Stay updated with real-time air quality in Halfmoon, 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)
18
Good
Halfmoon, New York
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.58 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.03 μg/m³
0
55
155
255
425
605+
18.62 ppb
0
55
71
86
201
201+
0.29 ppb
0
36
76
186
605
1005+
3.19 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Halfmoon, New York
Halfmoon, New York
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AQI 18
Good
2.75μg/m³
PM2.5
10.55μg/m³
PM10
19.49ppb
O3
0.29ppb
SO2
3.98ppb
NO2
0.20ppm
CO
AQI 19
Good
2.20μg/m³
PM2.5
17.76μg/m³
PM10
20.13ppb
O3
0.29ppb
SO2
3.19ppb
NO2
0.20ppm
CO
AQI 19
Good
2.63μg/m³
PM2.5
17.02μg/m³
PM10
19.77ppb
O3
0.29ppb
SO2
3.26ppb
NO2
0.20ppm
CO
AQI 19
Good
2.97μg/m³
PM2.5
13.07μg/m³
PM10
20.14ppb
O3
0.29ppb
SO2
4.13ppb
NO2
0.20ppm
CO
AQI 19
Good
3.02μg/m³
PM2.5
12.81μg/m³
PM10
20.66ppb
O3
0.29ppb
SO2
4.06ppb
NO2
0.20ppm
CO
AQI 20
Good
2.88μg/m³
PM2.5
17.78μg/m³
PM10
22.22ppb
O3
0.30ppb
SO2
3.24ppb
NO2
0.24ppm
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 Halfmoon, New York is updated every hour.
The worst air quality in Halfmoon, New York in the last 24 hours was observed at 09:00:00 on 2026-11-12.
In the last 24 hrs, the best air quality in Halfmoon, New York was observed at 10:00:00 on 2026-11-12.
The current air quality in Halfmoon, New York is 18, categorized as Good based on real-time data.
The most common pollutant in Halfmoon, New York is O3.
If the air quality in Halfmoon, New York is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Halfmoon, New York is 2.582 μg/m3.
The current PM10 concentration at Halfmoon, New York is 11.033 μg/m3.
The current carbon monoxide (CO) concentration at Halfmoon, New York is 0.201 ppm.
The current sulfur dioxide (SO2) concentration at Halfmoon, New York is 0.289 ppb.
The current ozone (O3) concentration at Halfmoon, New York is 18.62 ppm.
The current nitrogen dioxide (NO2) concentration at Halfmoon, New York is 3.188 ppb.
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