Coyhaique vs Nacimiento AQI Comparison

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

Lower average AQI: Nacimiento (4-pt gap)PM2.5: Coyhaique 51.5 ug/m3 · Nacimiento 46.5 ug/m3

Source: OpenAQ local exports mapped to AQI Now cities; city summaries cover 2024-01-01–2025-01-01 and 2024-01-01–2025-01-01.

Compare two cities

City A

City B

Coyhaique vs Nacimiento

Coyhaique

Aysén, Chile

117

PM2.5: 51.5 ug/m3
PM10: 62.6 ug/m3
Worst month: May
Trend: n/a

EPA category: Unhealthy for Sensitive Groups

Nacimiento

Biobío, Chile

113

PM2.5: 46.5 ug/m3
PM10: 56.9 ug/m3
Worst month: May
Trend: n/a

EPA category: Unhealthy for Sensitive Groups

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

Yearly EPA AQI trend

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec

Coyhaique

130

228

188

161

154

Nacimiento

113

181

142

166

154

104

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.