The State of Mexico government lifted Phase I of its Atmospheric Environmental Contingency this friday, December 26, ending the “Double Not Circulating Today” restrictions. But don’t breathe easy just yet-air quality concerns remain.
Air Quality Alert Continues for Toluca Valley and Santiago Tianguistenco
Despite improvements, an Alert phase remains active for PM2.5 particles in key metropolitan areas.
- The Phase I contingency,triggered by holiday festivities,has been suspended.
- An Alert Phase for PM2.5 particles persists in the Toluca Valley (ZMVT) and Santiago Tianguistenco (ZMST).
- Authorities recorded peak PM2.5 concentrations of 42 and 37 micrograms per cubic metre at monitoring stations in Xonacatlán and Calimaya, respectively, at 10:00 a.m.
- The Alert phase encourages preventative measures like staying indoors to minimize respiratory discomfort.
The decision to deactivate the initial contingency phase came after air quality began to improve, according to state authorities. At 10:00 a.m. on December 26, monitoring stations in Xonacatlán and Calimaya registered maximum concentrations of 42 and 37 micrograms per cubic meter of PM2.5 particles, respectively. These levels, while still elevated, signaled a positive trend.
The initial environmental contingency was activated due to elevated pollutant levels stemming from December holiday activities, especially bonfires and the widespread use of fireworks during the nights of December 24 and 25. These emissions, combined with thermal inversion and unfavorable weather conditions, hindered the dispersal of contaminants.
Understanding the Alert Phase
The Secretariat of the Habitat and Lasting Growth clarified that the Alert Phase is primarily informative. Its purpose is to keep the public aware of current air quality conditions and to encourage preventative actions. these include remaining indoors with doors and windows closed to reduce irritation to the eyes, throat, and nose.
PM2.5 particles-tiny pollutants-pose the greatest health risk. They can penetrate deep into the lungs and bloodstream,exacerbating respiratory and cardiovascular issues.
What should you do if air quality is poor? If you experience persistent symptoms,authorities recommend consulting a physician.
Importantly, the vehicle restriction program, “today It doesn’t Circulate,” is operating normally during the Alert Phase. Authorities are urging residents to proactively reduce polluting emissions by avoiding the burning of fireworks, firewood, bonfires, and tires.They also recommend limiting automobile use and implementing emission control measures in industries, businesses, and homes.
The Secretariat of the Environment and Sustainable Development continues to closely monitor air quality in both metropolitan areas and encourages citizens to stay informed about its ongoing evolution.
