What is the air quality
Recently, air quality has become one of the hot topics of global concern. As climate change and industrial development intensify, air quality issues have become increasingly prominent. The following are air quality-related topics and structured data that have been hotly discussed across the Internet in the past 10 days to help you fully understand the current air conditions.
1. Air Quality Index (AQI) ranking of major global cities
| City | nation | AQI index | primary pollutants | Data date |
|---|---|---|---|---|
| Beijing | China | 156 | PM2.5 | 2023-11-15 |
| New Delhi | India | 423 | PM2.5 | 2023-11-16 |
| Los Angeles | USA | 78 | ozone | 2023-11-14 |
| Paris | France | 65 | NO2 | 2023-11-15 |
| Tokyo | Japan | 42 | PM10 | 2023-11-16 |
2. Air quality grade classification standards
| AQI range | air quality level | health effects | Recommended actions |
|---|---|---|---|
| 0-50 | excellent | No impact | normal activities |
| 51-100 | good | Very few sensitive groups are affected | A very small number of sensitive people should reduce prolonged outdoor activities |
| 101-150 | light pollution | Susceptible people have mildly worsened symptoms | Children, the elderly and patients with heart disease and respiratory diseases should reduce prolonged outdoor activities |
| 151-200 | moderate pollution | Further aggravating the symptoms of susceptible people | The general population should moderately reduce outdoor activities |
| 201-300 | heavy pollution | Symptoms increased significantly in patients with heart and lung disease | Children, the elderly and patients with heart disease and lung disease should stop outdoor activities |
| 300+ | serious pollution | Reduced exercise tolerance in healthy people | Reduce outdoor activities for all groups of people |
3. Recent hot air quality events
1.New Delhi smog crisis in India: Since the beginning of November, New Delhi has suffered from severe air pollution, with the AQI exceeding the 400 mark many times. The government announced the suspension of schools and construction work, and considered implementing an "odd and even number" traffic restriction policy.
2.Heating season begins in northern China: As the northern region enters the heating season, haze weather occurs in many places. The Ministry of Ecology and Environment issued an early warning, requiring all localities to strengthen pollution prevention and control measures.
3.European air quality improves: Thanks to clean energy policies, air quality in many European cities continues to improve. The AQI of cities such as Paris and Berlin remains below 100.
4.Impact of wildfires in the United States: California wildfires have caused the air quality to deteriorate in some areas, with the AQI briefly rising above 200 in some areas.
4. Suggestions for improving air quality
1.personal protection: When the air quality is poor, try to reduce outdoor activities and wear N95 masks when going out. Use an air purifier indoors.
2.Green travel: Choose more public transportation, walking or cycling, and reduce the use of private cars.
3.Energy saving and emission reduction: Save electricity, choose energy-saving products, and reduce energy consumption.
4.indoor air management: Regularly open windows for ventilation to maintain indoor air circulation, and plant green plants to improve indoor air quality.
5. Air quality forecast for the next week
| area | November 17 | November 18 | November 19 | November 20 | November 21 |
|---|---|---|---|---|---|
| North China | moderate pollution | light pollution | good | light pollution | moderate pollution |
| East China | good | good | excellent | good | good |
| South China | excellent | excellent | excellent | excellent | excellent |
| southwest region | light pollution | light pollution | good | light pollution | light pollution |
Air quality is related to everyone's health and quality of life. By understanding current air quality conditions and taking appropriate protective measures, we can better protect the health of ourselves and our families. At the same time, everyone should contribute to improving air quality and jointly create a cleaner living environment.
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