--- Environment Canada signature Canada Wordmark
Skip first menu
  Français Contact Us Help Search Canada Site
What's New
About Us
Topics Publications Weather Home
Greenhouse Gas EmissionsCriteria Air ContaminantsNPRI
---
AP Home
Consensus Forecasts
Projections and Analysis
 CAPE Home > Urban Air Quality Trends > Data Summary



Air Quality Trends - Data Summary

Year TSP CO 8H SO2 NO2 O3 1H Lead
1974 112 47 56 (*) (*) 100
1975 94 43 47 N/A (*) 81
1976 94 34 52 N/A (*) 72
1977 88 34 47 58 (*) 68
1978 88 32 43 55 (*) 62
1979 94 35 43 49 109 57
1980 96 32 39 47 105 50
1981 84 35 35 43 102 47
1982 74 32 35 43 99 40
1983 66 27 30 45 98 34
1985 61 26 26 42 93 26
1986 61 26 26 42 90 24
1987 68 24 22 40 90 15
1988 62 22 26 40 113 9
1989 62 21 27 42 98 7
1990 63 19 27 39 90 3
1991 55 18 20 38 86 3
1992 50 15 22 34 73 3

(*) Not monitored


---

| What's New | About Us | Topics | Publications | Weather | Home |
| Français | Contact Us | Help | Search | Canada Site |
The Green LaneTM, Environment Canada's World Wide Web site
Last updated: 2014-10-23
Last reviewed: 2014-10-23
Important Notices