5 months ago
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On Monday evening, Hyderabad’s aerial prime numbers told a puzzling story. Between 6 and 6.30 p.m., the Central Pollution Control Board (CPCB) information showed the city’s mean aerial prime scale (AQI) astatine 143, portion the highest speechmaking connected the CPCB monitoring instrumentality astatine ICRISAT, Patancheru was lone 138 for the aforesaid clip period.
This has near 1 wondering however the highest worth could beryllium little than the mean value, and raises larger questions: however polluted is Hyderabad’s air, really? And are we relying connected the close information to recognize it?
CPCB figures, updated successful wide clip blocks, often lag down third-party platforms that amusement minute-by-minute changes. Around the aforesaid clip connected Monday, the app ‘aqi.in’ reported Hyderabad’s mean AQI astatine 214 — flagged arsenic ‘unhealthy’, compared to the CPCB’s ‘moderate’ rating. While the authoritative fig hardly shifted implicit the adjacent hour, the aqi.in readings fluctuated widely, climbing to 260 by 7 p.m.
Variations astatine the section level are adjacent wide apart. As per the 3rd enactment app, Narsingi recorded the highest AQI astir 6.30 p.m, astatine 436, which is categorised arsenic ‘hazardous’ adjacent by Indian standards. At Kokapet nearby, the AQI was noted arsenic 227, which roseate beyond 300 successful the adjacent 1 hour, portion CPCB values hovered astir 89-90 for the aforesaid location. Narsingi and Kokapet basal retired arsenic hotspots, driven by aggravated operation enactment that sends particulate into the air, compounded by vehicular emissions during highest postulation hours.
Around 6.30 p.m., the third-party app showed AQI levels supra 300 astatine 4 locations: Tirumala Nagar, B.N. Reddy Nagar, Kukatpally and Ameenpur. On the aforesaid day, the app recorded Hyderabad’s highest regular mean astatine 314 astatine 7 a.m., portion CPCB’s highest speechmaking astatine that hr was conscionable 121 astatine ICRISAT.
Compared to 2 years ago, the mean aerial contamination successful December has risen by 64% successful the city, from 109 successful 2023 to 179 till now. In November, for which a full month’s information is available, the emergence is adjacent to 74%, from 88 successful 2023 to 153 successful 2025.
PM10 and PM2.5 pb the pollutants successful the aerial successful the metropolis emanating from dust, vehicular and concern substance combustion, and garbage burning arsenic the large contributory factors.
Officials from the Telangana Pollution Control Board said astir of the 3rd enactment apps followed the US Environmental Protection Agency’s standards, which are much stringent, alternatively of the nationalist ambient aerial prime standards, and since the AQI is simply a calculation based connected the standards, determination is simply a quality successful the AQIs calculated by these agencies erstwhile compared with the standards followed by CPCB.
The aerial prime scale of Hyderabad is calculated based connected information from the respective continuous ambient aerial prime monitoring stations. As the aerial is highly dynamic, the sampling astatine antithetic locations volition person to beryllium averaged to get a typical AQI for the city, they said, successful effect to the query connected the crushed down the highest AQI being little than the city’s average.
