Phân tích chất lượng không khí lịch sử Hejian, Hebei, China

30°C24/36°C

30°C26/34°C

30°C26/35°C

31°C27/37°C

32°C27/38°C

32°C27/38°C

33°C28/39°C

30°C25/35°C

29°C24/35°C

28°C23/33°C

30°C25/36°C

31°C25/37°C

31°C26/39°C

28°C26/31°C

30°C25/37°C

32°C26/40°C

32°C27/38°C

25°C21/27°C

26°C20/33°C

28°C22/35°C

29°C23/35°C

28°C21/36°C

26°C21/32°C

29°C23/36°C

26°C23/30°C

23°C22/25°C

26°C22/30°C

28°C23/33°C

28°C25/34°C

26°C23/30°C

--°C/°C