Stay updated with real-time air quality in Hudson, New Hampshire 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)
21
Good
Hudson, New Hampshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
0.56 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
2.11 μg/m³
0
55
155
255
425
605+
22.65 ppb
0
55
71
86
201
201+
0.86 ppb
0
36
76
186
605
1005+
2.58 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Hudson, New Hampshire
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AQI 21
Good
0.55μg/m³
PM2.5
2.00μg/m³
PM10
22.57ppb
O3
0.86ppb
SO2
2.60ppb
NO2
0.16ppm
CO
AQI 21
Good
0.70μg/m³
PM2.5
3.07μg/m³
PM10
22.87ppb
O3
0.85ppb
SO2
2.76ppb
NO2
0.17ppm
CO
AQI 21
Good
0.59μg/m³
PM2.5
3.98μg/m³
PM10
23.28ppb
O3
0.87ppb
SO2
3.36ppb
NO2
0.16ppm
CO
AQI 22
Good
0.42μg/m³
PM2.5
1.13μg/m³
PM10
23.91ppb
O3
0.99ppb
SO2
1.05ppb
NO2
0.11ppm
CO
AQI 21
Good
0.48μg/m³
PM2.5
1.62μg/m³
PM10
23.02ppb
O3
0.83ppb
SO2
2.15ppb
NO2
0.15ppm
CO
AQI 21
Good
0.54μg/m³
PM2.5
2.01μg/m³
PM10
23.40ppb
O3
0.92ppb
SO2
1.94ppb
NO2
0.14ppm
CO
Air quality and pollutant data for New Hampshire, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Hudson, New Hampshire is updated every hour for accuracy.
In the past 24 hours, the air quality in Hudson, New Hampshire was at its worst at 08:00:00 on 2026-09-28.
In the last 24 hours, the best air quality in Hudson, New Hampshire was observed at 09:00:00 on 2026-09-28.
As of now, the AQI in Hudson, New Hampshire is 21, indicating Good conditions.
Hudson, New Hampshire air has the highest levels of O3.
Poor air quality in Hudson, New Hampshire means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Hudson, New Hampshire are currently 0.562 μg/m3.
The PM10 concentration in Hudson, New Hampshire is 2.114 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Hudson, New Hampshire is 0.157 ppm.
Currently, Hudson, New Hampshire has a sulfur dioxide (SO2) concentration of 0.865 ppb.
The current ozone (O3) level in Hudson, New Hampshire at the moment is 22.649 ppm.
Nitrogen dioxide (NO2) level in Hudson, New Hampshire at the moment is 2.576 ppb.
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