Kohtla-Järve vs Tartu AQI Comparison

Side-by-side OpenAQ-derived air quality comparison for Kohtla-Järve and Tartu. Values use mapped daily PM2.5 and PM10 observations normalized to US EPA AQI.

Lower average AQI: Tartu (4-pt gap)PM2.5: Kohtla-Järve 4.2 ug/m3 · Tartu 4.0 ug/m3

Source: OpenAQ local exports mapped to AQI Now cities; city summaries cover 2024-03-25–2024-12-31 and 2024-03-25–2024-12-31.

Compare two cities

City A

City B

Kohtla-Järve vs Tartu

Kohtla-Järve

Kohtla-Järve, Estonia

PM2.5: 4.2 ug/m3
PM10: 17.3 ug/m3
Worst month: September
Trend: n/a

EPA category: Good

Tartu

Tartu, Estonia

PM2.5: 4.0 ug/m3
PM10: 12.0 ug/m3
Worst month: March
Trend: n/a

EPA category: Good

Lower average AQI in this selected period: Tartu. Values are historical OpenAQ-derived city summaries, not live readings.

Yearly EPA AQI trend

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec

Kohtla-Järve

Tartu

What this comparison measures

Average EPA AQI — city-level daily AQI values averaged across the OpenAQ coverage window.
PM2.5 and PM10 — mapped monitor concentrations aggregated to daily city averages.
Seasonality — worst and cleanest months from the monthly city rollups.
Trend — difference between the earliest and latest yearly AQI average in this build.