Stay updated with real-time air quality in Norwalk, Ohio 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)
52
Moderate
Norwalk, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.50 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
32.35 μg/m³
0
55
155
255
425
605+
21.46 ppb
0
55
71
86
201
201+
0.66 ppb
0
36
76
186
605
1005+
8.11 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Norwalk, Ohio
Scroll To Air Quality MapLoading...
AQI 54
Moderate
10.79μg/m³
PM2.5
48.07μg/m³
PM10
25.74ppb
O3
0.70ppb
SO2
4.60ppb
NO2
0.17ppm
CO
AQI 49
Good
9.17μg/m³
PM2.5
33.42μg/m³
PM10
20.72ppb
O3
0.62ppb
SO2
6.91ppb
NO2
0.25ppm
CO
AQI 49
Good
9.19μg/m³
PM2.5
32.40μg/m³
PM10
22.44ppb
O3
0.79ppb
SO2
6.95ppb
NO2
0.27ppm
CO
AQI 52
Moderate
9.73μg/m³
PM2.5
32.52μg/m³
PM10
17.70ppb
O3
0.76ppb
SO2
7.38ppb
NO2
0.29ppm
CO
AQI 38
Good
6.89μg/m³
PM2.5
20.74μg/m³
PM10
22.07ppb
O3
0.76ppb
SO2
8.60ppb
NO2
0.20ppm
CO
AQI 52
Moderate
9.76μg/m³
PM2.5
32.54μg/m³
PM10
17.35ppb
O3
0.77ppb
SO2
7.23ppb
NO2
0.29ppm
CO
Air quality data and pollutant measurements for Ohio, 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 Norwalk, Ohio is updated every hour.
The worst air quality in Norwalk, Ohio in the last 24 hours was observed at 03:00:00 on 2026-06-08.
In the last 24 hrs, the best air quality in Norwalk, Ohio was observed at 01:00:00 on 2026-06-07.
The current air quality in Norwalk, Ohio is 52, categorized as Moderate based on real-time data.
The most common pollutant in Norwalk, Ohio is PM2.5.
If the air quality in Norwalk, Ohio is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Norwalk, Ohio is 9.501 μg/m3.
The current PM10 concentration at Norwalk, Ohio is 32.355 μg/m3.
The current carbon monoxide (CO) concentration at Norwalk, Ohio is 0.212 ppm.
The current sulfur dioxide (SO2) concentration at Norwalk, Ohio is 0.662 ppb.
The current ozone (O3) concentration at Norwalk, Ohio is 21.463 ppm.
The current nitrogen dioxide (NO2) concentration at Norwalk, Ohio is 8.105 ppb.
All Rights Reserved © Ambee Inc. 2025