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aire región Concón-Quintero-Puchuncaví
import openaq
import pandas as pd
api = openaq.OpenAQ() # fuente: www.openaq.org
cdf = api.cities(country='CL', df=True)
cdf = cdf[cdf.city.isin(['Quintero','Concón','Puchuncaví'])]
xdf = pd.concat([api.measurements(city=city, df=True, limit=1000)
for city in cdf.city])
xdf.index.name='fecha'
xdf = xdf.rename(columns={'coordinates.latitude': 'lat',
'coordinates.longitude': 'lon'})
import seaborn as sns
import matplotlib.pyplot as plt
sns.set_theme(style="darkgrid")
fig, ax = plt.subplots(1, figsize=(30,10))
con=xdf[xdf.parameter=='so2'].reset_index()
con['location'] = con.location+':'+con.city
con = con[con['fecha']>'2022-06-03']
md = con['fecha'].median();
maxima=con[con.value==con.value.max()]
tag='%s:%.1f ' %(maxima['location'].values[0],maxima['value'].values)
sns.lineplot(data=con, x='fecha', y='value', hue='location');
plt.axhline(y=150, color='r', linestyle='-', linewidth=5); #24h
plt.axhline(y=350, color='orange', linestyle='-', linewidth=5); # 1h
plt.text(md, 150+10, 'norma 24h (Chile)', color='blue', size=18, weight='bold');
plt.text(md, 350+10, 'norma 1h (Chile)', color='purple', size=18, weight='bold');
plt.text(maxima['fecha'], maxima['value'], f"{tag}", size=18, color='r', weight='bold')
plt.title('Evolución reciente SO2 Concon-Quintero-Puchuncaví [µg/m3] (Fuente: OpenAQ + Quant.cl)', size=24);
plt.legend(loc=1,prop={'size': 18});
@sergiolucero
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sergiolucero commented Jun 9, 2022

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