Historical Air Quality
Product type
Dataset
Update frequency
Annually
Updated
May 15, 2023
Delivery method
Download
Metadata is available for each file version of the dataset. A JSON file can be downloaded once you subscribe to the dataset. The information below is an example of the metadata included in each JSON file.
Dataset file name: annual_aqi_by_cbsa_2003.zip
Key Statistics
Total records
568
Missing values
1%
Duplicate rows
0%
Columns
Columns
19
Categorical
0
Numeric
18
Date/time
0
Correlations Correlations are columns within the dataset that have a linear dependency on each other and can be dropped or filtered out when creating models
Correlations
7
Correlated columns
Moderate Days and Unhealthy for Sensitive Groups Days, 90th Percentile AQI and Moderate Days, 90th Percentile AQI and Median AQI, Median AQI and Moderate Days, 90th Percentile AQI and Unhealthy for Sensitive Groups Days, Max AQI and Unhealthy for Sensitive Groups Days, Max AQI and Unhealthy Days
Column name | Type | Unique values | Min value | Max value |
|---|---|---|---|---|
CBSA Code | numeric | 568 | 10100 | 49740 |
Good Days | numeric | 275 | 2 | 360 |
Moderate Days | numeric | 199 | 0 | 271 |
Unhealthy for Sensitive Groups Days | numeric | 79 | 0 | 189 |
Unhealthy Days | numeric | 31 | 0 | 98 |
Very Unhealthy Days | numeric | 11 | 0 | 51 |
Hazardous Days | numeric | 5 | 0 | 18 |
Max AQI | numeric | 173 | 6 | 16515 |
90th Percentile AQI | numeric | 111 | 6 | 209 |
Days with AQI | numeric | 153 | 2 | 365 |
Median AQI | numeric | 82 | 0 | 118 |
Days CO | numeric | 48 | 0 | 198 |
Days Ozone | numeric | 213 | 0 | 365 |
Days SO2 | numeric | 118 | 0 | 365 |
Days PM2.5 | numeric | 190 | 0 | 365 |
Days NO2 | numeric | 80 | 0 | 183 |
Year | numeric | 1 | 2003 | 2003 |
Days PM10 | numeric | 99 | 0 | 365 |
CBSA | text | 568 | 8 | 46 |