Cochrane vs Osorno AQI Comparison

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

Lower average AQI: Cochrane (0-pt gap)PM2.5: Cochrane 45.0 ug/m3 · Osorno 43.0 ug/m3

Source: OpenAQ local exports mapped to AQI Now cities; city summaries cover 2024-01-19–2024-12-31 and 2024-01-01–2025-01-01.

Compare two cities

City A

City B

Cochrane vs Osorno

Cochrane

Aysén, Chile

106

PM2.5: 45.0 ug/m3
PM10: n/a ug/m3
Worst month: May
Trend: n/a

EPA category: Unhealthy for Sensitive Groups

Osorno

Los Lagos, Chile

106

PM2.5: 43.0 ug/m3
PM10: 52.1 ug/m3
Worst month: May
Trend: n/a

EPA category: Unhealthy for Sensitive Groups

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

Yearly EPA AQI trend

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec

Cochrane

142

195

158

Osorno

107

187

130

163

155

122

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.