Recognizing Dew as an Indicator and an Improver of Near-Surface Air Quality

Table 1

Average meteorological parameters and particle concentrations during normal, fog, and haze conditions during the study period.

	Normal	Fog	Haze
AQI	87	71	272
PM2.5 (μg/m^3)	32	33	230
PM10 (μg/m^3)	68	52	292
RH (%)	75.27	92.12	81.25
Wind speed (m/s)	0.66	0.12	0.24
Visibility (km)	12.48	5.36	3.58
Pressure (kPa)	101.5	101.3	101.1
Dew point (°C)	19.0	18.5	4.1
Temperature (°C)	17.52	15.26	6.28

Note. AQI: Air Quality Index; PM_2.5: particulate matter < 2.5 µm in diameter; PM₁₀: particulate matter 2.5–10 µm in diameter.