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Latvia AQI Analytics

OpenAQ-derived PM2.5 and PM10 history for 4 cities, mapped to AQI Now city pages and normalized to the US EPA AQI scale.

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Cities
4

with OpenAQ history

Locations
13

mapped monitors

Daily rows
1,324

2024-01-01 to 2024-12-31

Avg EPA AQI
43

9.1 ug/m3 PM2.5

Current data story

The highest average AQI in this pilot slice is Liepāja, with an EPA AQI average of 47 and PM2.5 around 9.6 ug/m3. Its worst month is March.

Source: OpenAQ local parquet plus raw CSV coordinate recovery. Build 2026-05-12T00:27:56.105574+00:00.

Country average
43
US EPA scale
PM2.5 9.1 ug/m3 · PM10 18.2 ug/m3

Analytics tools

Cities ranked by average AQI

CityAvg AQIPM2.5Worst monthTrendCoverage
Liepāja
Liepāja, Latvia
479.6 ug/m3Marchn/a344 days · 5 locations
Rēzekne
Rēzekne, Latvia
4710.2 ug/m3Januaryn/a316 days · 4 locations
Riga
Riga, Latvia
418.6 ug/m3Januaryn/a344 days · 3 locations
Ventspils
Ventspils, Latvia
397.9 ug/m3Marchn/a320 days · 1 locations

Browse Latvia city AQI analytics