ID: 372

AQSQID: 180890022

Site Name: Gary-Iitri

Added: April 21, 2020, 6:24 p.m.

Updated: March 6, 2021, 9:32 a.m.

Location: Gary (Marquette Park/Miller), IN

Reporting: True, Located: True

Current AQI: 27.0

Gary (Marquette Park/Miller) IN, US: 41.6067, -87.3047

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 6, 2021, 9 a.m. N/A N/A N/A 32.0 ppb (31) N/A 1.0 ppb (2) 0.0 ppb (0) N/A 29.0 μg/m3 (27) N/A 31.0
 
March 6, 2021, 8 a.m. N/A N/A N/A 28.0 ppb (27) N/A 1.0 ppb (2) 0.0 ppb (0) N/A 28.0 μg/m3 (26) 11.2 μg/m3 (47) 47.0
 
March 6, 2021, 7 a.m. N/A N/A N/A 26.0 ppb (25) N/A 1.0 ppb (2) 0.0 ppb (0) N/A 27.9 μg/m3 (26) 7.3 μg/m3 (31) 31.0
 
March 6, 2021, 6 a.m. N/A N/A N/A 30.0 ppb (29) N/A 1.0 ppb (2) 0.0 ppb (0) N/A 36.6 μg/m3 (34) 10.6 μg/m3 (45) 45.0
 
March 6, 2021, 5 a.m. N/A N/A N/A 33.0 ppb (32) N/A 1.0 ppb (2) 1.0 ppb (1) N/A 37.1 μg/m3 (35) 10.4 μg/m3 (44) 44.0
 
March 6, 2021, 4 a.m. N/A N/A N/A 30.0 ppb (29) N/A 1.0 ppb (2) 3.0 ppb (3) N/A 31.6 μg/m3 (30) 7.8 μg/m3 (33) 33.0
 
March 6, 2021, 3 a.m. N/A N/A N/A 21.0 ppb (20) N/A 1.0 ppb (2) 14.0 ppb (13) N/A 10.0 μg/m3 (10) 5.6 μg/m3 (24) 24.0
 
March 6, 2021, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 9.3 μg/m3 (9) 4.2 μg/m3 (18) 34.0
 
March 6, 2021, 1 a.m. N/A N/A N/A 0.0 ppb (0) N/A 1.0 ppb (2) 39.0 ppb (37) N/A 11.2 μg/m3 (11) 6.4 μg/m3 (27) 37.0
 
March 6, 2021, midnight N/A N/A N/A 0.0 ppb (0) N/A 1.0 ppb (2) 41.0 ppb (38) N/A 8.6 μg/m3 (8) 5.4 μg/m3 (23) 38.0
 
March 5, 2021, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 11.9 μg/m3 (12) N/A 38.0
 
March 5, 2021, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 14.3 μg/m3 (14) 5.2 μg/m3 (22) 38.0
 
March 5, 2021, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 39.0 ppb (37) N/A 14.1 μg/m3 (14) 6.3 μg/m3 (27) 37.0
 
March 5, 2021, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 14.4 μg/m3 (14) 6.9 μg/m3 (29) 36.0
 
March 5, 2021, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 39.0 ppb (37) N/A 17.6 μg/m3 (17) 5.4 μg/m3 (23) 37.0
 
March 5, 2021, 6 p.m. N/A N/A N/A 7.0 ppb (7) N/A 1.0 ppb (2) 37.0 ppb (35) N/A 28.1 μg/m3 (27) 6.7 μg/m3 (28) 35.0
 
March 5, 2021, 5 p.m. N/A N/A N/A 16.0 ppb (16) N/A 1.0 ppb (2) 28.0 ppb (26) N/A 17.1 μg/m3 (16) 5.5 μg/m3 (23) 26.0
 
March 5, 2021, 4 p.m. N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 8.8 μg/m3 (9) 4.1 μg/m3 (18) 31.0
 
March 5, 2021, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 13.4 μg/m3 (13) 2.3 μg/m3 (10) 38.0
 
March 5, 2021, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 21.5 μg/m3 (20) 7.6 μg/m3 (32) 34.0
 
March 5, 2021, 1 p.m. N/A N/A N/A 26.0 ppb (25) N/A 1.0 ppb (2) 6.0 ppb (6) N/A N/A 13.6 μg/m3 (55) 55.0
 
March 5, 2021, noon N/A N/A N/A 34.0 ppb (33) N/A 1.0 ppb (2) 0.0 ppb (0) N/A 28.5 μg/m3 (27) 6.2 μg/m3 (26) 33.0
 
March 5, 2021, 11 a.m. N/A N/A N/A 27.0 ppb (26) N/A 1.0 ppb (2) 5.0 ppb (5) N/A 14.7 μg/m3 (14) 3.4 μg/m3 (15) 26.0
 
March 5, 2021, 10 a.m. N/A N/A N/A 15.0 ppb (15) N/A 1.0 ppb (2) 23.0 ppb (22) N/A 6.9 μg/m3 (7) 0.8 μg/m3 (4) 22.0
 
March 5, 2021, 9 a.m. N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) 39.0 ppb (37) N/A 4.9 μg/m3 (5) -1.2 μg/m3 (0) 37.0
 
March 5, 2021, 8 a.m. N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) 41.0 ppb (38) N/A 3.7 μg/m3 (4) 0.2 μg/m3 (1) 38.0
 
March 5, 2021, 7 a.m. N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) 41.0 ppb (38) N/A 3.7 μg/m3 (4) 0.8 μg/m3 (4) 38.0
 
March 5, 2021, 6 a.m. N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) 41.0 ppb (38) N/A 4.6 μg/m3 (5) -0.4 μg/m3 (0) 38.0
 
March 5, 2021, 5 a.m. N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 3.9 μg/m3 (4) 0.2 μg/m3 (1) 38.0
 
March 5, 2021, 4 a.m. N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 3.7 μg/m3 (4) 1.2 μg/m3 (5) 38.0
 
March 5, 2021, 3 a.m. N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 4.9 μg/m3 (5) 1.0 μg/m3 (5) 38.0
 
March 5, 2021, 2 a.m. N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 5.3 μg/m3 (5) -0.4 μg/m3 (0) 38.0
 
March 5, 2021, 1 a.m. N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 5.3 μg/m3 (5) 0.3 μg/m3 (2) 38.0
 
March 5, 2021, midnight N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 6.3 μg/m3 (6) 2.3 μg/m3 (10) 38.0
 
March 4, 2021, 11 p.m. N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) N/A N/A 7.6 μg/m3 (8) N/A 8.0
 
March 4, 2021, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 1.0 ppb (2) 39.0 ppb (37) N/A 10.0 μg/m3 (10) 0.7 μg/m3 (3) 37.0
 
March 4, 2021, 9 p.m. N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) 39.0 ppb (37) N/A 10.2 μg/m3 (10) 1.3 μg/m3 (6) 37.0
 
March 4, 2021, 8 p.m. N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) 39.0 ppb (37) N/A 12.8 μg/m3 (12) 2.2 μg/m3 (10) 37.0
 
March 4, 2021, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 39.0 ppb (37) N/A 12.5 μg/m3 (12) 3.4 μg/m3 (15) 37.0
 
March 4, 2021, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 1.0 ppb (2) 39.0 ppb (37) N/A 8.1 μg/m3 (8) 3.6 μg/m3 (16) 37.0
 
March 4, 2021, 5 p.m. N/A N/A N/A 0.0 ppb (0) N/A 1.0 ppb (2) 39.0 ppb (37) N/A 6.9 μg/m3 (7) 1.0 μg/m3 (5) 37.0
 
March 4, 2021, 4 p.m. N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) 39.0 ppb (37) N/A 8.4 μg/m3 (8) 1.5 μg/m3 (7) 37.0
 
March 4, 2021, 3 p.m. N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) 39.0 ppb (37) N/A 7.7 μg/m3 (8) 2.3 μg/m3 (10) 37.0
 
March 4, 2021, 2 p.m. N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 8.4 μg/m3 (8) -0.2 μg/m3 (0) 36.0
 
March 4, 2021, 1 p.m. N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 7.2 μg/m3 (7) 0.5 μg/m3 (3) 36.0
 
March 4, 2021, noon N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 7.9 μg/m3 (8) 3.4 μg/m3 (15) 34.0
 
March 4, 2021, 11 a.m. N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 7.0 μg/m3 (7) 4.2 μg/m3 (18) 34.0
 
March 4, 2021, 10 a.m. N/A N/A N/A -1.0 ppb (0) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 7.2 μg/m3 (7) 3.8 μg/m3 (16) 33.0
 
March 4, 2021, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 34.0 ppb (32) N/A 7.0 μg/m3 (7) 3.8 μg/m3 (16) 32.0
 
March 4, 2021, 8 a.m. N/A N/A N/A 0.0 ppb (0) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 10.8 μg/m3 (10) 3.9 μg/m3 (17) 33.0
 
March 4, 2021, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 16.5 μg/m3 (16) 5.0 μg/m3 (21) 31.0
 
March 4, 2021, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 9.1 μg/m3 (9) 8.5 μg/m3 (36) 36.0
 
March 4, 2021, 5 a.m. N/A N/A N/A 0.0 ppb (0) N/A 1.0 ppb (2) 37.0 ppb (35) N/A 8.9 μg/m3 (9) 11.0 μg/m3 (46) 46.0
 
March 4, 2021, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 9.4 μg/m3 (9) 11.3 μg/m3 (48) 48.0
 
March 4, 2021, 3 a.m. N/A N/A N/A 0.0 ppb (0) N/A N/A 37.0 ppb (35) N/A 9.9 μg/m3 (10) 9.3 μg/m3 (39) 39.0
 
March 4, 2021, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 27.3 μg/m3 (26) 15.9 μg/m3 (59) 59.0
 
March 4, 2021, 1 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 15.5 μg/m3 (15) 14.8 μg/m3 (57) 57.0
 
March 4, 2021, midnight N/A N/A N/A 9.0 ppb (9) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 18.9 μg/m3 (18) 13.7 μg/m3 (55) 55.0
 
March 3, 2021, 11 p.m. N/A N/A N/A 14.0 ppb (14) N/A 1.0 ppb (2) 32.0 ppb (30) N/A 24.6 μg/m3 (23) N/A 30.0
 
March 3, 2021, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 16.8 μg/m3 (16) 13.2 μg/m3 (54) 54.0
 
March 3, 2021, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 43.0 ppb (40) N/A 15.5 μg/m3 (15) 10.8 μg/m3 (46) 46.0
 
March 3, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 43.0 ppb (40) N/A 16.5 μg/m3 (16) 10.7 μg/m3 (45) 45.0
 
March 3, 2021, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 19.4 μg/m3 (18) 9.2 μg/m3 (39) 39.0
 
March 3, 2021, 6 p.m. N/A N/A N/A 7.0 ppb (7) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 23.0 μg/m3 (22) 11.4 μg/m3 (48) 48.0
 
March 3, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 13.2 μg/m3 (54) 54.0
 
March 3, 2021, 4 p.m. N/A N/A N/A 10.0 ppb (10) N/A 7.0 ppb (10) 29.0 ppb (27) N/A 51.9 μg/m3 (49) N/A 49.0
 
March 3, 2021, 3 p.m. N/A N/A N/A 17.0 ppb (17) N/A 41.0 ppb (58) 21.0 ppb (20) N/A 84.0 μg/m3 (66) 30.8 μg/m3 (91) 91.0
 
March 3, 2021, 2 p.m. N/A N/A N/A 12.0 ppb (12) N/A 1.0 ppb (2) 19.0 ppb (18) N/A 28.1 μg/m3 (27) 10.0 μg/m3 (42) 42.0
 
March 3, 2021, 1 p.m. N/A N/A N/A 13.0 ppb (13) N/A 1.0 ppb (2) 15.0 ppb (14) N/A 19.0 μg/m3 (18) 8.7 μg/m3 (37) 37.0
 
March 3, 2021, noon N/A N/A N/A 17.0 ppb (17) N/A 1.0 ppb (2) 11.0 ppb (11) N/A 15.9 μg/m3 (15) 8.8 μg/m3 (37) 37.0
 
March 3, 2021, 11 a.m. N/A N/A N/A 13.0 ppb (13) N/A 1.0 ppb (2) 16.0 ppb (15) N/A 12.5 μg/m3 (12) 9.3 μg/m3 (39) 39.0
 
March 3, 2021, 10 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 24.0 ppb (23) N/A 9.2 μg/m3 (9) 6.7 μg/m3 (28) 28.0
 
March 3, 2021, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 26.0 ppb (25) N/A 9.0 μg/m3 (9) 6.3 μg/m3 (27) 27.0
 
March 3, 2021, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 28.0 ppb (26) N/A 8.2 μg/m3 (8) 7.0 μg/m3 (30) 30.0
 
March 3, 2021, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 29.0 ppb (27) N/A 8.4 μg/m3 (8) 6.7 μg/m3 (28) 28.0
 
March 3, 2021, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 30.0 ppb (28) N/A 9.5 μg/m3 (9) 7.1 μg/m3 (30) 30.0
 
March 3, 2021, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 9.4 μg/m3 (9) 7.4 μg/m3 (31) 31.0
 
March 3, 2021, 4 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 29.0 ppb (27) N/A 8.8 μg/m3 (9) 7.8 μg/m3 (33) 33.0
 
March 3, 2021, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 30.0 ppb (28) N/A 10.1 μg/m3 (10) 9.9 μg/m3 (42) 42.0
 
March 3, 2021, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 30.0 ppb (28) N/A 11.2 μg/m3 (11) 13.6 μg/m3 (55) 55.0
 
March 3, 2021, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 30.0 ppb (28) N/A 10.9 μg/m3 (11) 11.0 μg/m3 (46) 46.0
 
March 3, 2021, midnight N/A N/A N/A 10.0 ppb (10) N/A 1.0 ppb (2) 27.0 ppb (25) N/A 13.6 μg/m3 (13) 8.2 μg/m3 (35) 35.0
 
March 2, 2021, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 32.0 ppb (30) N/A 12.9 μg/m3 (12) N/A 30.0
 
March 2, 2021, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 37.0 ppb (35) N/A 12.8 μg/m3 (12) 4.9 μg/m3 (21) 35.0
 
March 2, 2021, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 37.0 ppb (35) N/A 14.2 μg/m3 (14) 3.9 μg/m3 (17) 35.0
 
March 2, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 17.7 μg/m3 (17) 4.5 μg/m3 (19) 36.0
 
March 2, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 18.9 μg/m3 (18) 4.4 μg/m3 (19) 36.0
 
March 2, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.9 μg/m3 (21) 21.0
 
March 2, 2021, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 37.0 ppb (35) N/A 34.9 μg/m3 (33) N/A 35.0
 
March 2, 2021, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 35.0 ppb (33) N/A 36.4 μg/m3 (34) 4.8 μg/m3 (20) 34.0
 
March 2, 2021, 3 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 34.0 ppb (32) N/A 24.9 μg/m3 (24) 5.1 μg/m3 (22) 32.0
 
March 2, 2021, 2 p.m. N/A N/A N/A 9.0 ppb (9) N/A 1.0 ppb (2) 28.0 ppb (26) N/A 16.6 μg/m3 (16) 10.0 μg/m3 (42) 42.0
 
March 2, 2021, 1 p.m. N/A N/A N/A 17.0 ppb (17) N/A 1.0 ppb (2) 14.0 ppb (13) N/A 24.4 μg/m3 (23) 13.5 μg/m3 (54) 54.0
 
March 2, 2021, noon N/A N/A N/A 29.0 ppb (28) N/A 1.0 ppb (2) 0.0 ppb (0) N/A 36.1 μg/m3 (34) 12.9 μg/m3 (53) 53.0
 
March 2, 2021, 11 a.m. N/A N/A N/A 30.0 ppb (29) N/A 1.0 ppb (2) 0.0 ppb (0) N/A 35.2 μg/m3 (33) 13.0 μg/m3 (53) 53.0
 
March 2, 2021, 10 a.m. N/A N/A N/A 31.0 ppb (30) N/A 1.0 ppb (2) 0.0 ppb (0) N/A 29.8 μg/m3 (28) 12.4 μg/m3 (52) 52.0
 
March 2, 2021, 9 a.m. N/A N/A N/A 33.0 ppb (32) N/A 1.0 ppb (2) 0.0 ppb (0) N/A 32.8 μg/m3 (31) 9.8 μg/m3 (41) 41.0
 
March 2, 2021, 8 a.m. N/A N/A N/A 31.0 ppb (30) N/A 1.0 ppb (2) 0.0 ppb (0) N/A 22.9 μg/m3 (22) 10.7 μg/m3 (45) 45.0
 
March 2, 2021, 7 a.m. N/A N/A N/A 34.0 ppb (33) N/A 1.0 ppb (2) 0.0 ppb (0) N/A 26.7 μg/m3 (25) 8.6 μg/m3 (36) 36.0
 
March 2, 2021, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 26.0 ppb (25) N/A 12.0 μg/m3 (12) 3.2 μg/m3 (14) 25.0
 
March 2, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.4 μg/m3 (19) 19.0
 
March 2, 2021, 4 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 9.0 μg/m3 (9) N/A 38.0
 
March 2, 2021, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 13.6 μg/m3 (13) 6.1 μg/m3 (26) 36.0
 
March 2, 2021, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 10.8 μg/m3 (10) 3.3 μg/m3 (14) 38.0
 
March 2, 2021, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 41.0 ppb (38) N/A 12.0 μg/m3 (12) 3.8 μg/m3 (16) 38.0
 
March 2, 2021, midnight N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 42.0 ppb (39) N/A 7.1 μg/m3 (7) 5.3 μg/m3 (23) 39.0
 
March 1, 2021, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A 1.0 ppb (2) 43.0 ppb (40) N/A 9.0 μg/m3 (9) N/A 40.0
 
March 1, 2021, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 1.0 ppb (2) 43.0 ppb (40) N/A 7.8 μg/m3 (8) 4.3 μg/m3 (18) 40.0
 
March 1, 2021, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A 1.0 ppb (2) 42.0 ppb (39) N/A 7.8 μg/m3 (8) 0.3 μg/m3 (2) 39.0
 
March 1, 2021, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 41.0 ppb (38) N/A 7.3 μg/m3 (7) 0.1 μg/m3 (1) 38.0
 
March 1, 2021, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 40.0 ppb (38) N/A 8.9 μg/m3 (9) 2.0 μg/m3 (9) 38.0
 
March 1, 2021, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 14.9 μg/m3 (14) 4.4 μg/m3 (19) 36.0
 
March 1, 2021, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 15.9 μg/m3 (15) 5.3 μg/m3 (23) 34.0
 
March 1, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 34.0 ppb (32) N/A 15.2 μg/m3 (15) 5.9 μg/m3 (25) 32.0
 
March 1, 2021, 3 p.m. N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) 27.0 ppb (25) N/A 23.6 μg/m3 (22) 5.2 μg/m3 (22) 25.0
 
March 1, 2021, 2 p.m. N/A N/A N/A 16.0 ppb (16) N/A 5.0 ppb (8) 19.0 ppb (18) N/A 38.9 μg/m3 (37) 18.7 μg/m3 (65) 65.0
 
March 1, 2021, 1 p.m. N/A N/A N/A 22.0 ppb (21) N/A 2.0 ppb (3) 13.0 ppb (13) N/A 23.1 μg/m3 (22) 10.2 μg/m3 (43) 43.0
 
March 1, 2021, noon N/A N/A N/A 27.0 ppb (26) N/A 6.0 ppb (9) 6.0 ppb (6) N/A 41.0 μg/m3 (38) 13.7 μg/m3 (55) 55.0
 
March 1, 2021, 11 a.m. N/A N/A N/A 16.0 ppb (16) N/A 10.0 ppb (15) 15.0 ppb (14) N/A 42.1 μg/m3 (39) 20.5 μg/m3 (69) 69.0
 
March 1, 2021, 10 a.m. N/A N/A N/A 14.0 ppb (14) N/A 6.0 ppb (9) 17.0 ppb (16) N/A 39.7 μg/m3 (37) 17.3 μg/m3 (62) 62.0
 
March 1, 2021, 9 a.m. N/A N/A N/A 8.0 ppb (8) N/A 5.0 ppb (8) 23.0 ppb (22) N/A 18.5 μg/m3 (18) 11.5 μg/m3 (48) 48.0
 
March 1, 2021, 8 a.m. N/A N/A N/A 19.0 ppb (18) N/A 18.0 ppb (26) 12.0 ppb (12) N/A 79.8 μg/m3 (64) 22.5 μg/m3 (73) 73.0
 
March 1, 2021, 7 a.m. N/A N/A N/A 24.0 ppb (23) N/A 23.0 ppb (33) 9.0 ppb (9) N/A 80.8 μg/m3 (64) 25.6 μg/m3 (80) 80.0
 
March 1, 2021, 6 a.m. N/A N/A N/A N/A N/A 25.0 ppb (36) 9.0 ppb (9) N/A 83.5 μg/m3 (66) 23.0 μg/m3 (74) 74.0
 
March 1, 2021, 5 a.m. N/A N/A N/A 26.0 ppb (25) N/A 31.0 ppb (45) 9.0 ppb (9) N/A 82.4 μg/m3 (65) 30.1 μg/m3 (89) 89.0
 
March 1, 2021, 4 a.m. N/A N/A N/A 25.0 ppb (24) N/A 23.0 ppb (33) 11.0 ppb (11) N/A 69.5 μg/m3 (59) 23.1 μg/m3 (75) 75.0
 
March 1, 2021, 3 a.m. N/A N/A N/A 23.0 ppb (22) N/A N/A 13.0 ppb (13) N/A 93.2 μg/m3 (70) 28.5 μg/m3 (86) 86.0
 
March 1, 2021, 2 a.m. N/A N/A N/A 25.0 ppb (24) N/A 20.0 ppb (29) 12.0 ppb (12) N/A 97.0 μg/m3 (72) 31.9 μg/m3 (93) 93.0
 
March 1, 2021, 1 a.m. N/A N/A N/A 23.0 ppb (22) N/A 11.0 ppb (16) 15.0 ppb (14) N/A 57.3 μg/m3 (53) 27.0 μg/m3 (83) 83.0
 
March 1, 2021, midnight N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 13.2 μg/m3 (13) 13.1 μg/m3 (54) 54.0
 
Feb. 28, 2021, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 36.0 ppb (34) N/A 15.6 μg/m3 (15) N/A 34.0
 
Feb. 28, 2021, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 15.7 μg/m3 (15) 14.0 μg/m3 (55) 55.0
 
Feb. 28, 2021, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 26.0 ppb (25) N/A 13.1 μg/m3 (13) 7.8 μg/m3 (33) 33.0
 
Feb. 28, 2021, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 20.0 ppb (19) N/A 10.6 μg/m3 (10) 5.4 μg/m3 (23) 23.0
 
Feb. 28, 2021, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 19.0 ppb (18) N/A 6.2 μg/m3 (6) 3.1 μg/m3 (13) 18.0
 
Feb. 28, 2021, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 19.0 ppb (18) N/A 1.5 μg/m3 (2) 0.4 μg/m3 (2) 18.0
 
Feb. 28, 2021, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 18.0 ppb (17) N/A 2.0 μg/m3 (2) -0.7 μg/m3 (0) 17.0
 
Feb. 28, 2021, 4 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 15.0 ppb (14) N/A 6.4 μg/m3 (6) 4.5 μg/m3 (19) 19.0
 
Feb. 28, 2021, 3 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 15.0 ppb (14) N/A 8.2 μg/m3 (8) 8.0 μg/m3 (34) 34.0
 
Feb. 28, 2021, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 16.0 ppb (15) N/A 7.6 μg/m3 (8) 11.4 μg/m3 (48) 48.0
 
Feb. 28, 2021, 1 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 16.0 ppb (15) N/A 9.2 μg/m3 (9) 12.6 μg/m3 (53) 53.0
 
Feb. 28, 2021, noon N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 20.0 ppb (19) N/A 7.4 μg/m3 (7) 10.9 μg/m3 (46) 46.0
 
Feb. 28, 2021, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) N/A N/A 8.0 μg/m3 (8) 11.1 μg/m3 (47) 47.0
 
Feb. 28, 2021, 10 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) N/A N/A 10.7 μg/m3 (10) 10.7 μg/m3 (45) 45.0
 
Feb. 28, 2021, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 27.0 ppb (25) N/A 9.6 μg/m3 (9) 8.7 μg/m3 (37) 37.0
 
Feb. 28, 2021, 8 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 26.0 ppb (25) N/A 7.7 μg/m3 (8) 12.9 μg/m3 (53) 53.0
 
Feb. 28, 2021, 7 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 28.0 ppb (26) N/A 10.6 μg/m3 (10) 14.4 μg/m3 (56) 56.0
 
Feb. 28, 2021, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 31.0 ppb (29) N/A 11.5 μg/m3 (11) 13.8 μg/m3 (55) 55.0
 
Feb. 28, 2021, 5 a.m. N/A N/A N/A 9.0 ppb (9) N/A 1.0 ppb (2) 26.0 ppb (25) N/A 10.1 μg/m3 (10) 12.8 μg/m3 (53) 53.0
 
Feb. 28, 2021, 4 a.m. N/A N/A N/A 10.0 ppb (10) N/A 1.0 ppb (2) 25.0 ppb (24) N/A 13.9 μg/m3 (13) 14.0 μg/m3 (55) 55.0
 
Feb. 28, 2021, 3 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 30.0 ppb (28) N/A 14.8 μg/m3 (14) 15.5 μg/m3 (59) 59.0
 
Feb. 28, 2021, 2 a.m. N/A N/A N/A 9.0 ppb (9) N/A 1.0 ppb (2) 28.0 ppb (26) N/A 14.5 μg/m3 (14) 15.5 μg/m3 (59) 59.0
 
Feb. 28, 2021, 1 a.m. N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) 26.0 ppb (25) N/A 15.2 μg/m3 (15) 15.6 μg/m3 (59) 59.0
 
Feb. 28, 2021, midnight N/A N/A N/A 10.0 ppb (10) N/A 1.0 ppb (2) 25.0 ppb (24) N/A 18.6 μg/m3 (18) 12.5 μg/m3 (52) 52.0
 
Feb. 27, 2021, 11 p.m. N/A N/A N/A 11.0 ppb (11) N/A 1.0 ppb (2) 27.0 ppb (25) N/A 18.6 μg/m3 (18) N/A 25.0
 
Feb. 27, 2021, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 17.1 μg/m3 (16) 9.5 μg/m3 (40) 40.0
 
Feb. 27, 2021, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 39.0 ppb (37) N/A 17.0 μg/m3 (16) 13.7 μg/m3 (55) 55.0
 
Feb. 27, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 44.0 ppb (41) N/A 20.1 μg/m3 (19) 9.2 μg/m3 (39) 41.0
 
Feb. 27, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 42.0 ppb (39) N/A 17.2 μg/m3 (16) 8.8 μg/m3 (37) 39.0
 
Feb. 27, 2021, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 37.0 ppb (35) N/A 15.2 μg/m3 (15) 10.1 μg/m3 (43) 43.0
 
Feb. 27, 2021, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 33.0 ppb (31) N/A 13.6 μg/m3 (13) 12.8 μg/m3 (53) 53.0
 
Feb. 27, 2021, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 29.0 ppb (27) N/A 15.1 μg/m3 (14) 7.1 μg/m3 (30) 30.0
 
Feb. 27, 2021, 3 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 22.0 ppb (21) N/A 12.2 μg/m3 (12) 11.3 μg/m3 (48) 48.0
 
Feb. 27, 2021, 2 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 19.0 ppb (18) N/A 11.0 μg/m3 (11) 8.6 μg/m3 (36) 36.0
 
Feb. 27, 2021, 1 p.m. N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) 17.0 ppb (16) N/A 7.2 μg/m3 (7) 9.0 μg/m3 (38) 38.0
 
Feb. 27, 2021, noon N/A N/A N/A 9.0 ppb (9) N/A 1.0 ppb (2) 17.0 ppb (16) N/A 7.6 μg/m3 (8) 12.1 μg/m3 (51) 51.0
 
Feb. 27, 2021, 11 a.m. N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) 19.0 ppb (18) N/A 9.0 μg/m3 (9) 7.6 μg/m3 (32) 32.0
 
Feb. 27, 2021, 10 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 20.0 ppb (19) N/A 11.4 μg/m3 (11) 10.7 μg/m3 (45) 45.0