Estonia AQI Analytics

OpenAQ-derived PM2.5 and PM10 history for 7 cities, mapped to AQI Now city pages and normalized to the US EPA AQI scale.

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City

The highest average AQI in this pilot slice is Kohtla-Järve, with an EPA AQI average of 24 and PM2.5 around 4.2 ug/m3. Its worst month is September.

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

Country average

US EPA scale

PM2.5 3.6 ug/m3 · PM10 12.8 ug/m3

Rank cities side by side using OpenAQ PM2.5 and PM10 history normalized to US EPA AQI.

7 eligible cities

Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.

7 eligible cities

Translate PM2.5 exposure into WHO exceedance and a simple cigarette-equivalent indicator.

6 eligible cities

City	Avg AQI	PM2.5	Worst month	Trend	Coverage
Kohtla-Järve Kohtla-Järve, Estonia	24	4.2 ug/m3	September	n/a	254 days · 1 locations
Tartu Tartu, Estonia	20	4.0 ug/m3	March	n/a	252 days · 1 locations
Rakvere Rakvere, Estonia	19	3.6 ug/m3	March	n/a	228 days · 1 locations
Narva Narva, Estonia	19	3.6 ug/m3	March	n/a	253 days · 1 locations
Jõgeva Jõgeva, Estonia	17	3.2 ug/m3	March	n/a	216 days · 1 locations
Tallinn Tallinn, Estonia	17	3.2 ug/m3	May	n/a	269 days · 2 locations
Tallinn Harju County, Estonia	14	n/a ug/m3	March	n/a	257 days · 1 locations