Stay updated with real-time air quality in Rochester, 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)
22
Good
Rochester, New Hampshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.54 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.18 μg/m³
0
55
155
255
425
605+
22.27 ppb
0
55
71
86
201
201+
1.10 ppb
0
36
76
186
605
1005+
2.89 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Rochester, New Hampshire
Scroll To Air Quality MapLoading...
AQI 22
Good
3.54μg/m³
PM2.5
9.29μg/m³
PM10
21.74ppb
O3
1.16ppb
SO2
2.89ppb
NO2
0.15ppm
CO
AQI 22
Good
3.55μg/m³
PM2.5
9.11μg/m³
PM10
22.61ppb
O3
1.17ppb
SO2
2.88ppb
NO2
0.15ppm
CO
AQI 22
Good
3.54μg/m³
PM2.5
10.14μg/m³
PM10
24.21ppb
O3
1.17ppb
SO2
2.88ppb
NO2
0.15ppm
CO
AQI 22
Good
3.51μg/m³
PM2.5
9.25μg/m³
PM10
21.74ppb
O3
1.13ppb
SO2
2.78ppb
NO2
0.15ppm
CO
AQI 22
Good
3.60μg/m³
PM2.5
6.05μg/m³
PM10
19.01ppb
O3
1.40ppb
SO2
2.88ppb
NO2
0.15ppm
CO
AQI 22
Good
3.72μg/m³
PM2.5
7.88μg/m³
PM10
19.28ppb
O3
1.34ppb
SO2
2.87ppb
NO2
0.15ppm
CO
The air quality data for New Hampshire, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Rochester, New Hampshire are available every hour.
Rochester, New Hampshire experienced its worst air quality at 05:00:00, 2026-11-12.
The best air quality in Rochester, New Hampshire was observed at 04:00:00 on 2026-11-12.
The air quality in Rochester, New Hampshire right now is Good, with an AQI of 22.
In Rochester, New Hampshire, PM2.5 is the most frequently found pollutant.
When air quality in Rochester, New Hampshire is compromised, staying indoors and wearing a mask can reduce health risks.
Rochester, New Hampshire currently has a PM2.5 concentration of 3.541 μg/m3.
Rochester, New Hampshire currently has a PM10 concentration of 10.178 μg/m3.
The current carbon monoxide (CO) level in Rochester, New Hampshire is 0.147 ppm.
The current sulfur dioxide (SO2) concentration in Rochester, New Hampshire is 1.1 ppb.
Rochester, New Hampshire currently has an ozone (O3) concentration of 22.274 ppm.
The current level of nitrogen dioxide (NO2) in Rochester, New Hampshire is 2.889 ppb.
All Rights Reserved © Ambee Inc. 2025