Peru AQI Analytics

OpenAQ-derived PM2.5 and PM10 history for 14 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 Huaycan, with an EPA AQI average of 152 and PM2.5 around 73.3 ug/m3. Its worst month is June.

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 16.8 ug/m3 · PM10 31.4 ug/m3

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

14 eligible cities

Compare yearly air-quality direction, best years, worst years, and trend deltas.

13 eligible cities

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

14 eligible cities

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

13 eligible cities

City	Avg AQI	PM2.5	Worst month	Trend	Coverage
Huaycan Lima, Peru	152	73.3 ug/m3	June	n/a	362 days · 6 locations
Lima Lima, Peru	90	29.6 ug/m3	August	n/a	367 days · 11 locations
Ascope La Libertad, Peru	67	17.7 ug/m3	June	n/a	280 days · 2 locations
Pisco Ica, Peru	62	17.0 ug/m3	September	n/a	253 days · 4 locations
Arequipa Arequipa, Peru	57	12.8 ug/m3	March	n/a	280 days · 2 locations
Cerro de Pasco Pasco, Peru	56	14.3 ug/m3	September	n/a	280 days · 2 locations
Chimbote Ancash, Peru	51	11.5 ug/m3	November	n/a	280 days · 2 locations
Santo Tomás Cusco, Peru	46	10.1 ug/m3	August	n/a	282 days · 6 locations
Paita Piura, Peru	43	9.0 ug/m3	July	n/a	280 days · 1 locations
Huari Ancash, Peru	42	10.1 ug/m3	September	n/a	280 days · 2 locations
Huánuco Huánuco, Peru	29	8.1 ug/m3	June	n/a	78 days · 1 locations
Ilo Moquegua, Peru	19	n/a ug/m3	April	n/a	244 days · 3 locations
Moquegua Moquegua, Peru	15	2.8 ug/m3	December	n/a	279 days · 1 locations
Sullana Piura, Peru	14	2.7 ug/m3	October	n/a	280 days · 1 locations