Stay updated with real-time air quality in Smithtown, New York featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
33
Good
Smithtown, New York
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
5.80 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
24.54 μg/m³
0
55
155
255
425
605+
27.37 ppb
0
55
71
86
201
201+
0.15 ppb
0
36
76
186
605
1005+
1.63 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Smithtown, New York
Smithtown, New York
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AQI 52
Moderate
9.62μg/m³
PM2.5
44.74μg/m³
PM10
46.19ppb
O3
1.07ppb
SO2
7.93ppb
NO2
0.28ppm
CO
AQI 67
Moderate
8.82μg/m³
PM2.5
38.91μg/m³
PM10
60.15ppb
O3
1.25ppb
SO2
13.07ppb
NO2
0.34ppm
CO
AQI 49
Good
9.13μg/m³
PM2.5
41.52μg/m³
PM10
46.38ppb
O3
1.07ppb
SO2
8.03ppb
NO2
0.29ppm
CO
AQI 61
Moderate
11.91μg/m³
PM2.5
54.42μg/m³
PM10
58.17ppb
O3
1.19ppb
SO2
13.19ppb
NO2
0.34ppm
CO
AQI 54
Moderate
10.75μg/m³
PM2.5
52.10μg/m³
PM10
47.90ppb
O3
1.20ppb
SO2
12.26ppb
NO2
0.34ppm
CO
AQI 54
Moderate
10.81μg/m³
PM2.5
52.62μg/m³
PM10
48.00ppb
O3
1.23ppb
SO2
13.00ppb
NO2
0.34ppm
CO
Air quality data and pollutant measurements for New York, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Smithtown, New York is updated every hour.
The worst air quality in Smithtown, New York in the last 24 hours was observed at 12:00:00 on 2025-07-30.
In the last 24 hrs, the best air quality in Smithtown, New York was observed at 06:00:00 on 2025-07-30.
The current air quality in Smithtown, New York is 74, categorized as Moderate based on real-time data.
The most common pollutant in Smithtown, New York is O3.
If the air quality in Smithtown, New York is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Smithtown, New York is 11.016 μg/m3.
The current PM10 concentration at Smithtown, New York is 55.015 μg/m3.
The current carbon monoxide (CO) concentration at Smithtown, New York is 0.305 ppm.
The current sulfur dioxide (SO2) concentration at Smithtown, New York is 1.464 ppb.
The current ozone (O3) concentration at Smithtown, New York is 61.856 ppm.
The current nitrogen dioxide (NO2) concentration at Smithtown, New York is 12.265 ppb.
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