	2026-08-23	2026-08-22	2026-08-21	2026-08-20	2026-08-19
PM2,5	5 Good	6 Good	8 Good	4 Good	4 Good	6 Good	5 Good	5 Good
PM10	6 Good	6 Good	9 Good	4 Good	4 Good	7 Good	5 Good	7 Good
O3	39 Good	36 Good	39 Good	34 Good	44 Good	44 Good	37 Good	36 Good
NO2	11 Good	10 Good	10 Good	8 Good	6 Good	10 Good	9 Good	10 Good
SO2	3 Good	4 Good	4 Good	3 Good	3 Good	3 Good	3 Good	3 Good
CO	275 Good	243 Good	212 Good	181 Good	214 Good	238 Good	294 Good	292 Good

data source »

Quality of life in Costa Rica

Green and Parks in the City

Costa Rica 61%

Nicaragua: 43% Panama: 51% Honduras: 41% El Salvador: 37% Guatemala: 45%

Pleasure of spending time in the city

Costa Rica 62%

Nicaragua: 52% Panama: 55% Honduras: 41% El Salvador: 40% Guatemala: 45%

Air Pollution

Costa Rica 36%

Nicaragua: 39% Panama: 42% Honduras: 65% El Salvador: 65% Guatemala: 64%

Garbage Disposal

Costa Rica 50%

Nicaragua: 30% Panama: 33% Honduras: 22% El Salvador: 33% Guatemala: 30%

Availability and quality of drinking water

Costa Rica 83%

Nicaragua: 49% Panama: 66% Honduras: 44% El Salvador: 41% Guatemala: 39%

Cleanliness and tidiness

Costa Rica 46%

Nicaragua: 29% Panama: 37% Honduras: 20% El Salvador: 29% Guatemala: 34%

Noise and Light pollution

Costa Rica 47%

Nicaragua: 63% Panama: 60% Honduras: 49% El Salvador: 57% Guatemala: 56%

Water Pollution

Costa Rica 44%

Nicaragua: 73% Panama: 57% Honduras: 72% El Salvador: 68% Guatemala: 71%

Source: Numbeo

* Pollution data source: https://openaq.org (StateAir_SanJose, AirNow) The data is licensed under CC-By 4.0

Frequently asked questions

Is the air safe to breathe in Costa Rica today?

The current average PM2.5 across Costa Rica is about 6 µg/m³, rated “Good”. Air quality is good — outdoor activities are fine for everyone.

What is the current PM2.5 level in Costa Rica?

Right now PM2.5 in Costa Rica averages about 6 µg/m³ (“Good”). PM2.5 are fine particles small enough to reach the lungs and bloodstream.

How is air quality measured?

Air quality here is based on PM2.5 — the concentration of fine particulate matter in µg/m³. Lower values mean cleaner air. Data is updated daily from Open-Meteo.

☀️ UV Index · 16-day Forecast — Costa Rica

The UV index in Costa Rica today is 9.3 (very high) — unprotected fair skin can burn in about 20 minutes.

🌦️ Weather · 16-day Forecast — Costa Rica

16-day weather forecast for Costa Rica: today around 24°C (rain), lows near 17°C. Daily temperature and conditions, updated every day.