con2aqi
Calculate the AQI from Pollutant Concentration
Description
To calculate the AQI (Air Quality Index) from pollutant concentration data. O3, PM2.5, PM10, CO, SO2, and NO2 are available currently. The method can be referenced at Environmental Protection Agency, United States as follows: EPA (2016) <https://www3.epa.gov/airnow/aqi-technical-assistance-document-may2016.pdf>.
Downloads
179
Last 30 days
23508th
512
Last 90 days
2.3K
Last year
Trend: +34.6% (30d vs prior 30d)
0
Last 30 days
25
Last 90 days
101
Last year
Trend: -100% (30d vs prior 30d)
2
Last 7 days
9
Last 30 days
0
All-time
autoCRAN-only: this name is served only by autoCRAN, so the count is exact.
CRAN Check Status
Show all 13 flavors
| Flavor | Status |
|---|---|
| r-devel-linux-x86_64-debian-clang | NOTE |
| r-devel-linux-x86_64-debian-gcc | NOTE |
| r-devel-linux-x86_64-fedora-clang | OK |
| r-devel-linux-x86_64-fedora-gcc | OK |
| r-devel-windows-x86_64 | OK |
| r-oldrel-macos-arm64 | OK |
| r-oldrel-macos-x86_64 | OK |
| r-oldrel-windows-x86_64 | OK |
| r-patched-linux-x86_64 | OK |
| r-release-linux-x86_64 | OK |
| r-release-macos-arm64 | OK |
| r-release-macos-x86_64 | OK |
| r-release-windows-x86_64 | OK |
Check details (2 non-OK)
CRAN incoming feasibility
Maintainer: ‘Zhicheng Du <dgdzc@hotmail.com>’
No Authors@R field in DESCRIPTION.
Please add one, modifying
Authors@R: c(person(given = "Zhicheng",
family = "Du",
role = c("aut", "cre"),
email = "dgdzc@hotmail.com"),
person(given = "Ziqiang",
family = "Lin",
role = "aut"),
person(given = "Yuantao",
family = "Hao",
role = "aut"))
as necessary.
CRAN incoming feasibility
Maintainer: ‘Zhicheng Du <dgdzc@hotmail.com>’
No Authors@R field in DESCRIPTION.
Please add one, modifying
Authors@R: c(person(given = "Zhicheng",
family = "Du",
role = c("aut", "cre"),
email = "dgdzc@hotmail.com"),
person(given = "Ziqiang",
family = "Lin",
role = "aut"),
person(given = "Yuantao",
family = "Hao",
role = "aut"))
as necessary.
Check History
NOTE 9 OK · 5 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026
CRAN incoming feasibility
Maintainer: ‘Zhicheng Du <dgdzc@hotmail.com>’
No Authors@R field in DESCRIPTION.
Please add one, modifying
Authors@R: c(person(given = "Zhicheng",
family = "Du",
role = c("aut", "cre"),
...[truncated]...
m"),
person(given = "Ziqiang",
family = "Lin",
role = "aut"),
person(given = "Yuantao",
family = "Hao",
role = "aut"))
as necessary.
CRAN incoming feasibility
Maintainer: ‘Zhicheng Du <dgdzc@hotmail.com>’
No Authors@R field in DESCRIPTION.
Please add one, modifying
Authors@R: c(person(given = "Zhicheng",
family = "Du",
role = c("aut", "cre"),
...[truncated]...
m"),
person(given = "Ziqiang",
family = "Lin",
role = "aut"),
person(given = "Yuantao",
family = "Hao",
role = "aut"))
as necessary.
LazyData
'LazyData' is specified without a 'data' directory
LazyData
'LazyData' is specified without a 'data' directory
LazyData
'LazyData' is specified without a 'data' directory
Code
Structure
Lines of code
132
Files
5
Compiled share
0%
Has compiled src
No
Language breakdown
API
Exported functions
1
Internal functions
0
Recent export changes
Testing & CI
Has tests
No
Test-to-code ratio
0.00
testthat edition
–
CI present
No
CI type
[]
PR gated
No
Docs
Return-value doc rate
–
\dontrun example ratio
0%
Roxygen coverage
–
Has pkgdown
No
NEWS present
No
Health & Security signals
Informational signals; not verdicts.
on.exit coverage
–
Unsafe pattern score
0
Dep constraint coverage
0%
Secret pattern count
0
Bundled 3rd-party code
2 items
Portability & License
Min R version
–
System requirements
–
C++ standard
–
License
GPL-3
License flags
SPDX valid, OSI approved
History
Versions
1
First release
2018-08-20
Latest release
2018-08-20
Avg cadence
–
Cold removal rate
–
Dep drift
0
Per-file churn detail lives in the source pipeline: https://github.com/r-observatory/cran-code-metrics.
Version History
1 trackedR Observatory began tracking this package on Mar 10, 2026; it first appeared on CRAN Aug 20, 2018. Releases before tracking aren’t shown.